|
- /*
- * Copyright (c) 2003 Fabrice Bellard
- *
- * This file is part of FFmpeg.
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
- /**
- * @file
- * simple media player based on the FFmpeg libraries
- */
-
- #include "config.h"
- #include <inttypes.h>
- #include <math.h>
- #include <limits.h>
- #include <signal.h>
- #include <stdint.h>
-
- #include "libavutil/avstring.h"
- #include "libavutil/eval.h"
- #include "libavutil/mathematics.h"
- #include "libavutil/pixdesc.h"
- #include "libavutil/imgutils.h"
- #include "libavutil/dict.h"
- #include "libavutil/fifo.h"
- #include "libavutil/parseutils.h"
- #include "libavutil/samplefmt.h"
- #include "libavutil/avassert.h"
- #include "libavutil/time.h"
- #include "libavutil/bprint.h"
- #include "libavformat/avformat.h"
- #include "libavdevice/avdevice.h"
- #include "libswscale/swscale.h"
- #include "libavutil/opt.h"
- #include "libavcodec/avfft.h"
- #include "libswresample/swresample.h"
-
- #if CONFIG_AVFILTER
- # include "libavfilter/avfilter.h"
- # include "libavfilter/buffersink.h"
- # include "libavfilter/buffersrc.h"
- #endif
-
- #include <SDL.h>
- #include <SDL_thread.h>
-
- #include "cmdutils.h"
-
- #include <assert.h>
-
- const char program_name[] = "ffplay";
- const int program_birth_year = 2003;
-
- #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
- #define MIN_FRAMES 25
- #define EXTERNAL_CLOCK_MIN_FRAMES 2
- #define EXTERNAL_CLOCK_MAX_FRAMES 10
-
- /* Minimum SDL audio buffer size, in samples. */
- #define SDL_AUDIO_MIN_BUFFER_SIZE 512
- /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
- #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
-
- /* Step size for volume control in dB */
- #define SDL_VOLUME_STEP (0.75)
-
- /* no AV sync correction is done if below the minimum AV sync threshold */
- #define AV_SYNC_THRESHOLD_MIN 0.04
- /* AV sync correction is done if above the maximum AV sync threshold */
- #define AV_SYNC_THRESHOLD_MAX 0.1
- /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
- #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
- /* no AV correction is done if too big error */
- #define AV_NOSYNC_THRESHOLD 10.0
-
- /* maximum audio speed change to get correct sync */
- #define SAMPLE_CORRECTION_PERCENT_MAX 10
-
- /* external clock speed adjustment constants for realtime sources based on buffer fullness */
- #define EXTERNAL_CLOCK_SPEED_MIN 0.900
- #define EXTERNAL_CLOCK_SPEED_MAX 1.010
- #define EXTERNAL_CLOCK_SPEED_STEP 0.001
-
- /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
- #define AUDIO_DIFF_AVG_NB 20
-
- /* polls for possible required screen refresh at least this often, should be less than 1/fps */
- #define REFRESH_RATE 0.01
-
- /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
- /* TODO: We assume that a decoded and resampled frame fits into this buffer */
- #define SAMPLE_ARRAY_SIZE (8 * 65536)
-
- #define CURSOR_HIDE_DELAY 1000000
-
- #define USE_ONEPASS_SUBTITLE_RENDER 1
-
- static unsigned sws_flags = SWS_BICUBIC;
-
- typedef struct MyAVPacketList {
- AVPacket *pkt;
- int serial;
- } MyAVPacketList;
-
- typedef struct PacketQueue {
- AVFifoBuffer *pkt_list;
- int nb_packets;
- int size;
- int64_t duration;
- int abort_request;
- int serial;
- SDL_mutex *mutex;
- SDL_cond *cond;
- } PacketQueue;
-
- #define VIDEO_PICTURE_QUEUE_SIZE 3
- #define SUBPICTURE_QUEUE_SIZE 16
- #define SAMPLE_QUEUE_SIZE 9
- #define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
-
- typedef struct AudioParams {
- int freq;
- int channels;
- int64_t channel_layout;
- enum AVSampleFormat fmt;
- int frame_size;
- int bytes_per_sec;
- } AudioParams;
-
- typedef struct Clock {
- double pts; /* clock base */
- double pts_drift; /* clock base minus time at which we updated the clock */
- double last_updated;
- double speed;
- int serial; /* clock is based on a packet with this serial */
- int paused;
- int *queue_serial; /* pointer to the current packet queue serial, used for obsolete clock detection */
- } Clock;
-
- /* Common struct for handling all types of decoded data and allocated render buffers. */
- typedef struct Frame {
- AVFrame *frame;
- AVSubtitle sub;
- int serial;
- double pts; /* presentation timestamp for the frame */
- double duration; /* estimated duration of the frame */
- int64_t pos; /* byte position of the frame in the input file */
- int width;
- int height;
- int format;
- AVRational sar;
- int uploaded;
- int flip_v;
- } Frame;
-
- typedef struct FrameQueue {
- Frame queue[FRAME_QUEUE_SIZE];
- int rindex;
- int windex;
- int size;
- int max_size;
- int keep_last;
- int rindex_shown;
- SDL_mutex *mutex;
- SDL_cond *cond;
- PacketQueue *pktq;
- } FrameQueue;
-
- enum {
- AV_SYNC_AUDIO_MASTER, /* default choice */
- AV_SYNC_VIDEO_MASTER,
- AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
- };
-
- typedef struct Decoder {
- AVPacket *pkt;
- PacketQueue *queue;
- AVCodecContext *avctx;
- int pkt_serial;
- int finished;
- int packet_pending;
- SDL_cond *empty_queue_cond;
- int64_t start_pts;
- AVRational start_pts_tb;
- int64_t next_pts;
- AVRational next_pts_tb;
- SDL_Thread *decoder_tid;
- } Decoder;
-
- typedef struct VideoState {
- SDL_Thread *read_tid;
- AVInputFormat *iformat;
- int abort_request;
- int force_refresh;
- int paused;
- int last_paused;
- int queue_attachments_req;
- int seek_req;
- int seek_flags;
- int64_t seek_pos;
- int64_t seek_rel;
- int read_pause_return;
- AVFormatContext *ic;
- int realtime;
-
- Clock audclk;
- Clock vidclk;
- Clock extclk;
-
- FrameQueue pictq;
- FrameQueue subpq;
- FrameQueue sampq;
-
- Decoder auddec;
- Decoder viddec;
- Decoder subdec;
-
- int audio_stream;
-
- int av_sync_type;
-
- double audio_clock;
- int audio_clock_serial;
- double audio_diff_cum; /* used for AV difference average computation */
- double audio_diff_avg_coef;
- double audio_diff_threshold;
- int audio_diff_avg_count;
- AVStream *audio_st;
- PacketQueue audioq;
- int audio_hw_buf_size;
- uint8_t *audio_buf;
- uint8_t *audio_buf1;
- unsigned int audio_buf_size; /* in bytes */
- unsigned int audio_buf1_size;
- int audio_buf_index; /* in bytes */
- int audio_write_buf_size;
- int audio_volume;
- int muted;
- struct AudioParams audio_src;
- #if CONFIG_AVFILTER
- struct AudioParams audio_filter_src;
- #endif
- struct AudioParams audio_tgt;
- struct SwrContext *swr_ctx;
- int frame_drops_early;
- int frame_drops_late;
-
- enum ShowMode {
- SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
- } show_mode;
- int16_t sample_array[SAMPLE_ARRAY_SIZE];
- int sample_array_index;
- int last_i_start;
- RDFTContext *rdft;
- int rdft_bits;
- FFTSample *rdft_data;
- int xpos;
- double last_vis_time;
- SDL_Texture *vis_texture;
- SDL_Texture *sub_texture;
- SDL_Texture *vid_texture;
-
- int subtitle_stream;
- AVStream *subtitle_st;
- PacketQueue subtitleq;
-
- double frame_timer;
- double frame_last_returned_time;
- double frame_last_filter_delay;
- int video_stream;
- AVStream *video_st;
- PacketQueue videoq;
- double max_frame_duration; // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
- struct SwsContext *img_convert_ctx;
- struct SwsContext *sub_convert_ctx;
- int eof;
-
- char *filename;
- int width, height, xleft, ytop;
- int step;
-
- #if CONFIG_AVFILTER
- int vfilter_idx;
- AVFilterContext *in_video_filter; // the first filter in the video chain
- AVFilterContext *out_video_filter; // the last filter in the video chain
- AVFilterContext *in_audio_filter; // the first filter in the audio chain
- AVFilterContext *out_audio_filter; // the last filter in the audio chain
- AVFilterGraph *agraph; // audio filter graph
- #endif
-
- int last_video_stream, last_audio_stream, last_subtitle_stream;
-
- SDL_cond *continue_read_thread;
- } VideoState;
-
- /* options specified by the user */
- static AVInputFormat *file_iformat;
- static const char *input_filename;
- static const char *window_title;
- static int default_width = 640;
- static int default_height = 480;
- static int screen_width = 0;
- static int screen_height = 0;
- static int screen_left = SDL_WINDOWPOS_CENTERED;
- static int screen_top = SDL_WINDOWPOS_CENTERED;
- static int audio_disable;
- static int video_disable;
- static int subtitle_disable;
- static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
- static int seek_by_bytes = -1;
- static float seek_interval = 10;
- static int display_disable;
- static int borderless;
- static int alwaysontop;
- static int startup_volume = 100;
- static int show_status = -1;
- static int av_sync_type = AV_SYNC_AUDIO_MASTER;
- static int64_t start_time = AV_NOPTS_VALUE;
- static int64_t duration = AV_NOPTS_VALUE;
- static int fast = 0;
- static int genpts = 0;
- static int lowres = 0;
- static int decoder_reorder_pts = -1;
- static int autoexit;
- static int exit_on_keydown;
- static int exit_on_mousedown;
- static int loop = 1;
- static int framedrop = -1;
- static int infinite_buffer = -1;
- static enum ShowMode show_mode = SHOW_MODE_NONE;
- static const char *audio_codec_name;
- static const char *subtitle_codec_name;
- static const char *video_codec_name;
- double rdftspeed = 0.02;
- static int64_t cursor_last_shown;
- static int cursor_hidden = 0;
- #if CONFIG_AVFILTER
- static const char **vfilters_list = NULL;
- static int nb_vfilters = 0;
- static char *afilters = NULL;
- #endif
- static int autorotate = 1;
- static int find_stream_info = 1;
- static int filter_nbthreads = 0;
-
- /* current context */
- static int is_full_screen;
- static int64_t audio_callback_time;
-
- #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
-
- static SDL_Window *window;
- static SDL_Renderer *renderer;
- static SDL_RendererInfo renderer_info = {0};
- static SDL_AudioDeviceID audio_dev;
-
- static const struct TextureFormatEntry {
- enum AVPixelFormat format;
- int texture_fmt;
- } sdl_texture_format_map[] = {
- { AV_PIX_FMT_RGB8, SDL_PIXELFORMAT_RGB332 },
- { AV_PIX_FMT_RGB444, SDL_PIXELFORMAT_RGB444 },
- { AV_PIX_FMT_RGB555, SDL_PIXELFORMAT_RGB555 },
- { AV_PIX_FMT_BGR555, SDL_PIXELFORMAT_BGR555 },
- { AV_PIX_FMT_RGB565, SDL_PIXELFORMAT_RGB565 },
- { AV_PIX_FMT_BGR565, SDL_PIXELFORMAT_BGR565 },
- { AV_PIX_FMT_RGB24, SDL_PIXELFORMAT_RGB24 },
- { AV_PIX_FMT_BGR24, SDL_PIXELFORMAT_BGR24 },
- { AV_PIX_FMT_0RGB32, SDL_PIXELFORMAT_RGB888 },
- { AV_PIX_FMT_0BGR32, SDL_PIXELFORMAT_BGR888 },
- { AV_PIX_FMT_NE(RGB0, 0BGR), SDL_PIXELFORMAT_RGBX8888 },
- { AV_PIX_FMT_NE(BGR0, 0RGB), SDL_PIXELFORMAT_BGRX8888 },
- { AV_PIX_FMT_RGB32, SDL_PIXELFORMAT_ARGB8888 },
- { AV_PIX_FMT_RGB32_1, SDL_PIXELFORMAT_RGBA8888 },
- { AV_PIX_FMT_BGR32, SDL_PIXELFORMAT_ABGR8888 },
- { AV_PIX_FMT_BGR32_1, SDL_PIXELFORMAT_BGRA8888 },
- { AV_PIX_FMT_YUV420P, SDL_PIXELFORMAT_IYUV },
- { AV_PIX_FMT_YUYV422, SDL_PIXELFORMAT_YUY2 },
- { AV_PIX_FMT_UYVY422, SDL_PIXELFORMAT_UYVY },
- { AV_PIX_FMT_NONE, SDL_PIXELFORMAT_UNKNOWN },
- };
-
- #if CONFIG_AVFILTER
- static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
- {
- GROW_ARRAY(vfilters_list, nb_vfilters);
- vfilters_list[nb_vfilters - 1] = arg;
- return 0;
- }
- #endif
-
- static inline
- int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
- enum AVSampleFormat fmt2, int64_t channel_count2)
- {
- /* If channel count == 1, planar and non-planar formats are the same */
- if (channel_count1 == 1 && channel_count2 == 1)
- return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
- else
- return channel_count1 != channel_count2 || fmt1 != fmt2;
- }
-
- static inline
- int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
- {
- if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
- return channel_layout;
- else
- return 0;
- }
-
- static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
- {
- MyAVPacketList pkt1;
-
- if (q->abort_request)
- return -1;
-
- if (av_fifo_space(q->pkt_list) < sizeof(pkt1)) {
- if (av_fifo_grow(q->pkt_list, sizeof(pkt1)) < 0)
- return -1;
- }
-
- pkt1.pkt = pkt;
- pkt1.serial = q->serial;
-
- av_fifo_generic_write(q->pkt_list, &pkt1, sizeof(pkt1), NULL);
- q->nb_packets++;
- q->size += pkt1.pkt->size + sizeof(pkt1);
- q->duration += pkt1.pkt->duration;
- /* XXX: should duplicate packet data in DV case */
- SDL_CondSignal(q->cond);
- return 0;
- }
-
- static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
- {
- AVPacket *pkt1;
- int ret;
-
- pkt1 = av_packet_alloc();
- if (!pkt1) {
- av_packet_unref(pkt);
- return -1;
- }
- av_packet_move_ref(pkt1, pkt);
-
- SDL_LockMutex(q->mutex);
- ret = packet_queue_put_private(q, pkt1);
- SDL_UnlockMutex(q->mutex);
-
- if (ret < 0)
- av_packet_free(&pkt1);
-
- return ret;
- }
-
- static int packet_queue_put_nullpacket(PacketQueue *q, AVPacket *pkt, int stream_index)
- {
- pkt->stream_index = stream_index;
- return packet_queue_put(q, pkt);
- }
-
- /* packet queue handling */
- static int packet_queue_init(PacketQueue *q)
- {
- memset(q, 0, sizeof(PacketQueue));
- q->pkt_list = av_fifo_alloc(sizeof(MyAVPacketList));
- if (!q->pkt_list)
- return AVERROR(ENOMEM);
- q->mutex = SDL_CreateMutex();
- if (!q->mutex) {
- av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
- return AVERROR(ENOMEM);
- }
- q->cond = SDL_CreateCond();
- if (!q->cond) {
- av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
- return AVERROR(ENOMEM);
- }
- q->abort_request = 1;
- return 0;
- }
-
- static void packet_queue_flush(PacketQueue *q)
- {
- MyAVPacketList pkt1;
-
- SDL_LockMutex(q->mutex);
- while (av_fifo_size(q->pkt_list) >= sizeof(pkt1)) {
- av_fifo_generic_read(q->pkt_list, &pkt1, sizeof(pkt1), NULL);
- av_packet_free(&pkt1.pkt);
- }
- q->nb_packets = 0;
- q->size = 0;
- q->duration = 0;
- q->serial++;
- SDL_UnlockMutex(q->mutex);
- }
-
- static void packet_queue_destroy(PacketQueue *q)
- {
- packet_queue_flush(q);
- av_fifo_freep(&q->pkt_list);
- SDL_DestroyMutex(q->mutex);
- SDL_DestroyCond(q->cond);
- }
-
- static void packet_queue_abort(PacketQueue *q)
- {
- SDL_LockMutex(q->mutex);
-
- q->abort_request = 1;
-
- SDL_CondSignal(q->cond);
-
- SDL_UnlockMutex(q->mutex);
- }
-
- static void packet_queue_start(PacketQueue *q)
- {
- SDL_LockMutex(q->mutex);
- q->abort_request = 0;
- q->serial++;
- SDL_UnlockMutex(q->mutex);
- }
-
- /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
- static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
- {
- MyAVPacketList pkt1;
- int ret;
-
- SDL_LockMutex(q->mutex);
-
- for (;;) {
- if (q->abort_request) {
- ret = -1;
- break;
- }
-
- if (av_fifo_size(q->pkt_list) >= sizeof(pkt1)) {
- av_fifo_generic_read(q->pkt_list, &pkt1, sizeof(pkt1), NULL);
- q->nb_packets--;
- q->size -= pkt1.pkt->size + sizeof(pkt1);
- q->duration -= pkt1.pkt->duration;
- av_packet_move_ref(pkt, pkt1.pkt);
- if (serial)
- *serial = pkt1.serial;
- av_packet_free(&pkt1.pkt);
- ret = 1;
- break;
- } else if (!block) {
- ret = 0;
- break;
- } else {
- SDL_CondWait(q->cond, q->mutex);
- }
- }
- SDL_UnlockMutex(q->mutex);
- return ret;
- }
-
- static int decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
- memset(d, 0, sizeof(Decoder));
- d->pkt = av_packet_alloc();
- if (!d->pkt)
- return AVERROR(ENOMEM);
- d->avctx = avctx;
- d->queue = queue;
- d->empty_queue_cond = empty_queue_cond;
- d->start_pts = AV_NOPTS_VALUE;
- d->pkt_serial = -1;
- return 0;
- }
-
- static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
- int ret = AVERROR(EAGAIN);
-
- for (;;) {
- if (d->queue->serial == d->pkt_serial) {
- do {
- if (d->queue->abort_request)
- return -1;
-
- switch (d->avctx->codec_type) {
- case AVMEDIA_TYPE_VIDEO:
- ret = avcodec_receive_frame(d->avctx, frame);
- if (ret >= 0) {
- if (decoder_reorder_pts == -1) {
- frame->pts = frame->best_effort_timestamp;
- } else if (!decoder_reorder_pts) {
- frame->pts = frame->pkt_dts;
- }
- }
- break;
- case AVMEDIA_TYPE_AUDIO:
- ret = avcodec_receive_frame(d->avctx, frame);
- if (ret >= 0) {
- AVRational tb = (AVRational){1, frame->sample_rate};
- if (frame->pts != AV_NOPTS_VALUE)
- frame->pts = av_rescale_q(frame->pts, d->avctx->pkt_timebase, tb);
- else if (d->next_pts != AV_NOPTS_VALUE)
- frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
- if (frame->pts != AV_NOPTS_VALUE) {
- d->next_pts = frame->pts + frame->nb_samples;
- d->next_pts_tb = tb;
- }
- }
- break;
- }
- if (ret == AVERROR_EOF) {
- d->finished = d->pkt_serial;
- avcodec_flush_buffers(d->avctx);
- return 0;
- }
- if (ret >= 0)
- return 1;
- } while (ret != AVERROR(EAGAIN));
- }
-
- do {
- if (d->queue->nb_packets == 0)
- SDL_CondSignal(d->empty_queue_cond);
- if (d->packet_pending) {
- d->packet_pending = 0;
- } else {
- int old_serial = d->pkt_serial;
- if (packet_queue_get(d->queue, d->pkt, 1, &d->pkt_serial) < 0)
- return -1;
- if (old_serial != d->pkt_serial) {
- avcodec_flush_buffers(d->avctx);
- d->finished = 0;
- d->next_pts = d->start_pts;
- d->next_pts_tb = d->start_pts_tb;
- }
- }
- if (d->queue->serial == d->pkt_serial)
- break;
- av_packet_unref(d->pkt);
- } while (1);
-
- if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
- int got_frame = 0;
- ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, d->pkt);
- if (ret < 0) {
- ret = AVERROR(EAGAIN);
- } else {
- if (got_frame && !d->pkt->data) {
- d->packet_pending = 1;
- }
- ret = got_frame ? 0 : (d->pkt->data ? AVERROR(EAGAIN) : AVERROR_EOF);
- }
- av_packet_unref(d->pkt);
- } else {
- if (avcodec_send_packet(d->avctx, d->pkt) == AVERROR(EAGAIN)) {
- av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n");
- d->packet_pending = 1;
- } else {
- av_packet_unref(d->pkt);
- }
- }
- }
- }
-
- static void decoder_destroy(Decoder *d) {
- av_packet_free(&d->pkt);
- avcodec_free_context(&d->avctx);
- }
-
- static void frame_queue_unref_item(Frame *vp)
- {
- av_frame_unref(vp->frame);
- avsubtitle_free(&vp->sub);
- }
-
- static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
- {
- int i;
- memset(f, 0, sizeof(FrameQueue));
- if (!(f->mutex = SDL_CreateMutex())) {
- av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
- return AVERROR(ENOMEM);
- }
- if (!(f->cond = SDL_CreateCond())) {
- av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
- return AVERROR(ENOMEM);
- }
- f->pktq = pktq;
- f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
- f->keep_last = !!keep_last;
- for (i = 0; i < f->max_size; i++)
- if (!(f->queue[i].frame = av_frame_alloc()))
- return AVERROR(ENOMEM);
- return 0;
- }
-
- static void frame_queue_destory(FrameQueue *f)
- {
- int i;
- for (i = 0; i < f->max_size; i++) {
- Frame *vp = &f->queue[i];
- frame_queue_unref_item(vp);
- av_frame_free(&vp->frame);
- }
- SDL_DestroyMutex(f->mutex);
- SDL_DestroyCond(f->cond);
- }
-
- static void frame_queue_signal(FrameQueue *f)
- {
- SDL_LockMutex(f->mutex);
- SDL_CondSignal(f->cond);
- SDL_UnlockMutex(f->mutex);
- }
-
- static Frame *frame_queue_peek(FrameQueue *f)
- {
- return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
- }
-
- static Frame *frame_queue_peek_next(FrameQueue *f)
- {
- return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
- }
-
- static Frame *frame_queue_peek_last(FrameQueue *f)
- {
- return &f->queue[f->rindex];
- }
-
- static Frame *frame_queue_peek_writable(FrameQueue *f)
- {
- /* wait until we have space to put a new frame */
- SDL_LockMutex(f->mutex);
- while (f->size >= f->max_size &&
- !f->pktq->abort_request) {
- SDL_CondWait(f->cond, f->mutex);
- }
- SDL_UnlockMutex(f->mutex);
-
- if (f->pktq->abort_request)
- return NULL;
-
- return &f->queue[f->windex];
- }
-
- static Frame *frame_queue_peek_readable(FrameQueue *f)
- {
- /* wait until we have a readable a new frame */
- SDL_LockMutex(f->mutex);
- while (f->size - f->rindex_shown <= 0 &&
- !f->pktq->abort_request) {
- SDL_CondWait(f->cond, f->mutex);
- }
- SDL_UnlockMutex(f->mutex);
-
- if (f->pktq->abort_request)
- return NULL;
-
- return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
- }
-
- static void frame_queue_push(FrameQueue *f)
- {
- if (++f->windex == f->max_size)
- f->windex = 0;
- SDL_LockMutex(f->mutex);
- f->size++;
- SDL_CondSignal(f->cond);
- SDL_UnlockMutex(f->mutex);
- }
-
- static void frame_queue_next(FrameQueue *f)
- {
- if (f->keep_last && !f->rindex_shown) {
- f->rindex_shown = 1;
- return;
- }
- frame_queue_unref_item(&f->queue[f->rindex]);
- if (++f->rindex == f->max_size)
- f->rindex = 0;
- SDL_LockMutex(f->mutex);
- f->size--;
- SDL_CondSignal(f->cond);
- SDL_UnlockMutex(f->mutex);
- }
-
- /* return the number of undisplayed frames in the queue */
- static int frame_queue_nb_remaining(FrameQueue *f)
- {
- return f->size - f->rindex_shown;
- }
-
- /* return last shown position */
- static int64_t frame_queue_last_pos(FrameQueue *f)
- {
- Frame *fp = &f->queue[f->rindex];
- if (f->rindex_shown && fp->serial == f->pktq->serial)
- return fp->pos;
- else
- return -1;
- }
-
- static void decoder_abort(Decoder *d, FrameQueue *fq)
- {
- packet_queue_abort(d->queue);
- frame_queue_signal(fq);
- SDL_WaitThread(d->decoder_tid, NULL);
- d->decoder_tid = NULL;
- packet_queue_flush(d->queue);
- }
-
- static inline void fill_rectangle(int x, int y, int w, int h)
- {
- SDL_Rect rect;
- rect.x = x;
- rect.y = y;
- rect.w = w;
- rect.h = h;
- if (w && h)
- SDL_RenderFillRect(renderer, &rect);
- }
-
- static int realloc_texture(SDL_Texture **texture, Uint32 new_format, int new_width, int new_height, SDL_BlendMode blendmode, int init_texture)
- {
- Uint32 format;
- int access, w, h;
- if (!*texture || SDL_QueryTexture(*texture, &format, &access, &w, &h) < 0 || new_width != w || new_height != h || new_format != format) {
- void *pixels;
- int pitch;
- if (*texture)
- SDL_DestroyTexture(*texture);
- if (!(*texture = SDL_CreateTexture(renderer, new_format, SDL_TEXTUREACCESS_STREAMING, new_width, new_height)))
- return -1;
- if (SDL_SetTextureBlendMode(*texture, blendmode) < 0)
- return -1;
- if (init_texture) {
- if (SDL_LockTexture(*texture, NULL, &pixels, &pitch) < 0)
- return -1;
- memset(pixels, 0, pitch * new_height);
- SDL_UnlockTexture(*texture);
- }
- av_log(NULL, AV_LOG_VERBOSE, "Created %dx%d texture with %s.\n", new_width, new_height, SDL_GetPixelFormatName(new_format));
- }
- return 0;
- }
-
- static void calculate_display_rect(SDL_Rect *rect,
- int scr_xleft, int scr_ytop, int scr_width, int scr_height,
- int pic_width, int pic_height, AVRational pic_sar)
- {
- AVRational aspect_ratio = pic_sar;
- int64_t width, height, x, y;
-
- if (av_cmp_q(aspect_ratio, av_make_q(0, 1)) <= 0)
- aspect_ratio = av_make_q(1, 1);
-
- aspect_ratio = av_mul_q(aspect_ratio, av_make_q(pic_width, pic_height));
-
- /* XXX: we suppose the screen has a 1.0 pixel ratio */
- height = scr_height;
- width = av_rescale(height, aspect_ratio.num, aspect_ratio.den) & ~1;
- if (width > scr_width) {
- width = scr_width;
- height = av_rescale(width, aspect_ratio.den, aspect_ratio.num) & ~1;
- }
- x = (scr_width - width) / 2;
- y = (scr_height - height) / 2;
- rect->x = scr_xleft + x;
- rect->y = scr_ytop + y;
- rect->w = FFMAX((int)width, 1);
- rect->h = FFMAX((int)height, 1);
- }
-
- static void get_sdl_pix_fmt_and_blendmode(int format, Uint32 *sdl_pix_fmt, SDL_BlendMode *sdl_blendmode)
- {
- int i;
- *sdl_blendmode = SDL_BLENDMODE_NONE;
- *sdl_pix_fmt = SDL_PIXELFORMAT_UNKNOWN;
- if (format == AV_PIX_FMT_RGB32 ||
- format == AV_PIX_FMT_RGB32_1 ||
- format == AV_PIX_FMT_BGR32 ||
- format == AV_PIX_FMT_BGR32_1)
- *sdl_blendmode = SDL_BLENDMODE_BLEND;
- for (i = 0; i < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; i++) {
- if (format == sdl_texture_format_map[i].format) {
- *sdl_pix_fmt = sdl_texture_format_map[i].texture_fmt;
- return;
- }
- }
- }
-
- static int upload_texture(SDL_Texture **tex, AVFrame *frame, struct SwsContext **img_convert_ctx) {
- int ret = 0;
- Uint32 sdl_pix_fmt;
- SDL_BlendMode sdl_blendmode;
- get_sdl_pix_fmt_and_blendmode(frame->format, &sdl_pix_fmt, &sdl_blendmode);
- if (realloc_texture(tex, sdl_pix_fmt == SDL_PIXELFORMAT_UNKNOWN ? SDL_PIXELFORMAT_ARGB8888 : sdl_pix_fmt, frame->width, frame->height, sdl_blendmode, 0) < 0)
- return -1;
- switch (sdl_pix_fmt) {
- case SDL_PIXELFORMAT_UNKNOWN:
- /* This should only happen if we are not using avfilter... */
- *img_convert_ctx = sws_getCachedContext(*img_convert_ctx,
- frame->width, frame->height, frame->format, frame->width, frame->height,
- AV_PIX_FMT_BGRA, sws_flags, NULL, NULL, NULL);
- if (*img_convert_ctx != NULL) {
- uint8_t *pixels[4];
- int pitch[4];
- if (!SDL_LockTexture(*tex, NULL, (void **)pixels, pitch)) {
- sws_scale(*img_convert_ctx, (const uint8_t * const *)frame->data, frame->linesize,
- 0, frame->height, pixels, pitch);
- SDL_UnlockTexture(*tex);
- }
- } else {
- av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
- ret = -1;
- }
- break;
- case SDL_PIXELFORMAT_IYUV:
- if (frame->linesize[0] > 0 && frame->linesize[1] > 0 && frame->linesize[2] > 0) {
- ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0], frame->linesize[0],
- frame->data[1], frame->linesize[1],
- frame->data[2], frame->linesize[2]);
- } else if (frame->linesize[0] < 0 && frame->linesize[1] < 0 && frame->linesize[2] < 0) {
- ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0],
- frame->data[1] + frame->linesize[1] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[1],
- frame->data[2] + frame->linesize[2] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[2]);
- } else {
- av_log(NULL, AV_LOG_ERROR, "Mixed negative and positive linesizes are not supported.\n");
- return -1;
- }
- break;
- default:
- if (frame->linesize[0] < 0) {
- ret = SDL_UpdateTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0]);
- } else {
- ret = SDL_UpdateTexture(*tex, NULL, frame->data[0], frame->linesize[0]);
- }
- break;
- }
- return ret;
- }
-
- static void set_sdl_yuv_conversion_mode(AVFrame *frame)
- {
- #if SDL_VERSION_ATLEAST(2,0,8)
- SDL_YUV_CONVERSION_MODE mode = SDL_YUV_CONVERSION_AUTOMATIC;
- if (frame && (frame->format == AV_PIX_FMT_YUV420P || frame->format == AV_PIX_FMT_YUYV422 || frame->format == AV_PIX_FMT_UYVY422)) {
- if (frame->color_range == AVCOL_RANGE_JPEG)
- mode = SDL_YUV_CONVERSION_JPEG;
- else if (frame->colorspace == AVCOL_SPC_BT709)
- mode = SDL_YUV_CONVERSION_BT709;
- else if (frame->colorspace == AVCOL_SPC_BT470BG || frame->colorspace == AVCOL_SPC_SMPTE170M || frame->colorspace == AVCOL_SPC_SMPTE240M)
- mode = SDL_YUV_CONVERSION_BT601;
- }
- SDL_SetYUVConversionMode(mode);
- #endif
- }
-
- static void video_image_display(VideoState *is)
- {
- Frame *vp;
- Frame *sp = NULL;
- SDL_Rect rect;
-
- vp = frame_queue_peek_last(&is->pictq);
- if (is->subtitle_st) {
- if (frame_queue_nb_remaining(&is->subpq) > 0) {
- sp = frame_queue_peek(&is->subpq);
-
- if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
- if (!sp->uploaded) {
- uint8_t* pixels[4];
- int pitch[4];
- int i;
- if (!sp->width || !sp->height) {
- sp->width = vp->width;
- sp->height = vp->height;
- }
- if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0)
- return;
-
- for (i = 0; i < sp->sub.num_rects; i++) {
- AVSubtitleRect *sub_rect = sp->sub.rects[i];
-
- sub_rect->x = av_clip(sub_rect->x, 0, sp->width );
- sub_rect->y = av_clip(sub_rect->y, 0, sp->height);
- sub_rect->w = av_clip(sub_rect->w, 0, sp->width - sub_rect->x);
- sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y);
-
- is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
- sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8,
- sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA,
- 0, NULL, NULL, NULL);
- if (!is->sub_convert_ctx) {
- av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
- return;
- }
- if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) {
- sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize,
- 0, sub_rect->h, pixels, pitch);
- SDL_UnlockTexture(is->sub_texture);
- }
- }
- sp->uploaded = 1;
- }
- } else
- sp = NULL;
- }
- }
-
- calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
-
- if (!vp->uploaded) {
- if (upload_texture(&is->vid_texture, vp->frame, &is->img_convert_ctx) < 0)
- return;
- vp->uploaded = 1;
- vp->flip_v = vp->frame->linesize[0] < 0;
- }
-
- set_sdl_yuv_conversion_mode(vp->frame);
- SDL_RenderCopyEx(renderer, is->vid_texture, NULL, &rect, 0, NULL, vp->flip_v ? SDL_FLIP_VERTICAL : 0);
- set_sdl_yuv_conversion_mode(NULL);
- if (sp) {
- #if USE_ONEPASS_SUBTITLE_RENDER
- SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect);
- #else
- int i;
- double xratio = (double)rect.w / (double)sp->width;
- double yratio = (double)rect.h / (double)sp->height;
- for (i = 0; i < sp->sub.num_rects; i++) {
- SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i];
- SDL_Rect target = {.x = rect.x + sub_rect->x * xratio,
- .y = rect.y + sub_rect->y * yratio,
- .w = sub_rect->w * xratio,
- .h = sub_rect->h * yratio};
- SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target);
- }
- #endif
- }
- }
-
- static inline int compute_mod(int a, int b)
- {
- return a < 0 ? a%b + b : a%b;
- }
-
- static void video_audio_display(VideoState *s)
- {
- int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
- int ch, channels, h, h2;
- int64_t time_diff;
- int rdft_bits, nb_freq;
-
- for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
- ;
- nb_freq = 1 << (rdft_bits - 1);
-
- /* compute display index : center on currently output samples */
- channels = s->audio_tgt.channels;
- nb_display_channels = channels;
- if (!s->paused) {
- int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
- n = 2 * channels;
- delay = s->audio_write_buf_size;
- delay /= n;
-
- /* to be more precise, we take into account the time spent since
- the last buffer computation */
- if (audio_callback_time) {
- time_diff = av_gettime_relative() - audio_callback_time;
- delay -= (time_diff * s->audio_tgt.freq) / 1000000;
- }
-
- delay += 2 * data_used;
- if (delay < data_used)
- delay = data_used;
-
- i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
- if (s->show_mode == SHOW_MODE_WAVES) {
- h = INT_MIN;
- for (i = 0; i < 1000; i += channels) {
- int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
- int a = s->sample_array[idx];
- int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
- int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
- int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
- int score = a - d;
- if (h < score && (b ^ c) < 0) {
- h = score;
- i_start = idx;
- }
- }
- }
-
- s->last_i_start = i_start;
- } else {
- i_start = s->last_i_start;
- }
-
- if (s->show_mode == SHOW_MODE_WAVES) {
- SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
-
- /* total height for one channel */
- h = s->height / nb_display_channels;
- /* graph height / 2 */
- h2 = (h * 9) / 20;
- for (ch = 0; ch < nb_display_channels; ch++) {
- i = i_start + ch;
- y1 = s->ytop + ch * h + (h / 2); /* position of center line */
- for (x = 0; x < s->width; x++) {
- y = (s->sample_array[i] * h2) >> 15;
- if (y < 0) {
- y = -y;
- ys = y1 - y;
- } else {
- ys = y1;
- }
- fill_rectangle(s->xleft + x, ys, 1, y);
- i += channels;
- if (i >= SAMPLE_ARRAY_SIZE)
- i -= SAMPLE_ARRAY_SIZE;
- }
- }
-
- SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
-
- for (ch = 1; ch < nb_display_channels; ch++) {
- y = s->ytop + ch * h;
- fill_rectangle(s->xleft, y, s->width, 1);
- }
- } else {
- if (realloc_texture(&s->vis_texture, SDL_PIXELFORMAT_ARGB8888, s->width, s->height, SDL_BLENDMODE_NONE, 1) < 0)
- return;
-
- if (s->xpos >= s->width)
- s->xpos = 0;
- nb_display_channels= FFMIN(nb_display_channels, 2);
- if (rdft_bits != s->rdft_bits) {
- av_rdft_end(s->rdft);
- av_free(s->rdft_data);
- s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
- s->rdft_bits = rdft_bits;
- s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
- }
- if (!s->rdft || !s->rdft_data){
- av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
- s->show_mode = SHOW_MODE_WAVES;
- } else {
- FFTSample *data[2];
- SDL_Rect rect = {.x = s->xpos, .y = 0, .w = 1, .h = s->height};
- uint32_t *pixels;
- int pitch;
- for (ch = 0; ch < nb_display_channels; ch++) {
- data[ch] = s->rdft_data + 2 * nb_freq * ch;
- i = i_start + ch;
- for (x = 0; x < 2 * nb_freq; x++) {
- double w = (x-nb_freq) * (1.0 / nb_freq);
- data[ch][x] = s->sample_array[i] * (1.0 - w * w);
- i += channels;
- if (i >= SAMPLE_ARRAY_SIZE)
- i -= SAMPLE_ARRAY_SIZE;
- }
- av_rdft_calc(s->rdft, data[ch]);
- }
- /* Least efficient way to do this, we should of course
- * directly access it but it is more than fast enough. */
- if (!SDL_LockTexture(s->vis_texture, &rect, (void **)&pixels, &pitch)) {
- pitch >>= 2;
- pixels += pitch * s->height;
- for (y = 0; y < s->height; y++) {
- double w = 1 / sqrt(nb_freq);
- int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
- int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
- : a;
- a = FFMIN(a, 255);
- b = FFMIN(b, 255);
- pixels -= pitch;
- *pixels = (a << 16) + (b << 8) + ((a+b) >> 1);
- }
- SDL_UnlockTexture(s->vis_texture);
- }
- SDL_RenderCopy(renderer, s->vis_texture, NULL, NULL);
- }
- if (!s->paused)
- s->xpos++;
- }
- }
-
- static void stream_component_close(VideoState *is, int stream_index)
- {
- AVFormatContext *ic = is->ic;
- AVCodecParameters *codecpar;
-
- if (stream_index < 0 || stream_index >= ic->nb_streams)
- return;
- codecpar = ic->streams[stream_index]->codecpar;
-
- switch (codecpar->codec_type) {
- case AVMEDIA_TYPE_AUDIO:
- decoder_abort(&is->auddec, &is->sampq);
- SDL_CloseAudioDevice(audio_dev);
- decoder_destroy(&is->auddec);
- swr_free(&is->swr_ctx);
- av_freep(&is->audio_buf1);
- is->audio_buf1_size = 0;
- is->audio_buf = NULL;
-
- if (is->rdft) {
- av_rdft_end(is->rdft);
- av_freep(&is->rdft_data);
- is->rdft = NULL;
- is->rdft_bits = 0;
- }
- break;
- case AVMEDIA_TYPE_VIDEO:
- decoder_abort(&is->viddec, &is->pictq);
- decoder_destroy(&is->viddec);
- break;
- case AVMEDIA_TYPE_SUBTITLE:
- decoder_abort(&is->subdec, &is->subpq);
- decoder_destroy(&is->subdec);
- break;
- default:
- break;
- }
-
- ic->streams[stream_index]->discard = AVDISCARD_ALL;
- switch (codecpar->codec_type) {
- case AVMEDIA_TYPE_AUDIO:
- is->audio_st = NULL;
- is->audio_stream = -1;
- break;
- case AVMEDIA_TYPE_VIDEO:
- is->video_st = NULL;
- is->video_stream = -1;
- break;
- case AVMEDIA_TYPE_SUBTITLE:
- is->subtitle_st = NULL;
- is->subtitle_stream = -1;
- break;
- default:
- break;
- }
- }
-
- static void stream_close(VideoState *is)
- {
- /* XXX: use a special url_shutdown call to abort parse cleanly */
- is->abort_request = 1;
- SDL_WaitThread(is->read_tid, NULL);
-
- /* close each stream */
- if (is->audio_stream >= 0)
- stream_component_close(is, is->audio_stream);
- if (is->video_stream >= 0)
- stream_component_close(is, is->video_stream);
- if (is->subtitle_stream >= 0)
- stream_component_close(is, is->subtitle_stream);
-
- avformat_close_input(&is->ic);
-
- packet_queue_destroy(&is->videoq);
- packet_queue_destroy(&is->audioq);
- packet_queue_destroy(&is->subtitleq);
-
- /* free all pictures */
- frame_queue_destory(&is->pictq);
- frame_queue_destory(&is->sampq);
- frame_queue_destory(&is->subpq);
- SDL_DestroyCond(is->continue_read_thread);
- sws_freeContext(is->img_convert_ctx);
- sws_freeContext(is->sub_convert_ctx);
- av_free(is->filename);
- if (is->vis_texture)
- SDL_DestroyTexture(is->vis_texture);
- if (is->vid_texture)
- SDL_DestroyTexture(is->vid_texture);
- if (is->sub_texture)
- SDL_DestroyTexture(is->sub_texture);
- av_free(is);
- }
-
- static void do_exit(VideoState *is)
- {
- if (is) {
- stream_close(is);
- }
- if (renderer)
- SDL_DestroyRenderer(renderer);
- if (window)
- SDL_DestroyWindow(window);
- uninit_opts();
- #if CONFIG_AVFILTER
- av_freep(&vfilters_list);
- #endif
- avformat_network_deinit();
- if (show_status)
- printf("\n");
- SDL_Quit();
- av_log(NULL, AV_LOG_QUIET, "%s", "");
- exit(0);
- }
-
- static void sigterm_handler(int sig)
- {
- exit(123);
- }
-
- static void set_default_window_size(int width, int height, AVRational sar)
- {
- SDL_Rect rect;
- int max_width = screen_width ? screen_width : INT_MAX;
- int max_height = screen_height ? screen_height : INT_MAX;
- if (max_width == INT_MAX && max_height == INT_MAX)
- max_height = height;
- calculate_display_rect(&rect, 0, 0, max_width, max_height, width, height, sar);
- default_width = rect.w;
- default_height = rect.h;
- }
-
- static int video_open(VideoState *is)
- {
- int w,h;
-
- w = screen_width ? screen_width : default_width;
- h = screen_height ? screen_height : default_height;
-
- if (!window_title)
- window_title = input_filename;
- SDL_SetWindowTitle(window, window_title);
-
- SDL_SetWindowSize(window, w, h);
- SDL_SetWindowPosition(window, screen_left, screen_top);
- if (is_full_screen)
- SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP);
- SDL_ShowWindow(window);
-
- is->width = w;
- is->height = h;
-
- return 0;
- }
-
- /* display the current picture, if any */
- static void video_display(VideoState *is)
- {
- if (!is->width)
- video_open(is);
-
- SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
- SDL_RenderClear(renderer);
- if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
- video_audio_display(is);
- else if (is->video_st)
- video_image_display(is);
- SDL_RenderPresent(renderer);
- }
-
- static double get_clock(Clock *c)
- {
- if (*c->queue_serial != c->serial)
- return NAN;
- if (c->paused) {
- return c->pts;
- } else {
- double time = av_gettime_relative() / 1000000.0;
- return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
- }
- }
-
- static void set_clock_at(Clock *c, double pts, int serial, double time)
- {
- c->pts = pts;
- c->last_updated = time;
- c->pts_drift = c->pts - time;
- c->serial = serial;
- }
-
- static void set_clock(Clock *c, double pts, int serial)
- {
- double time = av_gettime_relative() / 1000000.0;
- set_clock_at(c, pts, serial, time);
- }
-
- static void set_clock_speed(Clock *c, double speed)
- {
- set_clock(c, get_clock(c), c->serial);
- c->speed = speed;
- }
-
- static void init_clock(Clock *c, int *queue_serial)
- {
- c->speed = 1.0;
- c->paused = 0;
- c->queue_serial = queue_serial;
- set_clock(c, NAN, -1);
- }
-
- static void sync_clock_to_slave(Clock *c, Clock *slave)
- {
- double clock = get_clock(c);
- double slave_clock = get_clock(slave);
- if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
- set_clock(c, slave_clock, slave->serial);
- }
-
- static int get_master_sync_type(VideoState *is) {
- if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
- if (is->video_st)
- return AV_SYNC_VIDEO_MASTER;
- else
- return AV_SYNC_AUDIO_MASTER;
- } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
- if (is->audio_st)
- return AV_SYNC_AUDIO_MASTER;
- else
- return AV_SYNC_EXTERNAL_CLOCK;
- } else {
- return AV_SYNC_EXTERNAL_CLOCK;
- }
- }
-
- /* get the current master clock value */
- static double get_master_clock(VideoState *is)
- {
- double val;
-
- switch (get_master_sync_type(is)) {
- case AV_SYNC_VIDEO_MASTER:
- val = get_clock(&is->vidclk);
- break;
- case AV_SYNC_AUDIO_MASTER:
- val = get_clock(&is->audclk);
- break;
- default:
- val = get_clock(&is->extclk);
- break;
- }
- return val;
- }
-
- static void check_external_clock_speed(VideoState *is) {
- if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
- is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
- set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
- } else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
- (is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
- set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
- } else {
- double speed = is->extclk.speed;
- if (speed != 1.0)
- set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
- }
- }
-
- /* seek in the stream */
- static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
- {
- if (!is->seek_req) {
- is->seek_pos = pos;
- is->seek_rel = rel;
- is->seek_flags &= ~AVSEEK_FLAG_BYTE;
- if (seek_by_bytes)
- is->seek_flags |= AVSEEK_FLAG_BYTE;
- is->seek_req = 1;
- SDL_CondSignal(is->continue_read_thread);
- }
- }
-
- /* pause or resume the video */
- static void stream_toggle_pause(VideoState *is)
- {
- if (is->paused) {
- is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
- if (is->read_pause_return != AVERROR(ENOSYS)) {
- is->vidclk.paused = 0;
- }
- set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
- }
- set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
- is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
- }
-
- static void toggle_pause(VideoState *is)
- {
- stream_toggle_pause(is);
- is->step = 0;
- }
-
- static void toggle_mute(VideoState *is)
- {
- is->muted = !is->muted;
- }
-
- static void update_volume(VideoState *is, int sign, double step)
- {
- double volume_level = is->audio_volume ? (20 * log(is->audio_volume / (double)SDL_MIX_MAXVOLUME) / log(10)) : -1000.0;
- int new_volume = lrint(SDL_MIX_MAXVOLUME * pow(10.0, (volume_level + sign * step) / 20.0));
- is->audio_volume = av_clip(is->audio_volume == new_volume ? (is->audio_volume + sign) : new_volume, 0, SDL_MIX_MAXVOLUME);
- }
-
- static void step_to_next_frame(VideoState *is)
- {
- /* if the stream is paused unpause it, then step */
- if (is->paused)
- stream_toggle_pause(is);
- is->step = 1;
- }
-
- static double compute_target_delay(double delay, VideoState *is)
- {
- double sync_threshold, diff = 0;
-
- /* update delay to follow master synchronisation source */
- if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
- /* if video is slave, we try to correct big delays by
- duplicating or deleting a frame */
- diff = get_clock(&is->vidclk) - get_master_clock(is);
-
- /* skip or repeat frame. We take into account the
- delay to compute the threshold. I still don't know
- if it is the best guess */
- sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
- if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
- if (diff <= -sync_threshold)
- delay = FFMAX(0, delay + diff);
- else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
- delay = delay + diff;
- else if (diff >= sync_threshold)
- delay = 2 * delay;
- }
- }
-
- av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
- delay, -diff);
-
- return delay;
- }
-
- static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
- if (vp->serial == nextvp->serial) {
- double duration = nextvp->pts - vp->pts;
- if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
- return vp->duration;
- else
- return duration;
- } else {
- return 0.0;
- }
- }
-
- static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
- /* update current video pts */
- set_clock(&is->vidclk, pts, serial);
- sync_clock_to_slave(&is->extclk, &is->vidclk);
- }
-
- /* called to display each frame */
- static void video_refresh(void *opaque, double *remaining_time)
- {
- VideoState *is = opaque;
- double time;
-
- Frame *sp, *sp2;
-
- if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
- check_external_clock_speed(is);
-
- if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
- time = av_gettime_relative() / 1000000.0;
- if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
- video_display(is);
- is->last_vis_time = time;
- }
- *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
- }
-
- if (is->video_st) {
- retry:
- if (frame_queue_nb_remaining(&is->pictq) == 0) {
- // nothing to do, no picture to display in the queue
- } else {
- double last_duration, duration, delay;
- Frame *vp, *lastvp;
-
- /* dequeue the picture */
- lastvp = frame_queue_peek_last(&is->pictq);
- vp = frame_queue_peek(&is->pictq);
-
- if (vp->serial != is->videoq.serial) {
- frame_queue_next(&is->pictq);
- goto retry;
- }
-
- if (lastvp->serial != vp->serial)
- is->frame_timer = av_gettime_relative() / 1000000.0;
-
- if (is->paused)
- goto display;
-
- /* compute nominal last_duration */
- last_duration = vp_duration(is, lastvp, vp);
- delay = compute_target_delay(last_duration, is);
-
- time= av_gettime_relative()/1000000.0;
- if (time < is->frame_timer + delay) {
- *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
- goto display;
- }
-
- is->frame_timer += delay;
- if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
- is->frame_timer = time;
-
- SDL_LockMutex(is->pictq.mutex);
- if (!isnan(vp->pts))
- update_video_pts(is, vp->pts, vp->pos, vp->serial);
- SDL_UnlockMutex(is->pictq.mutex);
-
- if (frame_queue_nb_remaining(&is->pictq) > 1) {
- Frame *nextvp = frame_queue_peek_next(&is->pictq);
- duration = vp_duration(is, vp, nextvp);
- if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
- is->frame_drops_late++;
- frame_queue_next(&is->pictq);
- goto retry;
- }
- }
-
- if (is->subtitle_st) {
- while (frame_queue_nb_remaining(&is->subpq) > 0) {
- sp = frame_queue_peek(&is->subpq);
-
- if (frame_queue_nb_remaining(&is->subpq) > 1)
- sp2 = frame_queue_peek_next(&is->subpq);
- else
- sp2 = NULL;
-
- if (sp->serial != is->subtitleq.serial
- || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
- || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
- {
- if (sp->uploaded) {
- int i;
- for (i = 0; i < sp->sub.num_rects; i++) {
- AVSubtitleRect *sub_rect = sp->sub.rects[i];
- uint8_t *pixels;
- int pitch, j;
-
- if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)&pixels, &pitch)) {
- for (j = 0; j < sub_rect->h; j++, pixels += pitch)
- memset(pixels, 0, sub_rect->w << 2);
- SDL_UnlockTexture(is->sub_texture);
- }
- }
- }
- frame_queue_next(&is->subpq);
- } else {
- break;
- }
- }
- }
-
- frame_queue_next(&is->pictq);
- is->force_refresh = 1;
-
- if (is->step && !is->paused)
- stream_toggle_pause(is);
- }
- display:
- /* display picture */
- if (!display_disable && is->force_refresh && is->show_mode == SHOW_MODE_VIDEO && is->pictq.rindex_shown)
- video_display(is);
- }
- is->force_refresh = 0;
- if (show_status) {
- AVBPrint buf;
- static int64_t last_time;
- int64_t cur_time;
- int aqsize, vqsize, sqsize;
- double av_diff;
-
- cur_time = av_gettime_relative();
- if (!last_time || (cur_time - last_time) >= 30000) {
- aqsize = 0;
- vqsize = 0;
- sqsize = 0;
- if (is->audio_st)
- aqsize = is->audioq.size;
- if (is->video_st)
- vqsize = is->videoq.size;
- if (is->subtitle_st)
- sqsize = is->subtitleq.size;
- av_diff = 0;
- if (is->audio_st && is->video_st)
- av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
- else if (is->video_st)
- av_diff = get_master_clock(is) - get_clock(&is->vidclk);
- else if (is->audio_st)
- av_diff = get_master_clock(is) - get_clock(&is->audclk);
-
- av_bprint_init(&buf, 0, AV_BPRINT_SIZE_AUTOMATIC);
- av_bprintf(&buf,
- "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
- get_master_clock(is),
- (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : " ")),
- av_diff,
- is->frame_drops_early + is->frame_drops_late,
- aqsize / 1024,
- vqsize / 1024,
- sqsize,
- is->video_st ? is->viddec.avctx->pts_correction_num_faulty_dts : 0,
- is->video_st ? is->viddec.avctx->pts_correction_num_faulty_pts : 0);
-
- if (show_status == 1 && AV_LOG_INFO > av_log_get_level())
- fprintf(stderr, "%s", buf.str);
- else
- av_log(NULL, AV_LOG_INFO, "%s", buf.str);
-
- fflush(stderr);
- av_bprint_finalize(&buf, NULL);
-
- last_time = cur_time;
- }
- }
- }
-
- static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
- {
- Frame *vp;
-
- #if defined(DEBUG_SYNC)
- printf("frame_type=%c pts=%0.3f\n",
- av_get_picture_type_char(src_frame->pict_type), pts);
- #endif
-
- if (!(vp = frame_queue_peek_writable(&is->pictq)))
- return -1;
-
- vp->sar = src_frame->sample_aspect_ratio;
- vp->uploaded = 0;
-
- vp->width = src_frame->width;
- vp->height = src_frame->height;
- vp->format = src_frame->format;
-
- vp->pts = pts;
- vp->duration = duration;
- vp->pos = pos;
- vp->serial = serial;
-
- set_default_window_size(vp->width, vp->height, vp->sar);
-
- av_frame_move_ref(vp->frame, src_frame);
- frame_queue_push(&is->pictq);
- return 0;
- }
-
- static int get_video_frame(VideoState *is, AVFrame *frame)
- {
- int got_picture;
-
- if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
- return -1;
-
- if (got_picture) {
- double dpts = NAN;
-
- if (frame->pts != AV_NOPTS_VALUE)
- dpts = av_q2d(is->video_st->time_base) * frame->pts;
-
- frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
-
- if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
- if (frame->pts != AV_NOPTS_VALUE) {
- double diff = dpts - get_master_clock(is);
- if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
- diff - is->frame_last_filter_delay < 0 &&
- is->viddec.pkt_serial == is->vidclk.serial &&
- is->videoq.nb_packets) {
- is->frame_drops_early++;
- av_frame_unref(frame);
- got_picture = 0;
- }
- }
- }
- }
-
- return got_picture;
- }
-
- #if CONFIG_AVFILTER
- static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
- AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
- {
- int ret, i;
- int nb_filters = graph->nb_filters;
- AVFilterInOut *outputs = NULL, *inputs = NULL;
-
- if (filtergraph) {
- outputs = avfilter_inout_alloc();
- inputs = avfilter_inout_alloc();
- if (!outputs || !inputs) {
- ret = AVERROR(ENOMEM);
- goto fail;
- }
-
- outputs->name = av_strdup("in");
- outputs->filter_ctx = source_ctx;
- outputs->pad_idx = 0;
- outputs->next = NULL;
-
- inputs->name = av_strdup("out");
- inputs->filter_ctx = sink_ctx;
- inputs->pad_idx = 0;
- inputs->next = NULL;
-
- if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
- goto fail;
- } else {
- if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
- goto fail;
- }
-
- /* Reorder the filters to ensure that inputs of the custom filters are merged first */
- for (i = 0; i < graph->nb_filters - nb_filters; i++)
- FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
-
- ret = avfilter_graph_config(graph, NULL);
- fail:
- avfilter_inout_free(&outputs);
- avfilter_inout_free(&inputs);
- return ret;
- }
-
- static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
- {
- enum AVPixelFormat pix_fmts[FF_ARRAY_ELEMS(sdl_texture_format_map)];
- char sws_flags_str[512] = "";
- char buffersrc_args[256];
- int ret;
- AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
- AVCodecParameters *codecpar = is->video_st->codecpar;
- AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
- AVDictionaryEntry *e = NULL;
- int nb_pix_fmts = 0;
- int i, j;
-
- for (i = 0; i < renderer_info.num_texture_formats; i++) {
- for (j = 0; j < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; j++) {
- if (renderer_info.texture_formats[i] == sdl_texture_format_map[j].texture_fmt) {
- pix_fmts[nb_pix_fmts++] = sdl_texture_format_map[j].format;
- break;
- }
- }
- }
- pix_fmts[nb_pix_fmts] = AV_PIX_FMT_NONE;
-
- while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
- if (!strcmp(e->key, "sws_flags")) {
- av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
- } else
- av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
- }
- if (strlen(sws_flags_str))
- sws_flags_str[strlen(sws_flags_str)-1] = '\0';
-
- graph->scale_sws_opts = av_strdup(sws_flags_str);
-
- snprintf(buffersrc_args, sizeof(buffersrc_args),
- "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
- frame->width, frame->height, frame->format,
- is->video_st->time_base.num, is->video_st->time_base.den,
- codecpar->sample_aspect_ratio.num, FFMAX(codecpar->sample_aspect_ratio.den, 1));
- if (fr.num && fr.den)
- av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
-
- if ((ret = avfilter_graph_create_filter(&filt_src,
- avfilter_get_by_name("buffer"),
- "ffplay_buffer", buffersrc_args, NULL,
- graph)) < 0)
- goto fail;
-
- ret = avfilter_graph_create_filter(&filt_out,
- avfilter_get_by_name("buffersink"),
- "ffplay_buffersink", NULL, NULL, graph);
- if (ret < 0)
- goto fail;
-
- if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts, AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
- goto fail;
-
- last_filter = filt_out;
-
- /* Note: this macro adds a filter before the lastly added filter, so the
- * processing order of the filters is in reverse */
- #define INSERT_FILT(name, arg) do { \
- AVFilterContext *filt_ctx; \
- \
- ret = avfilter_graph_create_filter(&filt_ctx, \
- avfilter_get_by_name(name), \
- "ffplay_" name, arg, NULL, graph); \
- if (ret < 0) \
- goto fail; \
- \
- ret = avfilter_link(filt_ctx, 0, last_filter, 0); \
- if (ret < 0) \
- goto fail; \
- \
- last_filter = filt_ctx; \
- } while (0)
-
- if (autorotate) {
- double theta = get_rotation(is->video_st);
-
- if (fabs(theta - 90) < 1.0) {
- INSERT_FILT("transpose", "clock");
- } else if (fabs(theta - 180) < 1.0) {
- INSERT_FILT("hflip", NULL);
- INSERT_FILT("vflip", NULL);
- } else if (fabs(theta - 270) < 1.0) {
- INSERT_FILT("transpose", "cclock");
- } else if (fabs(theta) > 1.0) {
- char rotate_buf[64];
- snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
- INSERT_FILT("rotate", rotate_buf);
- }
- }
-
- if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
- goto fail;
-
- is->in_video_filter = filt_src;
- is->out_video_filter = filt_out;
-
- fail:
- return ret;
- }
-
- static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
- {
- static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
- int sample_rates[2] = { 0, -1 };
- int64_t channel_layouts[2] = { 0, -1 };
- int channels[2] = { 0, -1 };
- AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
- char aresample_swr_opts[512] = "";
- AVDictionaryEntry *e = NULL;
- char asrc_args[256];
- int ret;
-
- avfilter_graph_free(&is->agraph);
- if (!(is->agraph = avfilter_graph_alloc()))
- return AVERROR(ENOMEM);
- is->agraph->nb_threads = filter_nbthreads;
-
- while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
- av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
- if (strlen(aresample_swr_opts))
- aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
- av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
-
- ret = snprintf(asrc_args, sizeof(asrc_args),
- "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
- is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
- is->audio_filter_src.channels,
- 1, is->audio_filter_src.freq);
- if (is->audio_filter_src.channel_layout)
- snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
- ":channel_layout=0x%"PRIx64, is->audio_filter_src.channel_layout);
-
- ret = avfilter_graph_create_filter(&filt_asrc,
- avfilter_get_by_name("abuffer"), "ffplay_abuffer",
- asrc_args, NULL, is->agraph);
- if (ret < 0)
- goto end;
-
-
- ret = avfilter_graph_create_filter(&filt_asink,
- avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
- NULL, NULL, is->agraph);
- if (ret < 0)
- goto end;
-
- if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts, AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
- goto end;
- if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
- goto end;
-
- if (force_output_format) {
- channel_layouts[0] = is->audio_tgt.channel_layout;
- channels [0] = is->audio_tgt.channel_layout ? -1 : is->audio_tgt.channels;
- sample_rates [0] = is->audio_tgt.freq;
- if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
- goto end;
- if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts, -1, AV_OPT_SEARCH_CHILDREN)) < 0)
- goto end;
- if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels , -1, AV_OPT_SEARCH_CHILDREN)) < 0)
- goto end;
- if ((ret = av_opt_set_int_list(filt_asink, "sample_rates" , sample_rates , -1, AV_OPT_SEARCH_CHILDREN)) < 0)
- goto end;
- }
-
-
- if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
- goto end;
-
- is->in_audio_filter = filt_asrc;
- is->out_audio_filter = filt_asink;
-
- end:
- if (ret < 0)
- avfilter_graph_free(&is->agraph);
- return ret;
- }
- #endif /* CONFIG_AVFILTER */
-
- static int audio_thread(void *arg)
- {
- VideoState *is = arg;
- AVFrame *frame = av_frame_alloc();
- Frame *af;
- #if CONFIG_AVFILTER
- int last_serial = -1;
- int64_t dec_channel_layout;
- int reconfigure;
- #endif
- int got_frame = 0;
- AVRational tb;
- int ret = 0;
-
- if (!frame)
- return AVERROR(ENOMEM);
-
- do {
- if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
- goto the_end;
-
- if (got_frame) {
- tb = (AVRational){1, frame->sample_rate};
-
- #if CONFIG_AVFILTER
- dec_channel_layout = get_valid_channel_layout(frame->channel_layout, frame->channels);
-
- reconfigure =
- cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
- frame->format, frame->channels) ||
- is->audio_filter_src.channel_layout != dec_channel_layout ||
- is->audio_filter_src.freq != frame->sample_rate ||
- is->auddec.pkt_serial != last_serial;
-
- if (reconfigure) {
- char buf1[1024], buf2[1024];
- av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
- av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
- av_log(NULL, AV_LOG_DEBUG,
- "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
- is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
- frame->sample_rate, frame->channels, av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
-
- is->audio_filter_src.fmt = frame->format;
- is->audio_filter_src.channels = frame->channels;
- is->audio_filter_src.channel_layout = dec_channel_layout;
- is->audio_filter_src.freq = frame->sample_rate;
- last_serial = is->auddec.pkt_serial;
-
- if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
- goto the_end;
- }
-
- if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
- goto the_end;
-
- while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
- tb = av_buffersink_get_time_base(is->out_audio_filter);
- #endif
- if (!(af = frame_queue_peek_writable(&is->sampq)))
- goto the_end;
-
- af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
- af->pos = frame->pkt_pos;
- af->serial = is->auddec.pkt_serial;
- af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
-
- av_frame_move_ref(af->frame, frame);
- frame_queue_push(&is->sampq);
-
- #if CONFIG_AVFILTER
- if (is->audioq.serial != is->auddec.pkt_serial)
- break;
- }
- if (ret == AVERROR_EOF)
- is->auddec.finished = is->auddec.pkt_serial;
- #endif
- }
- } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
- the_end:
- #if CONFIG_AVFILTER
- avfilter_graph_free(&is->agraph);
- #endif
- av_frame_free(&frame);
- return ret;
- }
-
- static int decoder_start(Decoder *d, int (*fn)(void *), const char *thread_name, void* arg)
- {
- packet_queue_start(d->queue);
- d->decoder_tid = SDL_CreateThread(fn, thread_name, arg);
- if (!d->decoder_tid) {
- av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
- return AVERROR(ENOMEM);
- }
- return 0;
- }
-
- static int video_thread(void *arg)
- {
- VideoState *is = arg;
- AVFrame *frame = av_frame_alloc();
- double pts;
- double duration;
- int ret;
- AVRational tb = is->video_st->time_base;
- AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
-
- #if CONFIG_AVFILTER
- AVFilterGraph *graph = NULL;
- AVFilterContext *filt_out = NULL, *filt_in = NULL;
- int last_w = 0;
- int last_h = 0;
- enum AVPixelFormat last_format = -2;
- int last_serial = -1;
- int last_vfilter_idx = 0;
- #endif
-
- if (!frame)
- return AVERROR(ENOMEM);
-
- for (;;) {
- ret = get_video_frame(is, frame);
- if (ret < 0)
- goto the_end;
- if (!ret)
- continue;
-
- #if CONFIG_AVFILTER
- if ( last_w != frame->width
- || last_h != frame->height
- || last_format != frame->format
- || last_serial != is->viddec.pkt_serial
- || last_vfilter_idx != is->vfilter_idx) {
- av_log(NULL, AV_LOG_DEBUG,
- "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
- last_w, last_h,
- (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
- frame->width, frame->height,
- (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
- avfilter_graph_free(&graph);
- graph = avfilter_graph_alloc();
- if (!graph) {
- ret = AVERROR(ENOMEM);
- goto the_end;
- }
- graph->nb_threads = filter_nbthreads;
- if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
- SDL_Event event;
- event.type = FF_QUIT_EVENT;
- event.user.data1 = is;
- SDL_PushEvent(&event);
- goto the_end;
- }
- filt_in = is->in_video_filter;
- filt_out = is->out_video_filter;
- last_w = frame->width;
- last_h = frame->height;
- last_format = frame->format;
- last_serial = is->viddec.pkt_serial;
- last_vfilter_idx = is->vfilter_idx;
- frame_rate = av_buffersink_get_frame_rate(filt_out);
- }
-
- ret = av_buffersrc_add_frame(filt_in, frame);
- if (ret < 0)
- goto the_end;
-
- while (ret >= 0) {
- is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
-
- ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
- if (ret < 0) {
- if (ret == AVERROR_EOF)
- is->viddec.finished = is->viddec.pkt_serial;
- ret = 0;
- break;
- }
-
- is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
- if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
- is->frame_last_filter_delay = 0;
- tb = av_buffersink_get_time_base(filt_out);
- #endif
- duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
- pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
- ret = queue_picture(is, frame, pts, duration, frame->pkt_pos, is->viddec.pkt_serial);
- av_frame_unref(frame);
- #if CONFIG_AVFILTER
- if (is->videoq.serial != is->viddec.pkt_serial)
- break;
- }
- #endif
-
- if (ret < 0)
- goto the_end;
- }
- the_end:
- #if CONFIG_AVFILTER
- avfilter_graph_free(&graph);
- #endif
- av_frame_free(&frame);
- return 0;
- }
-
- static int subtitle_thread(void *arg)
- {
- VideoState *is = arg;
- Frame *sp;
- int got_subtitle;
- double pts;
-
- for (;;) {
- if (!(sp = frame_queue_peek_writable(&is->subpq)))
- return 0;
-
- if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
- break;
-
- pts = 0;
-
- if (got_subtitle && sp->sub.format == 0) {
- if (sp->sub.pts != AV_NOPTS_VALUE)
- pts = sp->sub.pts / (double)AV_TIME_BASE;
- sp->pts = pts;
- sp->serial = is->subdec.pkt_serial;
- sp->width = is->subdec.avctx->width;
- sp->height = is->subdec.avctx->height;
- sp->uploaded = 0;
-
- /* now we can update the picture count */
- frame_queue_push(&is->subpq);
- } else if (got_subtitle) {
- avsubtitle_free(&sp->sub);
- }
- }
- return 0;
- }
-
- /* copy samples for viewing in editor window */
- static void update_sample_display(VideoState *is, short *samples, int samples_size)
- {
- int size, len;
-
- size = samples_size / sizeof(short);
- while (size > 0) {
- len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
- if (len > size)
- len = size;
- memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
- samples += len;
- is->sample_array_index += len;
- if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
- is->sample_array_index = 0;
- size -= len;
- }
- }
-
- /* return the wanted number of samples to get better sync if sync_type is video
- * or external master clock */
- static int synchronize_audio(VideoState *is, int nb_samples)
- {
- int wanted_nb_samples = nb_samples;
-
- /* if not master, then we try to remove or add samples to correct the clock */
- if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
- double diff, avg_diff;
- int min_nb_samples, max_nb_samples;
-
- diff = get_clock(&is->audclk) - get_master_clock(is);
-
- if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
- is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
- if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
- /* not enough measures to have a correct estimate */
- is->audio_diff_avg_count++;
- } else {
- /* estimate the A-V difference */
- avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
-
- if (fabs(avg_diff) >= is->audio_diff_threshold) {
- wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
- min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
- max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
- wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
- }
- av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
- diff, avg_diff, wanted_nb_samples - nb_samples,
- is->audio_clock, is->audio_diff_threshold);
- }
- } else {
- /* too big difference : may be initial PTS errors, so
- reset A-V filter */
- is->audio_diff_avg_count = 0;
- is->audio_diff_cum = 0;
- }
- }
-
- return wanted_nb_samples;
- }
-
- /**
- * Decode one audio frame and return its uncompressed size.
- *
- * The processed audio frame is decoded, converted if required, and
- * stored in is->audio_buf, with size in bytes given by the return
- * value.
- */
- static int audio_decode_frame(VideoState *is)
- {
- int data_size, resampled_data_size;
- int64_t dec_channel_layout;
- av_unused double audio_clock0;
- int wanted_nb_samples;
- Frame *af;
-
- if (is->paused)
- return -1;
-
- do {
- #if defined(_WIN32)
- while (frame_queue_nb_remaining(&is->sampq) == 0) {
- if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
- return -1;
- av_usleep (1000);
- }
- #endif
- if (!(af = frame_queue_peek_readable(&is->sampq)))
- return -1;
- frame_queue_next(&is->sampq);
- } while (af->serial != is->audioq.serial);
-
- data_size = av_samples_get_buffer_size(NULL, af->frame->channels,
- af->frame->nb_samples,
- af->frame->format, 1);
-
- dec_channel_layout =
- (af->frame->channel_layout && af->frame->channels == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
- af->frame->channel_layout : av_get_default_channel_layout(af->frame->channels);
- wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
-
- if (af->frame->format != is->audio_src.fmt ||
- dec_channel_layout != is->audio_src.channel_layout ||
- af->frame->sample_rate != is->audio_src.freq ||
- (wanted_nb_samples != af->frame->nb_samples && !is->swr_ctx)) {
- swr_free(&is->swr_ctx);
- is->swr_ctx = swr_alloc_set_opts(NULL,
- is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
- dec_channel_layout, af->frame->format, af->frame->sample_rate,
- 0, NULL);
- if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
- av_log(NULL, AV_LOG_ERROR,
- "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
- af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), af->frame->channels,
- is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
- swr_free(&is->swr_ctx);
- return -1;
- }
- is->audio_src.channel_layout = dec_channel_layout;
- is->audio_src.channels = af->frame->channels;
- is->audio_src.freq = af->frame->sample_rate;
- is->audio_src.fmt = af->frame->format;
- }
-
- if (is->swr_ctx) {
- const uint8_t **in = (const uint8_t **)af->frame->extended_data;
- uint8_t **out = &is->audio_buf1;
- int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
- int out_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
- int len2;
- if (out_size < 0) {
- av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
- return -1;
- }
- if (wanted_nb_samples != af->frame->nb_samples) {
- if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
- wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
- av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
- return -1;
- }
- }
- av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
- if (!is->audio_buf1)
- return AVERROR(ENOMEM);
- len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
- if (len2 < 0) {
- av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
- return -1;
- }
- if (len2 == out_count) {
- av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
- if (swr_init(is->swr_ctx) < 0)
- swr_free(&is->swr_ctx);
- }
- is->audio_buf = is->audio_buf1;
- resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
- } else {
- is->audio_buf = af->frame->data[0];
- resampled_data_size = data_size;
- }
-
- audio_clock0 = is->audio_clock;
- /* update the audio clock with the pts */
- if (!isnan(af->pts))
- is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
- else
- is->audio_clock = NAN;
- is->audio_clock_serial = af->serial;
- #ifdef DEBUG
- {
- static double last_clock;
- printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
- is->audio_clock - last_clock,
- is->audio_clock, audio_clock0);
- last_clock = is->audio_clock;
- }
- #endif
- return resampled_data_size;
- }
-
- /* prepare a new audio buffer */
- static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
- {
- VideoState *is = opaque;
- int audio_size, len1;
-
- audio_callback_time = av_gettime_relative();
-
- while (len > 0) {
- if (is->audio_buf_index >= is->audio_buf_size) {
- audio_size = audio_decode_frame(is);
- if (audio_size < 0) {
- /* if error, just output silence */
- is->audio_buf = NULL;
- is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
- } else {
- if (is->show_mode != SHOW_MODE_VIDEO)
- update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
- is->audio_buf_size = audio_size;
- }
- is->audio_buf_index = 0;
- }
- len1 = is->audio_buf_size - is->audio_buf_index;
- if (len1 > len)
- len1 = len;
- if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
- memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
- else {
- memset(stream, 0, len1);
- if (!is->muted && is->audio_buf)
- SDL_MixAudioFormat(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, AUDIO_S16SYS, len1, is->audio_volume);
- }
- len -= len1;
- stream += len1;
- is->audio_buf_index += len1;
- }
- is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
- /* Let's assume the audio driver that is used by SDL has two periods. */
- if (!isnan(is->audio_clock)) {
- set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
- sync_clock_to_slave(&is->extclk, &is->audclk);
- }
- }
-
- static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
- {
- SDL_AudioSpec wanted_spec, spec;
- const char *env;
- static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
- static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
- int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
-
- env = SDL_getenv("SDL_AUDIO_CHANNELS");
- if (env) {
- wanted_nb_channels = atoi(env);
- wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
- }
- if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
- wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
- wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
- }
- wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
- wanted_spec.channels = wanted_nb_channels;
- wanted_spec.freq = wanted_sample_rate;
- if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
- av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
- return -1;
- }
- while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
- next_sample_rate_idx--;
- wanted_spec.format = AUDIO_S16SYS;
- wanted_spec.silence = 0;
- wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
- wanted_spec.callback = sdl_audio_callback;
- wanted_spec.userdata = opaque;
- while (!(audio_dev = SDL_OpenAudioDevice(NULL, 0, &wanted_spec, &spec, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE | SDL_AUDIO_ALLOW_CHANNELS_CHANGE))) {
- av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
- wanted_spec.channels, wanted_spec.freq, SDL_GetError());
- wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
- if (!wanted_spec.channels) {
- wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
- wanted_spec.channels = wanted_nb_channels;
- if (!wanted_spec.freq) {
- av_log(NULL, AV_LOG_ERROR,
- "No more combinations to try, audio open failed\n");
- return -1;
- }
- }
- wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
- }
- if (spec.format != AUDIO_S16SYS) {
- av_log(NULL, AV_LOG_ERROR,
- "SDL advised audio format %d is not supported!\n", spec.format);
- return -1;
- }
- if (spec.channels != wanted_spec.channels) {
- wanted_channel_layout = av_get_default_channel_layout(spec.channels);
- if (!wanted_channel_layout) {
- av_log(NULL, AV_LOG_ERROR,
- "SDL advised channel count %d is not supported!\n", spec.channels);
- return -1;
- }
- }
-
- audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
- audio_hw_params->freq = spec.freq;
- audio_hw_params->channel_layout = wanted_channel_layout;
- audio_hw_params->channels = spec.channels;
- audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
- audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
- if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
- av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
- return -1;
- }
- return spec.size;
- }
-
- /* open a given stream. Return 0 if OK */
- static int stream_component_open(VideoState *is, int stream_index)
- {
- AVFormatContext *ic = is->ic;
- AVCodecContext *avctx;
- const AVCodec *codec;
- const char *forced_codec_name = NULL;
- AVDictionary *opts = NULL;
- AVDictionaryEntry *t = NULL;
- int sample_rate, nb_channels;
- int64_t channel_layout;
- int ret = 0;
- int stream_lowres = lowres;
-
- if (stream_index < 0 || stream_index >= ic->nb_streams)
- return -1;
-
- avctx = avcodec_alloc_context3(NULL);
- if (!avctx)
- return AVERROR(ENOMEM);
-
- ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
- if (ret < 0)
- goto fail;
- avctx->pkt_timebase = ic->streams[stream_index]->time_base;
-
- codec = avcodec_find_decoder(avctx->codec_id);
-
- switch(avctx->codec_type){
- case AVMEDIA_TYPE_AUDIO : is->last_audio_stream = stream_index; forced_codec_name = audio_codec_name; break;
- case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
- case AVMEDIA_TYPE_VIDEO : is->last_video_stream = stream_index; forced_codec_name = video_codec_name; break;
- }
- if (forced_codec_name)
- codec = avcodec_find_decoder_by_name(forced_codec_name);
- if (!codec) {
- if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
- "No codec could be found with name '%s'\n", forced_codec_name);
- else av_log(NULL, AV_LOG_WARNING,
- "No decoder could be found for codec %s\n", avcodec_get_name(avctx->codec_id));
- ret = AVERROR(EINVAL);
- goto fail;
- }
-
- avctx->codec_id = codec->id;
- if (stream_lowres > codec->max_lowres) {
- av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
- codec->max_lowres);
- stream_lowres = codec->max_lowres;
- }
- avctx->lowres = stream_lowres;
-
- if (fast)
- avctx->flags2 |= AV_CODEC_FLAG2_FAST;
-
- opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
- if (!av_dict_get(opts, "threads", NULL, 0))
- av_dict_set(&opts, "threads", "auto", 0);
- if (stream_lowres)
- av_dict_set_int(&opts, "lowres", stream_lowres, 0);
- if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
- goto fail;
- }
- if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
- av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
- ret = AVERROR_OPTION_NOT_FOUND;
- goto fail;
- }
-
- is->eof = 0;
- ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
- switch (avctx->codec_type) {
- case AVMEDIA_TYPE_AUDIO:
- #if CONFIG_AVFILTER
- {
- AVFilterContext *sink;
-
- is->audio_filter_src.freq = avctx->sample_rate;
- is->audio_filter_src.channels = avctx->channels;
- is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
- is->audio_filter_src.fmt = avctx->sample_fmt;
- if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
- goto fail;
- sink = is->out_audio_filter;
- sample_rate = av_buffersink_get_sample_rate(sink);
- nb_channels = av_buffersink_get_channels(sink);
- channel_layout = av_buffersink_get_channel_layout(sink);
- }
- #else
- sample_rate = avctx->sample_rate;
- nb_channels = avctx->channels;
- channel_layout = avctx->channel_layout;
- #endif
-
- /* prepare audio output */
- if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
- goto fail;
- is->audio_hw_buf_size = ret;
- is->audio_src = is->audio_tgt;
- is->audio_buf_size = 0;
- is->audio_buf_index = 0;
-
- /* init averaging filter */
- is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
- is->audio_diff_avg_count = 0;
- /* since we do not have a precise anough audio FIFO fullness,
- we correct audio sync only if larger than this threshold */
- is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
-
- is->audio_stream = stream_index;
- is->audio_st = ic->streams[stream_index];
-
- if ((ret = decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread)) < 0)
- goto fail;
- if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
- is->auddec.start_pts = is->audio_st->start_time;
- is->auddec.start_pts_tb = is->audio_st->time_base;
- }
- if ((ret = decoder_start(&is->auddec, audio_thread, "audio_decoder", is)) < 0)
- goto out;
- SDL_PauseAudioDevice(audio_dev, 0);
- break;
- case AVMEDIA_TYPE_VIDEO:
- is->video_stream = stream_index;
- is->video_st = ic->streams[stream_index];
-
- if ((ret = decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread)) < 0)
- goto fail;
- if ((ret = decoder_start(&is->viddec, video_thread, "video_decoder", is)) < 0)
- goto out;
- is->queue_attachments_req = 1;
- break;
- case AVMEDIA_TYPE_SUBTITLE:
- is->subtitle_stream = stream_index;
- is->subtitle_st = ic->streams[stream_index];
-
- if ((ret = decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread)) < 0)
- goto fail;
- if ((ret = decoder_start(&is->subdec, subtitle_thread, "subtitle_decoder", is)) < 0)
- goto out;
- break;
- default:
- break;
- }
- goto out;
-
- fail:
- avcodec_free_context(&avctx);
- out:
- av_dict_free(&opts);
-
- return ret;
- }
-
- static int decode_interrupt_cb(void *ctx)
- {
- VideoState *is = ctx;
- return is->abort_request;
- }
-
- static int stream_has_enough_packets(AVStream *st, int stream_id, PacketQueue *queue) {
- return stream_id < 0 ||
- queue->abort_request ||
- (st->disposition & AV_DISPOSITION_ATTACHED_PIC) ||
- queue->nb_packets > MIN_FRAMES && (!queue->duration || av_q2d(st->time_base) * queue->duration > 1.0);
- }
-
- static int is_realtime(AVFormatContext *s)
- {
- if( !strcmp(s->iformat->name, "rtp")
- || !strcmp(s->iformat->name, "rtsp")
- || !strcmp(s->iformat->name, "sdp")
- )
- return 1;
-
- if(s->pb && ( !strncmp(s->url, "rtp:", 4)
- || !strncmp(s->url, "udp:", 4)
- )
- )
- return 1;
- return 0;
- }
-
- /* this thread gets the stream from the disk or the network */
- static int read_thread(void *arg)
- {
- VideoState *is = arg;
- AVFormatContext *ic = NULL;
- int err, i, ret;
- int st_index[AVMEDIA_TYPE_NB];
- AVPacket *pkt = NULL;
- int64_t stream_start_time;
- int pkt_in_play_range = 0;
- AVDictionaryEntry *t;
- SDL_mutex *wait_mutex = SDL_CreateMutex();
- int scan_all_pmts_set = 0;
- int64_t pkt_ts;
-
- if (!wait_mutex) {
- av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
- ret = AVERROR(ENOMEM);
- goto fail;
- }
-
- memset(st_index, -1, sizeof(st_index));
- is->eof = 0;
-
- pkt = av_packet_alloc();
- if (!pkt) {
- av_log(NULL, AV_LOG_FATAL, "Could not allocate packet.\n");
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- ic = avformat_alloc_context();
- if (!ic) {
- av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
- ret = AVERROR(ENOMEM);
- goto fail;
- }
- ic->interrupt_callback.callback = decode_interrupt_cb;
- ic->interrupt_callback.opaque = is;
- if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
- av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
- scan_all_pmts_set = 1;
- }
- err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
- if (err < 0) {
- print_error(is->filename, err);
- ret = -1;
- goto fail;
- }
- if (scan_all_pmts_set)
- av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
-
- if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
- av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
- ret = AVERROR_OPTION_NOT_FOUND;
- goto fail;
- }
- is->ic = ic;
-
- if (genpts)
- ic->flags |= AVFMT_FLAG_GENPTS;
-
- av_format_inject_global_side_data(ic);
-
- if (find_stream_info) {
- AVDictionary **opts = setup_find_stream_info_opts(ic, codec_opts);
- int orig_nb_streams = ic->nb_streams;
-
- err = avformat_find_stream_info(ic, opts);
-
- for (i = 0; i < orig_nb_streams; i++)
- av_dict_free(&opts[i]);
- av_freep(&opts);
-
- if (err < 0) {
- av_log(NULL, AV_LOG_WARNING,
- "%s: could not find codec parameters\n", is->filename);
- ret = -1;
- goto fail;
- }
- }
-
- if (ic->pb)
- ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
-
- if (seek_by_bytes < 0)
- seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
-
- is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
-
- if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
- window_title = av_asprintf("%s - %s", t->value, input_filename);
-
- /* if seeking requested, we execute it */
- if (start_time != AV_NOPTS_VALUE) {
- int64_t timestamp;
-
- timestamp = start_time;
- /* add the stream start time */
- if (ic->start_time != AV_NOPTS_VALUE)
- timestamp += ic->start_time;
- ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
- if (ret < 0) {
- av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
- is->filename, (double)timestamp / AV_TIME_BASE);
- }
- }
-
- is->realtime = is_realtime(ic);
-
- if (show_status)
- av_dump_format(ic, 0, is->filename, 0);
-
- for (i = 0; i < ic->nb_streams; i++) {
- AVStream *st = ic->streams[i];
- enum AVMediaType type = st->codecpar->codec_type;
- st->discard = AVDISCARD_ALL;
- if (type >= 0 && wanted_stream_spec[type] && st_index[type] == -1)
- if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
- st_index[type] = i;
- }
- for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
- if (wanted_stream_spec[i] && st_index[i] == -1) {
- av_log(NULL, AV_LOG_ERROR, "Stream specifier %s does not match any %s stream\n", wanted_stream_spec[i], av_get_media_type_string(i));
- st_index[i] = INT_MAX;
- }
- }
-
- if (!video_disable)
- st_index[AVMEDIA_TYPE_VIDEO] =
- av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
- st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
- if (!audio_disable)
- st_index[AVMEDIA_TYPE_AUDIO] =
- av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
- st_index[AVMEDIA_TYPE_AUDIO],
- st_index[AVMEDIA_TYPE_VIDEO],
- NULL, 0);
- if (!video_disable && !subtitle_disable)
- st_index[AVMEDIA_TYPE_SUBTITLE] =
- av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
- st_index[AVMEDIA_TYPE_SUBTITLE],
- (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
- st_index[AVMEDIA_TYPE_AUDIO] :
- st_index[AVMEDIA_TYPE_VIDEO]),
- NULL, 0);
-
- is->show_mode = show_mode;
- if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
- AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
- AVCodecParameters *codecpar = st->codecpar;
- AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
- if (codecpar->width)
- set_default_window_size(codecpar->width, codecpar->height, sar);
- }
-
- /* open the streams */
- if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
- stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
- }
-
- ret = -1;
- if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
- ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
- }
- if (is->show_mode == SHOW_MODE_NONE)
- is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
-
- if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
- stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
- }
-
- if (is->video_stream < 0 && is->audio_stream < 0) {
- av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
- is->filename);
- ret = -1;
- goto fail;
- }
-
- if (infinite_buffer < 0 && is->realtime)
- infinite_buffer = 1;
-
- for (;;) {
- if (is->abort_request)
- break;
- if (is->paused != is->last_paused) {
- is->last_paused = is->paused;
- if (is->paused)
- is->read_pause_return = av_read_pause(ic);
- else
- av_read_play(ic);
- }
- #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
- if (is->paused &&
- (!strcmp(ic->iformat->name, "rtsp") ||
- (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
- /* wait 10 ms to avoid trying to get another packet */
- /* XXX: horrible */
- SDL_Delay(10);
- continue;
- }
- #endif
- if (is->seek_req) {
- int64_t seek_target = is->seek_pos;
- int64_t seek_min = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
- int64_t seek_max = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
- // FIXME the +-2 is due to rounding being not done in the correct direction in generation
- // of the seek_pos/seek_rel variables
-
- ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
- if (ret < 0) {
- av_log(NULL, AV_LOG_ERROR,
- "%s: error while seeking\n", is->ic->url);
- } else {
- if (is->audio_stream >= 0)
- packet_queue_flush(&is->audioq);
- if (is->subtitle_stream >= 0)
- packet_queue_flush(&is->subtitleq);
- if (is->video_stream >= 0)
- packet_queue_flush(&is->videoq);
- if (is->seek_flags & AVSEEK_FLAG_BYTE) {
- set_clock(&is->extclk, NAN, 0);
- } else {
- set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
- }
- }
- is->seek_req = 0;
- is->queue_attachments_req = 1;
- is->eof = 0;
- if (is->paused)
- step_to_next_frame(is);
- }
- if (is->queue_attachments_req) {
- if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
- if ((ret = av_packet_ref(pkt, &is->video_st->attached_pic)) < 0)
- goto fail;
- packet_queue_put(&is->videoq, pkt);
- packet_queue_put_nullpacket(&is->videoq, pkt, is->video_stream);
- }
- is->queue_attachments_req = 0;
- }
-
- /* if the queue are full, no need to read more */
- if (infinite_buffer<1 &&
- (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
- || (stream_has_enough_packets(is->audio_st, is->audio_stream, &is->audioq) &&
- stream_has_enough_packets(is->video_st, is->video_stream, &is->videoq) &&
- stream_has_enough_packets(is->subtitle_st, is->subtitle_stream, &is->subtitleq)))) {
- /* wait 10 ms */
- SDL_LockMutex(wait_mutex);
- SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
- SDL_UnlockMutex(wait_mutex);
- continue;
- }
- if (!is->paused &&
- (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
- (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
- if (loop != 1 && (!loop || --loop)) {
- stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
- } else if (autoexit) {
- ret = AVERROR_EOF;
- goto fail;
- }
- }
- ret = av_read_frame(ic, pkt);
- if (ret < 0) {
- if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
- if (is->video_stream >= 0)
- packet_queue_put_nullpacket(&is->videoq, pkt, is->video_stream);
- if (is->audio_stream >= 0)
- packet_queue_put_nullpacket(&is->audioq, pkt, is->audio_stream);
- if (is->subtitle_stream >= 0)
- packet_queue_put_nullpacket(&is->subtitleq, pkt, is->subtitle_stream);
- is->eof = 1;
- }
- if (ic->pb && ic->pb->error) {
- if (autoexit)
- goto fail;
- else
- break;
- }
- SDL_LockMutex(wait_mutex);
- SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
- SDL_UnlockMutex(wait_mutex);
- continue;
- } else {
- is->eof = 0;
- }
- /* check if packet is in play range specified by user, then queue, otherwise discard */
- stream_start_time = ic->streams[pkt->stream_index]->start_time;
- pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
- pkt_in_play_range = duration == AV_NOPTS_VALUE ||
- (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
- av_q2d(ic->streams[pkt->stream_index]->time_base) -
- (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
- <= ((double)duration / 1000000);
- if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
- packet_queue_put(&is->audioq, pkt);
- } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
- && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
- packet_queue_put(&is->videoq, pkt);
- } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
- packet_queue_put(&is->subtitleq, pkt);
- } else {
- av_packet_unref(pkt);
- }
- }
-
- ret = 0;
- fail:
- if (ic && !is->ic)
- avformat_close_input(&ic);
-
- av_packet_free(&pkt);
- if (ret != 0) {
- SDL_Event event;
-
- event.type = FF_QUIT_EVENT;
- event.user.data1 = is;
- SDL_PushEvent(&event);
- }
- SDL_DestroyMutex(wait_mutex);
- return 0;
- }
-
- static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
- {
- VideoState *is;
-
- is = av_mallocz(sizeof(VideoState));
- if (!is)
- return NULL;
- is->last_video_stream = is->video_stream = -1;
- is->last_audio_stream = is->audio_stream = -1;
- is->last_subtitle_stream = is->subtitle_stream = -1;
- is->filename = av_strdup(filename);
- if (!is->filename)
- goto fail;
- is->iformat = iformat;
- is->ytop = 0;
- is->xleft = 0;
-
- /* start video display */
- if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
- goto fail;
- if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
- goto fail;
- if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
- goto fail;
-
- if (packet_queue_init(&is->videoq) < 0 ||
- packet_queue_init(&is->audioq) < 0 ||
- packet_queue_init(&is->subtitleq) < 0)
- goto fail;
-
- if (!(is->continue_read_thread = SDL_CreateCond())) {
- av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
- goto fail;
- }
-
- init_clock(&is->vidclk, &is->videoq.serial);
- init_clock(&is->audclk, &is->audioq.serial);
- init_clock(&is->extclk, &is->extclk.serial);
- is->audio_clock_serial = -1;
- if (startup_volume < 0)
- av_log(NULL, AV_LOG_WARNING, "-volume=%d < 0, setting to 0\n", startup_volume);
- if (startup_volume > 100)
- av_log(NULL, AV_LOG_WARNING, "-volume=%d > 100, setting to 100\n", startup_volume);
- startup_volume = av_clip(startup_volume, 0, 100);
- startup_volume = av_clip(SDL_MIX_MAXVOLUME * startup_volume / 100, 0, SDL_MIX_MAXVOLUME);
- is->audio_volume = startup_volume;
- is->muted = 0;
- is->av_sync_type = av_sync_type;
- is->read_tid = SDL_CreateThread(read_thread, "read_thread", is);
- if (!is->read_tid) {
- av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
- fail:
- stream_close(is);
- return NULL;
- }
- return is;
- }
-
- static void stream_cycle_channel(VideoState *is, int codec_type)
- {
- AVFormatContext *ic = is->ic;
- int start_index, stream_index;
- int old_index;
- AVStream *st;
- AVProgram *p = NULL;
- int nb_streams = is->ic->nb_streams;
-
- if (codec_type == AVMEDIA_TYPE_VIDEO) {
- start_index = is->last_video_stream;
- old_index = is->video_stream;
- } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
- start_index = is->last_audio_stream;
- old_index = is->audio_stream;
- } else {
- start_index = is->last_subtitle_stream;
- old_index = is->subtitle_stream;
- }
- stream_index = start_index;
-
- if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
- p = av_find_program_from_stream(ic, NULL, is->video_stream);
- if (p) {
- nb_streams = p->nb_stream_indexes;
- for (start_index = 0; start_index < nb_streams; start_index++)
- if (p->stream_index[start_index] == stream_index)
- break;
- if (start_index == nb_streams)
- start_index = -1;
- stream_index = start_index;
- }
- }
-
- for (;;) {
- if (++stream_index >= nb_streams)
- {
- if (codec_type == AVMEDIA_TYPE_SUBTITLE)
- {
- stream_index = -1;
- is->last_subtitle_stream = -1;
- goto the_end;
- }
- if (start_index == -1)
- return;
- stream_index = 0;
- }
- if (stream_index == start_index)
- return;
- st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
- if (st->codecpar->codec_type == codec_type) {
- /* check that parameters are OK */
- switch (codec_type) {
- case AVMEDIA_TYPE_AUDIO:
- if (st->codecpar->sample_rate != 0 &&
- st->codecpar->channels != 0)
- goto the_end;
- break;
- case AVMEDIA_TYPE_VIDEO:
- case AVMEDIA_TYPE_SUBTITLE:
- goto the_end;
- default:
- break;
- }
- }
- }
- the_end:
- if (p && stream_index != -1)
- stream_index = p->stream_index[stream_index];
- av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
- av_get_media_type_string(codec_type),
- old_index,
- stream_index);
-
- stream_component_close(is, old_index);
- stream_component_open(is, stream_index);
- }
-
-
- static void toggle_full_screen(VideoState *is)
- {
- is_full_screen = !is_full_screen;
- SDL_SetWindowFullscreen(window, is_full_screen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
- }
-
- static void toggle_audio_display(VideoState *is)
- {
- int next = is->show_mode;
- do {
- next = (next + 1) % SHOW_MODE_NB;
- } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
- if (is->show_mode != next) {
- is->force_refresh = 1;
- is->show_mode = next;
- }
- }
-
- static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
- double remaining_time = 0.0;
- SDL_PumpEvents();
- while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
- if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
- SDL_ShowCursor(0);
- cursor_hidden = 1;
- }
- if (remaining_time > 0.0)
- av_usleep((int64_t)(remaining_time * 1000000.0));
- remaining_time = REFRESH_RATE;
- if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
- video_refresh(is, &remaining_time);
- SDL_PumpEvents();
- }
- }
-
- static void seek_chapter(VideoState *is, int incr)
- {
- int64_t pos = get_master_clock(is) * AV_TIME_BASE;
- int i;
-
- if (!is->ic->nb_chapters)
- return;
-
- /* find the current chapter */
- for (i = 0; i < is->ic->nb_chapters; i++) {
- AVChapter *ch = is->ic->chapters[i];
- if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
- i--;
- break;
- }
- }
-
- i += incr;
- i = FFMAX(i, 0);
- if (i >= is->ic->nb_chapters)
- return;
-
- av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
- stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
- AV_TIME_BASE_Q), 0, 0);
- }
-
- /* handle an event sent by the GUI */
- static void event_loop(VideoState *cur_stream)
- {
- SDL_Event event;
- double incr, pos, frac;
-
- for (;;) {
- double x;
- refresh_loop_wait_event(cur_stream, &event);
- switch (event.type) {
- case SDL_KEYDOWN:
- if (exit_on_keydown || event.key.keysym.sym == SDLK_ESCAPE || event.key.keysym.sym == SDLK_q) {
- do_exit(cur_stream);
- break;
- }
- // If we don't yet have a window, skip all key events, because read_thread might still be initializing...
- if (!cur_stream->width)
- continue;
- switch (event.key.keysym.sym) {
- case SDLK_f:
- toggle_full_screen(cur_stream);
- cur_stream->force_refresh = 1;
- break;
- case SDLK_p:
- case SDLK_SPACE:
- toggle_pause(cur_stream);
- break;
- case SDLK_m:
- toggle_mute(cur_stream);
- break;
- case SDLK_KP_MULTIPLY:
- case SDLK_0:
- update_volume(cur_stream, 1, SDL_VOLUME_STEP);
- break;
- case SDLK_KP_DIVIDE:
- case SDLK_9:
- update_volume(cur_stream, -1, SDL_VOLUME_STEP);
- break;
- case SDLK_s: // S: Step to next frame
- step_to_next_frame(cur_stream);
- break;
- case SDLK_a:
- stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
- break;
- case SDLK_v:
- stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
- break;
- case SDLK_c:
- stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
- stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
- stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
- break;
- case SDLK_t:
- stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
- break;
- case SDLK_w:
- #if CONFIG_AVFILTER
- if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
- if (++cur_stream->vfilter_idx >= nb_vfilters)
- cur_stream->vfilter_idx = 0;
- } else {
- cur_stream->vfilter_idx = 0;
- toggle_audio_display(cur_stream);
- }
- #else
- toggle_audio_display(cur_stream);
- #endif
- break;
- case SDLK_PAGEUP:
- if (cur_stream->ic->nb_chapters <= 1) {
- incr = 600.0;
- goto do_seek;
- }
- seek_chapter(cur_stream, 1);
- break;
- case SDLK_PAGEDOWN:
- if (cur_stream->ic->nb_chapters <= 1) {
- incr = -600.0;
- goto do_seek;
- }
- seek_chapter(cur_stream, -1);
- break;
- case SDLK_LEFT:
- incr = seek_interval ? -seek_interval : -10.0;
- goto do_seek;
- case SDLK_RIGHT:
- incr = seek_interval ? seek_interval : 10.0;
- goto do_seek;
- case SDLK_UP:
- incr = 60.0;
- goto do_seek;
- case SDLK_DOWN:
- incr = -60.0;
- do_seek:
- if (seek_by_bytes) {
- pos = -1;
- if (pos < 0 && cur_stream->video_stream >= 0)
- pos = frame_queue_last_pos(&cur_stream->pictq);
- if (pos < 0 && cur_stream->audio_stream >= 0)
- pos = frame_queue_last_pos(&cur_stream->sampq);
- if (pos < 0)
- pos = avio_tell(cur_stream->ic->pb);
- if (cur_stream->ic->bit_rate)
- incr *= cur_stream->ic->bit_rate / 8.0;
- else
- incr *= 180000.0;
- pos += incr;
- stream_seek(cur_stream, pos, incr, 1);
- } else {
- pos = get_master_clock(cur_stream);
- if (isnan(pos))
- pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
- pos += incr;
- if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
- pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
- stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
- }
- break;
- default:
- break;
- }
- break;
- case SDL_MOUSEBUTTONDOWN:
- if (exit_on_mousedown) {
- do_exit(cur_stream);
- break;
- }
- if (event.button.button == SDL_BUTTON_LEFT) {
- static int64_t last_mouse_left_click = 0;
- if (av_gettime_relative() - last_mouse_left_click <= 500000) {
- toggle_full_screen(cur_stream);
- cur_stream->force_refresh = 1;
- last_mouse_left_click = 0;
- } else {
- last_mouse_left_click = av_gettime_relative();
- }
- }
- case SDL_MOUSEMOTION:
- if (cursor_hidden) {
- SDL_ShowCursor(1);
- cursor_hidden = 0;
- }
- cursor_last_shown = av_gettime_relative();
- if (event.type == SDL_MOUSEBUTTONDOWN) {
- if (event.button.button != SDL_BUTTON_RIGHT)
- break;
- x = event.button.x;
- } else {
- if (!(event.motion.state & SDL_BUTTON_RMASK))
- break;
- x = event.motion.x;
- }
- if (seek_by_bytes || cur_stream->ic->duration <= 0) {
- uint64_t size = avio_size(cur_stream->ic->pb);
- stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
- } else {
- int64_t ts;
- int ns, hh, mm, ss;
- int tns, thh, tmm, tss;
- tns = cur_stream->ic->duration / 1000000LL;
- thh = tns / 3600;
- tmm = (tns % 3600) / 60;
- tss = (tns % 60);
- frac = x / cur_stream->width;
- ns = frac * tns;
- hh = ns / 3600;
- mm = (ns % 3600) / 60;
- ss = (ns % 60);
- av_log(NULL, AV_LOG_INFO,
- "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
- hh, mm, ss, thh, tmm, tss);
- ts = frac * cur_stream->ic->duration;
- if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
- ts += cur_stream->ic->start_time;
- stream_seek(cur_stream, ts, 0, 0);
- }
- break;
- case SDL_WINDOWEVENT:
- switch (event.window.event) {
- case SDL_WINDOWEVENT_SIZE_CHANGED:
- screen_width = cur_stream->width = event.window.data1;
- screen_height = cur_stream->height = event.window.data2;
- if (cur_stream->vis_texture) {
- SDL_DestroyTexture(cur_stream->vis_texture);
- cur_stream->vis_texture = NULL;
- }
- case SDL_WINDOWEVENT_EXPOSED:
- cur_stream->force_refresh = 1;
- }
- break;
- case SDL_QUIT:
- case FF_QUIT_EVENT:
- do_exit(cur_stream);
- break;
- default:
- break;
- }
- }
- }
-
- static int opt_frame_size(void *optctx, const char *opt, const char *arg)
- {
- av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
- return opt_default(NULL, "video_size", arg);
- }
-
- static int opt_width(void *optctx, const char *opt, const char *arg)
- {
- screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
- return 0;
- }
-
- static int opt_height(void *optctx, const char *opt, const char *arg)
- {
- screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
- return 0;
- }
-
- static int opt_format(void *optctx, const char *opt, const char *arg)
- {
- file_iformat = av_find_input_format(arg);
- if (!file_iformat) {
- av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
- return AVERROR(EINVAL);
- }
- return 0;
- }
-
- static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
- {
- av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
- return opt_default(NULL, "pixel_format", arg);
- }
-
- static int opt_sync(void *optctx, const char *opt, const char *arg)
- {
- if (!strcmp(arg, "audio"))
- av_sync_type = AV_SYNC_AUDIO_MASTER;
- else if (!strcmp(arg, "video"))
- av_sync_type = AV_SYNC_VIDEO_MASTER;
- else if (!strcmp(arg, "ext"))
- av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
- else {
- av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
- exit(1);
- }
- return 0;
- }
-
- static int opt_seek(void *optctx, const char *opt, const char *arg)
- {
- start_time = parse_time_or_die(opt, arg, 1);
- return 0;
- }
-
- static int opt_duration(void *optctx, const char *opt, const char *arg)
- {
- duration = parse_time_or_die(opt, arg, 1);
- return 0;
- }
-
- static int opt_show_mode(void *optctx, const char *opt, const char *arg)
- {
- show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
- !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
- !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT :
- parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
- return 0;
- }
-
- static void opt_input_file(void *optctx, const char *filename)
- {
- if (input_filename) {
- av_log(NULL, AV_LOG_FATAL,
- "Argument '%s' provided as input filename, but '%s' was already specified.\n",
- filename, input_filename);
- exit(1);
- }
- if (!strcmp(filename, "-"))
- filename = "pipe:";
- input_filename = filename;
- }
-
- static int opt_codec(void *optctx, const char *opt, const char *arg)
- {
- const char *spec = strchr(opt, ':');
- if (!spec) {
- av_log(NULL, AV_LOG_ERROR,
- "No media specifier was specified in '%s' in option '%s'\n",
- arg, opt);
- return AVERROR(EINVAL);
- }
- spec++;
- switch (spec[0]) {
- case 'a' : audio_codec_name = arg; break;
- case 's' : subtitle_codec_name = arg; break;
- case 'v' : video_codec_name = arg; break;
- default:
- av_log(NULL, AV_LOG_ERROR,
- "Invalid media specifier '%s' in option '%s'\n", spec, opt);
- return AVERROR(EINVAL);
- }
- return 0;
- }
-
- static int dummy;
-
- static const OptionDef options[] = {
- CMDUTILS_COMMON_OPTIONS
- { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
- { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
- { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
- { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
- { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
- { "vn", OPT_BOOL, { &video_disable }, "disable video" },
- { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
- { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
- { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
- { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
- { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
- { "t", HAS_ARG, { .func_arg = opt_duration }, "play \"duration\" seconds of audio/video", "duration" },
- { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
- { "seek_interval", OPT_FLOAT | HAS_ARG, { &seek_interval }, "set seek interval for left/right keys, in seconds", "seconds" },
- { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
- { "noborder", OPT_BOOL, { &borderless }, "borderless window" },
- { "alwaysontop", OPT_BOOL, { &alwaysontop }, "window always on top" },
- { "volume", OPT_INT | HAS_ARG, { &startup_volume}, "set startup volume 0=min 100=max", "volume" },
- { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
- { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
- { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
- { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
- { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
- { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
- { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
- { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
- { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
- { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
- { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
- { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
- { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
- { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
- { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
- { "left", OPT_INT | HAS_ARG | OPT_EXPERT, { &screen_left }, "set the x position for the left of the window", "x pos" },
- { "top", OPT_INT | HAS_ARG | OPT_EXPERT, { &screen_top }, "set the y position for the top of the window", "y pos" },
- #if CONFIG_AVFILTER
- { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
- { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
- #endif
- { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
- { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
- { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
- { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
- { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
- { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &audio_codec_name }, "force audio decoder", "decoder_name" },
- { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
- { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &video_codec_name }, "force video decoder", "decoder_name" },
- { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
- { "find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
- "read and decode the streams to fill missing information with heuristics" },
- { "filter_threads", HAS_ARG | OPT_INT | OPT_EXPERT, { &filter_nbthreads }, "number of filter threads per graph" },
- { NULL, },
- };
-
- static void show_usage(void)
- {
- av_log(NULL, AV_LOG_INFO, "Simple media player\n");
- av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
- av_log(NULL, AV_LOG_INFO, "\n");
- }
-
- void show_help_default(const char *opt, const char *arg)
- {
- av_log_set_callback(log_callback_help);
- show_usage();
- show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
- show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
- printf("\n");
- show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
- show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
- #if !CONFIG_AVFILTER
- show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
- #else
- show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
- #endif
- printf("\nWhile playing:\n"
- "q, ESC quit\n"
- "f toggle full screen\n"
- "p, SPC pause\n"
- "m toggle mute\n"
- "9, 0 decrease and increase volume respectively\n"
- "/, * decrease and increase volume respectively\n"
- "a cycle audio channel in the current program\n"
- "v cycle video channel\n"
- "t cycle subtitle channel in the current program\n"
- "c cycle program\n"
- "w cycle video filters or show modes\n"
- "s activate frame-step mode\n"
- "left/right seek backward/forward 10 seconds or to custom interval if -seek_interval is set\n"
- "down/up seek backward/forward 1 minute\n"
- "page down/page up seek backward/forward 10 minutes\n"
- "right mouse click seek to percentage in file corresponding to fraction of width\n"
- "left double-click toggle full screen\n"
- );
- }
-
- /* Called from the main */
- int main(int argc, char **argv)
- {
- int flags;
- VideoState *is;
-
- init_dynload();
-
- av_log_set_flags(AV_LOG_SKIP_REPEATED);
- parse_loglevel(argc, argv, options);
-
- /* register all codecs, demux and protocols */
- #if CONFIG_AVDEVICE
- avdevice_register_all();
- #endif
- avformat_network_init();
-
- init_opts();
-
- signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
- signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
-
- show_banner(argc, argv, options);
-
- parse_options(NULL, argc, argv, options, opt_input_file);
-
- if (!input_filename) {
- show_usage();
- av_log(NULL, AV_LOG_FATAL, "An input file must be specified\n");
- av_log(NULL, AV_LOG_FATAL,
- "Use -h to get full help or, even better, run 'man %s'\n", program_name);
- exit(1);
- }
-
- if (display_disable) {
- video_disable = 1;
- }
- flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
- if (audio_disable)
- flags &= ~SDL_INIT_AUDIO;
- else {
- /* Try to work around an occasional ALSA buffer underflow issue when the
- * period size is NPOT due to ALSA resampling by forcing the buffer size. */
- if (!SDL_getenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE"))
- SDL_setenv("SDL_AUDIO_ALSA_SET_BUFFER_SIZE","1", 1);
- }
- if (display_disable)
- flags &= ~SDL_INIT_VIDEO;
- if (SDL_Init (flags)) {
- av_log(NULL, AV_LOG_FATAL, "Could not initialize SDL - %s\n", SDL_GetError());
- av_log(NULL, AV_LOG_FATAL, "(Did you set the DISPLAY variable?)\n");
- exit(1);
- }
-
- SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
- SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
-
- if (!display_disable) {
- int flags = SDL_WINDOW_HIDDEN;
- if (alwaysontop)
- #if SDL_VERSION_ATLEAST(2,0,5)
- flags |= SDL_WINDOW_ALWAYS_ON_TOP;
- #else
- av_log(NULL, AV_LOG_WARNING, "Your SDL version doesn't support SDL_WINDOW_ALWAYS_ON_TOP. Feature will be inactive.\n");
- #endif
- if (borderless)
- flags |= SDL_WINDOW_BORDERLESS;
- else
- flags |= SDL_WINDOW_RESIZABLE;
- window = SDL_CreateWindow(program_name, SDL_WINDOWPOS_UNDEFINED, SDL_WINDOWPOS_UNDEFINED, default_width, default_height, flags);
- SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
- if (window) {
- renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
- if (!renderer) {
- av_log(NULL, AV_LOG_WARNING, "Failed to initialize a hardware accelerated renderer: %s\n", SDL_GetError());
- renderer = SDL_CreateRenderer(window, -1, 0);
- }
- if (renderer) {
- if (!SDL_GetRendererInfo(renderer, &renderer_info))
- av_log(NULL, AV_LOG_VERBOSE, "Initialized %s renderer.\n", renderer_info.name);
- }
- }
- if (!window || !renderer || !renderer_info.num_texture_formats) {
- av_log(NULL, AV_LOG_FATAL, "Failed to create window or renderer: %s", SDL_GetError());
- do_exit(NULL);
- }
- }
-
- is = stream_open(input_filename, file_iformat);
- if (!is) {
- av_log(NULL, AV_LOG_FATAL, "Failed to initialize VideoState!\n");
- do_exit(NULL);
- }
-
- event_loop(is);
-
- /* never returns */
-
- return 0;
- }
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