Biurrun). Originally committed as revision 6272 to svn://svn.ffmpeg.org/ffmpeg/trunktags/v0.5
@@ -32,7 +32,7 @@ OBJS-$(CONFIG_CRC_MUXER) += crc.o | |||
OBJS-$(CONFIG_FRAMECRC_MUXER) += crc.o | |||
OBJS-$(CONFIG_DAUD_DEMUXER) += daud.o | |||
OBJS-$(CONFIG_DV_DEMUXER) += dv.o | |||
OBJS-$(CONFIG_DV_MUXER) += dv.o | |||
OBJS-$(CONFIG_DV_MUXER) += dvenc.o | |||
OBJS-$(CONFIG_EA_DEMUXER) += electronicarts.o | |||
OBJS-$(CONFIG_FFM_DEMUXER) += ffm.o | |||
OBJS-$(CONFIG_FFM_MUXER) += ffm.o | |||
@@ -42,33 +42,6 @@ struct DVDemuxContext { | |||
uint64_t abytes; | |||
}; | |||
struct DVMuxContext { | |||
const DVprofile* sys; /* Current DV profile. E.g.: 525/60, 625/50 */ | |||
int n_ast; /* Number of stereo audio streams (up to 2) */ | |||
AVStream *ast[2]; /* Stereo audio streams */ | |||
FifoBuffer audio_data[2]; /* Fifo for storing excessive amounts of PCM */ | |||
int frames; /* Number of a current frame */ | |||
time_t start_time; /* Start time of recording */ | |||
int has_audio; /* frame under contruction has audio */ | |||
int has_video; /* frame under contruction has video */ | |||
uint8_t frame_buf[DV_MAX_FRAME_SIZE]; /* frame under contruction */ | |||
}; | |||
static const int dv_aaux_packs_dist[12][9] = { | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
}; | |||
static inline uint16_t dv_audio_12to16(uint16_t sample) | |||
{ | |||
uint16_t shift, result; | |||
@@ -89,171 +62,6 @@ static inline uint16_t dv_audio_12to16(uint16_t sample) | |||
return result; | |||
} | |||
static int dv_audio_frame_size(const DVprofile* sys, int frame) | |||
{ | |||
return sys->audio_samples_dist[frame % (sizeof(sys->audio_samples_dist)/ | |||
sizeof(sys->audio_samples_dist[0]))]; | |||
} | |||
static int dv_write_pack(enum dv_pack_type pack_id, DVMuxContext *c, uint8_t* buf) | |||
{ | |||
struct tm tc; | |||
time_t ct; | |||
int ltc_frame; | |||
/* Its hard to tell what SMPTE requires w.r.t. APT, but Quicktime needs it. | |||
* We set it based on pix_fmt value but it really should be per DV profile */ | |||
int apt = (c->sys->pix_fmt == PIX_FMT_YUV422P ? 1 : 0); | |||
buf[0] = (uint8_t)pack_id; | |||
switch (pack_id) { | |||
case dv_timecode: | |||
ct = (time_t)(c->frames / ((float)c->sys->frame_rate / | |||
(float)c->sys->frame_rate_base)); | |||
brktimegm(ct, &tc); | |||
/* | |||
* LTC drop-frame frame counter drops two frames (0 and 1) every | |||
* minute, unless it is exactly divisible by 10 | |||
*/ | |||
ltc_frame = (c->frames + 2*ct/60 - 2*ct/600) % c->sys->ltc_divisor; | |||
buf[1] = (0 << 7) | /* Color fame: 0 - unsync; 1 - sync mode */ | |||
(1 << 6) | /* Drop frame timecode: 0 - nondrop; 1 - drop */ | |||
((ltc_frame / 10) << 4) | /* Tens of frames */ | |||
(ltc_frame % 10); /* Units of frames */ | |||
buf[2] = (1 << 7) | /* Biphase mark polarity correction: 0 - even; 1 - odd */ | |||
((tc.tm_sec / 10) << 4) | /* Tens of seconds */ | |||
(tc.tm_sec % 10); /* Units of seconds */ | |||
buf[3] = (1 << 7) | /* Binary group flag BGF0 */ | |||
((tc.tm_min / 10) << 4) | /* Tens of minutes */ | |||
(tc.tm_min % 10); /* Units of minutes */ | |||
buf[4] = (1 << 7) | /* Binary group flag BGF2 */ | |||
(1 << 6) | /* Binary group flag BGF1 */ | |||
((tc.tm_hour / 10) << 4) | /* Tens of hours */ | |||
(tc.tm_hour % 10); /* Units of hours */ | |||
break; | |||
case dv_audio_source: /* AAUX source pack */ | |||
buf[1] = (0 << 7) | /* locked mode */ | |||
(1 << 6) | /* reserved -- always 1 */ | |||
(dv_audio_frame_size(c->sys, c->frames) - | |||
c->sys->audio_min_samples[0]); | |||
/* # of samples */ | |||
buf[2] = (0 << 7) | /* multi-stereo */ | |||
(0 << 5) | /* #of audio channels per block: 0 -- 1 channel */ | |||
(0 << 4) | /* pair bit: 0 -- one pair of channels */ | |||
0; /* audio mode */ | |||
buf[3] = (1 << 7) | /* res */ | |||
(1 << 6) | /* multi-language flag */ | |||
(c->sys->dsf << 5) | /* system: 60fields/50fields */ | |||
(apt << 1);/* definition: 0 -- 25Mbps, 2 -- 50Mbps */ | |||
buf[4] = (1 << 7) | /* emphasis: 1 -- off */ | |||
(0 << 6) | /* emphasis time constant: 0 -- reserved */ | |||
(0 << 3) | /* frequency: 0 -- 48Khz, 1 -- 44,1Khz, 2 -- 32Khz */ | |||
0; /* quantization: 0 -- 16bit linear, 1 -- 12bit nonlinear */ | |||
break; | |||
case dv_audio_control: | |||
buf[1] = (0 << 6) | /* copy protection: 0 -- unrestricted */ | |||
(1 << 4) | /* input source: 1 -- digital input */ | |||
(3 << 2) | /* compression: 3 -- no information */ | |||
0; /* misc. info/SMPTE emphasis off */ | |||
buf[2] = (1 << 7) | /* recording start point: 1 -- no */ | |||
(1 << 6) | /* recording end point: 1 -- no */ | |||
(1 << 3) | /* recording mode: 1 -- original */ | |||
7; | |||
buf[3] = (1 << 7) | /* direction: 1 -- forward */ | |||
0x20; /* speed */ | |||
buf[4] = (1 << 7) | /* reserved -- always 1 */ | |||
0x7f; /* genre category */ | |||
break; | |||
case dv_audio_recdate: | |||
case dv_video_recdate: /* VAUX recording date */ | |||
ct = c->start_time + (time_t)(c->frames / | |||
((float)c->sys->frame_rate / (float)c->sys->frame_rate_base)); | |||
brktimegm(ct, &tc); | |||
buf[1] = 0xff; /* ds, tm, tens of time zone, units of time zone */ | |||
/* 0xff is very likely to be "unknown" */ | |||
buf[2] = (3 << 6) | /* reserved -- always 1 */ | |||
((tc.tm_mday / 10) << 4) | /* Tens of day */ | |||
(tc.tm_mday % 10); /* Units of day */ | |||
buf[3] = /* we set high 4 bits to 0, shouldn't we set them to week? */ | |||
((tc.tm_mon / 10) << 4) | /* Tens of month */ | |||
(tc.tm_mon % 10); /* Units of month */ | |||
buf[4] = (((tc.tm_year % 100) / 10) << 4) | /* Tens of year */ | |||
(tc.tm_year % 10); /* Units of year */ | |||
break; | |||
case dv_audio_rectime: /* AAUX recording time */ | |||
case dv_video_rectime: /* VAUX recording time */ | |||
ct = c->start_time + (time_t)(c->frames / | |||
((float)c->sys->frame_rate / (float)c->sys->frame_rate_base)); | |||
brktimegm(ct, &tc); | |||
buf[1] = (3 << 6) | /* reserved -- always 1 */ | |||
0x3f; /* tens of frame, units of frame: 0x3f - "unknown" ? */ | |||
buf[2] = (1 << 7) | /* reserved -- always 1 */ | |||
((tc.tm_sec / 10) << 4) | /* Tens of seconds */ | |||
(tc.tm_sec % 10); /* Units of seconds */ | |||
buf[3] = (1 << 7) | /* reserved -- always 1 */ | |||
((tc.tm_min / 10) << 4) | /* Tens of minutes */ | |||
(tc.tm_min % 10); /* Units of minutes */ | |||
buf[4] = (3 << 6) | /* reserved -- always 1 */ | |||
((tc.tm_hour / 10) << 4) | /* Tens of hours */ | |||
(tc.tm_hour % 10); /* Units of hours */ | |||
break; | |||
default: | |||
buf[1] = buf[2] = buf[3] = buf[4] = 0xff; | |||
} | |||
return 5; | |||
} | |||
static void dv_inject_audio(DVMuxContext *c, int channel, uint8_t* frame_ptr) | |||
{ | |||
int i, j, d, of, size; | |||
size = 4 * dv_audio_frame_size(c->sys, c->frames); | |||
frame_ptr += channel * c->sys->difseg_size * 150 * 80; | |||
for (i = 0; i < c->sys->difseg_size; i++) { | |||
frame_ptr += 6 * 80; /* skip DIF segment header */ | |||
for (j = 0; j < 9; j++) { | |||
dv_write_pack(dv_aaux_packs_dist[i][j], c, &frame_ptr[3]); | |||
for (d = 8; d < 80; d+=2) { | |||
of = c->sys->audio_shuffle[i][j] + (d - 8)/2 * c->sys->audio_stride; | |||
if (of*2 >= size) | |||
continue; | |||
frame_ptr[d] = fifo_peek(&c->audio_data[channel], of*2+1); // FIXME: may be we have to admit | |||
frame_ptr[d+1] = fifo_peek(&c->audio_data[channel], of*2); // that DV is a big endian PCM | |||
} | |||
frame_ptr += 16 * 80; /* 15 Video DIFs + 1 Audio DIF */ | |||
} | |||
} | |||
} | |||
static void dv_inject_metadata(DVMuxContext *c, uint8_t* frame) | |||
{ | |||
int j, k; | |||
uint8_t* buf; | |||
for (buf = frame; buf < frame + c->sys->frame_size; buf += 150 * 80) { | |||
/* DV subcode: 2nd and 3d DIFs */ | |||
for (j = 80; j < 80 * 3; j += 80) { | |||
for (k = 6; k < 6 * 8; k += 8) | |||
dv_write_pack(dv_timecode, c, &buf[j+k]); | |||
if (((long)(buf-frame)/(c->sys->frame_size/(c->sys->difseg_size*c->sys->n_difchan))%c->sys->difseg_size) > 5) { /* FIXME: is this really needed ? */ | |||
dv_write_pack(dv_video_recdate, c, &buf[j+14]); | |||
dv_write_pack(dv_video_rectime, c, &buf[j+22]); | |||
dv_write_pack(dv_video_recdate, c, &buf[j+38]); | |||
dv_write_pack(dv_video_rectime, c, &buf[j+46]); | |||
} | |||
} | |||
/* DV VAUX: 4th, 5th and 6th 3DIFs */ | |||
for (j = 80*3 + 3; j < 80*6; j += 80) { | |||
dv_write_pack(dv_video_recdate, c, &buf[j+5*2]); | |||
dv_write_pack(dv_video_rectime, c, &buf[j+5*3]); | |||
dv_write_pack(dv_video_recdate, c, &buf[j+5*11]); | |||
dv_write_pack(dv_video_rectime, c, &buf[j+5*12]); | |||
} | |||
} | |||
} | |||
/* | |||
* This is the dumbest implementation of all -- it simply looks at | |||
* a fixed offset and if pack isn't there -- fails. We might want | |||
@@ -447,139 +255,9 @@ static int dv_extract_video_info(DVDemuxContext *c, uint8_t* frame) | |||
} | |||
/* | |||
* The following 6 functions constitute our interface to the world | |||
* The following 3 functions constitute our interface to the world | |||
*/ | |||
int dv_assemble_frame(DVMuxContext *c, AVStream* st, | |||
const uint8_t* data, int data_size, uint8_t** frame) | |||
{ | |||
int i, reqasize; | |||
*frame = &c->frame_buf[0]; | |||
reqasize = 4 * dv_audio_frame_size(c->sys, c->frames); | |||
switch (st->codec->codec_type) { | |||
case CODEC_TYPE_VIDEO: | |||
/* FIXME: we have to have more sensible approach than this one */ | |||
if (c->has_video) | |||
av_log(st->codec, AV_LOG_ERROR, "Can't process DV frame #%d. Insufficient audio data or severe sync problem.\n", c->frames); | |||
memcpy(*frame, data, c->sys->frame_size); | |||
c->has_video = 1; | |||
break; | |||
case CODEC_TYPE_AUDIO: | |||
for (i = 0; i < c->n_ast && st != c->ast[i]; i++); | |||
/* FIXME: we have to have more sensible approach than this one */ | |||
if (fifo_size(&c->audio_data[i], c->audio_data[i].rptr) + data_size >= 100*AVCODEC_MAX_AUDIO_FRAME_SIZE) | |||
av_log(st->codec, AV_LOG_ERROR, "Can't process DV frame #%d. Insufficient video data or severe sync problem.\n", c->frames); | |||
fifo_write(&c->audio_data[i], data, data_size, &c->audio_data[i].wptr); | |||
/* Lets see if we've got enough audio for one DV frame */ | |||
c->has_audio |= ((reqasize <= fifo_size(&c->audio_data[i], c->audio_data[i].rptr)) << i); | |||
break; | |||
default: | |||
break; | |||
} | |||
/* Lets see if we have enough data to construct one DV frame */ | |||
if (c->has_video == 1 && c->has_audio + 1 == 1<<c->n_ast) { | |||
dv_inject_metadata(c, *frame); | |||
for (i=0; i<c->n_ast; i++) { | |||
dv_inject_audio(c, i, *frame); | |||
fifo_drain(&c->audio_data[i], reqasize); | |||
} | |||
c->has_video = 0; | |||
c->has_audio = 0; | |||
c->frames++; | |||
return c->sys->frame_size; | |||
} | |||
return 0; | |||
} | |||
DVMuxContext* dv_init_mux(AVFormatContext* s) | |||
{ | |||
DVMuxContext *c; | |||
AVStream *vst = NULL; | |||
int i; | |||
/* we support at most 1 video and 2 audio streams */ | |||
if (s->nb_streams > 3) | |||
return NULL; | |||
c = av_mallocz(sizeof(DVMuxContext)); | |||
if (!c) | |||
return NULL; | |||
c->n_ast = 0; | |||
c->ast[0] = c->ast[1] = NULL; | |||
/* We have to sort out where audio and where video stream is */ | |||
for (i=0; i<s->nb_streams; i++) { | |||
switch (s->streams[i]->codec->codec_type) { | |||
case CODEC_TYPE_VIDEO: | |||
vst = s->streams[i]; | |||
break; | |||
case CODEC_TYPE_AUDIO: | |||
c->ast[c->n_ast++] = s->streams[i]; | |||
break; | |||
default: | |||
goto bail_out; | |||
} | |||
} | |||
/* Some checks -- DV format is very picky about its incoming streams */ | |||
if (!vst || vst->codec->codec_id != CODEC_ID_DVVIDEO) | |||
goto bail_out; | |||
for (i=0; i<c->n_ast; i++) { | |||
if (c->ast[i] && (c->ast[i]->codec->codec_id != CODEC_ID_PCM_S16LE || | |||
c->ast[i]->codec->sample_rate != 48000 || | |||
c->ast[i]->codec->channels != 2)) | |||
goto bail_out; | |||
} | |||
c->sys = dv_codec_profile(vst->codec); | |||
if (!c->sys) | |||
goto bail_out; | |||
if((c->n_ast > 1) && (c->sys->n_difchan < 2)) { | |||
/* only 1 stereo pair is allowed in 25Mbps mode */ | |||
goto bail_out; | |||
} | |||
/* Ok, everything seems to be in working order */ | |||
c->frames = 0; | |||
c->has_audio = 0; | |||
c->has_video = 0; | |||
c->start_time = (time_t)s->timestamp; | |||
for (i=0; i<c->n_ast; i++) { | |||
if (c->ast[i] && fifo_init(&c->audio_data[i], 100*AVCODEC_MAX_AUDIO_FRAME_SIZE) < 0) { | |||
while (i>0) { | |||
i--; | |||
fifo_free(&c->audio_data[i]); | |||
} | |||
goto bail_out; | |||
} | |||
} | |||
return c; | |||
bail_out: | |||
av_free(c); | |||
return NULL; | |||
} | |||
void dv_delete_mux(DVMuxContext *c) | |||
{ | |||
int i; | |||
for (i=0; i < c->n_ast; i++) | |||
fifo_free(&c->audio_data[i]); | |||
} | |||
DVDemuxContext* dv_init_demux(AVFormatContext *s) | |||
{ | |||
DVDemuxContext *c; | |||
@@ -756,47 +434,6 @@ static int dv_read_close(AVFormatContext *s) | |||
return 0; | |||
} | |||
#ifdef CONFIG_MUXERS | |||
static int dv_write_header(AVFormatContext *s) | |||
{ | |||
s->priv_data = dv_init_mux(s); | |||
if (!s->priv_data) { | |||
av_log(s, AV_LOG_ERROR, "Can't initialize DV format!\n" | |||
"Make sure that you supply exactly two streams:\n" | |||
" video: 25fps or 29.97fps, audio: 2ch/48Khz/PCM\n" | |||
" (50Mbps allows an optional second audio stream)\n"); | |||
return -1; | |||
} | |||
return 0; | |||
} | |||
static int dv_write_packet(struct AVFormatContext *s, AVPacket *pkt) | |||
{ | |||
uint8_t* frame; | |||
int fsize; | |||
fsize = dv_assemble_frame((DVMuxContext *)s->priv_data, s->streams[pkt->stream_index], | |||
pkt->data, pkt->size, &frame); | |||
if (fsize > 0) { | |||
put_buffer(&s->pb, frame, fsize); | |||
put_flush_packet(&s->pb); | |||
} | |||
return 0; | |||
} | |||
/* | |||
* We might end up with some extra A/V data without matching counterpart. | |||
* E.g. video data without enough audio to write the complete frame. | |||
* Currently we simply drop the last frame. I don't know whether this | |||
* is the best strategy of all | |||
*/ | |||
static int dv_write_trailer(struct AVFormatContext *s) | |||
{ | |||
dv_delete_mux((DVMuxContext *)s->priv_data); | |||
return 0; | |||
} | |||
#endif /* CONFIG_MUXERS */ | |||
#ifdef CONFIG_DV_DEMUXER | |||
AVInputFormat dv_demuxer = { | |||
"dv", | |||
@@ -810,17 +447,3 @@ AVInputFormat dv_demuxer = { | |||
.extensions = "dv,dif", | |||
}; | |||
#endif | |||
#ifdef CONFIG_DV_MUXER | |||
AVOutputFormat dv_muxer = { | |||
"dv", | |||
"DV video format", | |||
NULL, | |||
"dv", | |||
sizeof(DVMuxContext), | |||
CODEC_ID_PCM_S16LE, | |||
CODEC_ID_DVVIDEO, | |||
dv_write_header, | |||
dv_write_packet, | |||
dv_write_trailer, | |||
}; | |||
#endif |
@@ -0,0 +1,413 @@ | |||
/* | |||
* General DV muxer/demuxer | |||
* Copyright (c) 2003 Roman Shaposhnik | |||
* | |||
* Many thanks to Dan Dennedy <dan@dennedy.org> for providing wealth | |||
* of DV technical info. | |||
* | |||
* Raw DV format | |||
* Copyright (c) 2002 Fabrice Bellard. | |||
* | |||
* 50 Mbps (DVCPRO50) support | |||
* Copyright (c) 2006 Daniel Maas <dmaas@maasdigital.com> | |||
* | |||
* This library 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 of the License, or (at your option) any later version. | |||
* | |||
* This library 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 this library; if not, write to the Free Software | |||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |||
*/ | |||
#include <time.h> | |||
#include "avformat.h" | |||
#include "dvdata.h" | |||
#include "dv.h" | |||
struct DVMuxContext { | |||
const DVprofile* sys; /* Current DV profile. E.g.: 525/60, 625/50 */ | |||
int n_ast; /* Number of stereo audio streams (up to 2) */ | |||
AVStream *ast[2]; /* Stereo audio streams */ | |||
FifoBuffer audio_data[2]; /* Fifo for storing excessive amounts of PCM */ | |||
int frames; /* Number of a current frame */ | |||
time_t start_time; /* Start time of recording */ | |||
int has_audio; /* frame under contruction has audio */ | |||
int has_video; /* frame under contruction has video */ | |||
uint8_t frame_buf[DV_MAX_FRAME_SIZE]; /* frame under contruction */ | |||
}; | |||
static const int dv_aaux_packs_dist[12][9] = { | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
{ 0xff, 0xff, 0xff, 0x50, 0x51, 0x52, 0x53, 0xff, 0xff }, | |||
{ 0x50, 0x51, 0x52, 0x53, 0xff, 0xff, 0xff, 0xff, 0xff }, | |||
}; | |||
static int dv_audio_frame_size(const DVprofile* sys, int frame) | |||
{ | |||
return sys->audio_samples_dist[frame % (sizeof(sys->audio_samples_dist)/ | |||
sizeof(sys->audio_samples_dist[0]))]; | |||
} | |||
static int dv_write_pack(enum dv_pack_type pack_id, DVMuxContext *c, uint8_t* buf) | |||
{ | |||
struct tm tc; | |||
time_t ct; | |||
int ltc_frame; | |||
/* Its hard to tell what SMPTE requires w.r.t. APT, but Quicktime needs it. | |||
* We set it based on pix_fmt value but it really should be per DV profile */ | |||
int apt = (c->sys->pix_fmt == PIX_FMT_YUV422P ? 1 : 0); | |||
buf[0] = (uint8_t)pack_id; | |||
switch (pack_id) { | |||
case dv_timecode: | |||
ct = (time_t)(c->frames / ((float)c->sys->frame_rate / | |||
(float)c->sys->frame_rate_base)); | |||
brktimegm(ct, &tc); | |||
/* | |||
* LTC drop-frame frame counter drops two frames (0 and 1) every | |||
* minute, unless it is exactly divisible by 10 | |||
*/ | |||
ltc_frame = (c->frames + 2*ct/60 - 2*ct/600) % c->sys->ltc_divisor; | |||
buf[1] = (0 << 7) | /* Color fame: 0 - unsync; 1 - sync mode */ | |||
(1 << 6) | /* Drop frame timecode: 0 - nondrop; 1 - drop */ | |||
((ltc_frame / 10) << 4) | /* Tens of frames */ | |||
(ltc_frame % 10); /* Units of frames */ | |||
buf[2] = (1 << 7) | /* Biphase mark polarity correction: 0 - even; 1 - odd */ | |||
((tc.tm_sec / 10) << 4) | /* Tens of seconds */ | |||
(tc.tm_sec % 10); /* Units of seconds */ | |||
buf[3] = (1 << 7) | /* Binary group flag BGF0 */ | |||
((tc.tm_min / 10) << 4) | /* Tens of minutes */ | |||
(tc.tm_min % 10); /* Units of minutes */ | |||
buf[4] = (1 << 7) | /* Binary group flag BGF2 */ | |||
(1 << 6) | /* Binary group flag BGF1 */ | |||
((tc.tm_hour / 10) << 4) | /* Tens of hours */ | |||
(tc.tm_hour % 10); /* Units of hours */ | |||
break; | |||
case dv_audio_source: /* AAUX source pack */ | |||
buf[1] = (0 << 7) | /* locked mode */ | |||
(1 << 6) | /* reserved -- always 1 */ | |||
(dv_audio_frame_size(c->sys, c->frames) - | |||
c->sys->audio_min_samples[0]); | |||
/* # of samples */ | |||
buf[2] = (0 << 7) | /* multi-stereo */ | |||
(0 << 5) | /* #of audio channels per block: 0 -- 1 channel */ | |||
(0 << 4) | /* pair bit: 0 -- one pair of channels */ | |||
0; /* audio mode */ | |||
buf[3] = (1 << 7) | /* res */ | |||
(1 << 6) | /* multi-language flag */ | |||
(c->sys->dsf << 5) | /* system: 60fields/50fields */ | |||
(apt << 1);/* definition: 0 -- 25Mbps, 2 -- 50Mbps */ | |||
buf[4] = (1 << 7) | /* emphasis: 1 -- off */ | |||
(0 << 6) | /* emphasis time constant: 0 -- reserved */ | |||
(0 << 3) | /* frequency: 0 -- 48Khz, 1 -- 44,1Khz, 2 -- 32Khz */ | |||
0; /* quantization: 0 -- 16bit linear, 1 -- 12bit nonlinear */ | |||
break; | |||
case dv_audio_control: | |||
buf[1] = (0 << 6) | /* copy protection: 0 -- unrestricted */ | |||
(1 << 4) | /* input source: 1 -- digital input */ | |||
(3 << 2) | /* compression: 3 -- no information */ | |||
0; /* misc. info/SMPTE emphasis off */ | |||
buf[2] = (1 << 7) | /* recording start point: 1 -- no */ | |||
(1 << 6) | /* recording end point: 1 -- no */ | |||
(1 << 3) | /* recording mode: 1 -- original */ | |||
7; | |||
buf[3] = (1 << 7) | /* direction: 1 -- forward */ | |||
0x20; /* speed */ | |||
buf[4] = (1 << 7) | /* reserved -- always 1 */ | |||
0x7f; /* genre category */ | |||
break; | |||
case dv_audio_recdate: | |||
case dv_video_recdate: /* VAUX recording date */ | |||
ct = c->start_time + (time_t)(c->frames / | |||
((float)c->sys->frame_rate / (float)c->sys->frame_rate_base)); | |||
brktimegm(ct, &tc); | |||
buf[1] = 0xff; /* ds, tm, tens of time zone, units of time zone */ | |||
/* 0xff is very likely to be "unknown" */ | |||
buf[2] = (3 << 6) | /* reserved -- always 1 */ | |||
((tc.tm_mday / 10) << 4) | /* Tens of day */ | |||
(tc.tm_mday % 10); /* Units of day */ | |||
buf[3] = /* we set high 4 bits to 0, shouldn't we set them to week? */ | |||
((tc.tm_mon / 10) << 4) | /* Tens of month */ | |||
(tc.tm_mon % 10); /* Units of month */ | |||
buf[4] = (((tc.tm_year % 100) / 10) << 4) | /* Tens of year */ | |||
(tc.tm_year % 10); /* Units of year */ | |||
break; | |||
case dv_audio_rectime: /* AAUX recording time */ | |||
case dv_video_rectime: /* VAUX recording time */ | |||
ct = c->start_time + (time_t)(c->frames / | |||
((float)c->sys->frame_rate / (float)c->sys->frame_rate_base)); | |||
brktimegm(ct, &tc); | |||
buf[1] = (3 << 6) | /* reserved -- always 1 */ | |||
0x3f; /* tens of frame, units of frame: 0x3f - "unknown" ? */ | |||
buf[2] = (1 << 7) | /* reserved -- always 1 */ | |||
((tc.tm_sec / 10) << 4) | /* Tens of seconds */ | |||
(tc.tm_sec % 10); /* Units of seconds */ | |||
buf[3] = (1 << 7) | /* reserved -- always 1 */ | |||
((tc.tm_min / 10) << 4) | /* Tens of minutes */ | |||
(tc.tm_min % 10); /* Units of minutes */ | |||
buf[4] = (3 << 6) | /* reserved -- always 1 */ | |||
((tc.tm_hour / 10) << 4) | /* Tens of hours */ | |||
(tc.tm_hour % 10); /* Units of hours */ | |||
break; | |||
default: | |||
buf[1] = buf[2] = buf[3] = buf[4] = 0xff; | |||
} | |||
return 5; | |||
} | |||
static void dv_inject_audio(DVMuxContext *c, int channel, uint8_t* frame_ptr) | |||
{ | |||
int i, j, d, of, size; | |||
size = 4 * dv_audio_frame_size(c->sys, c->frames); | |||
frame_ptr += channel * c->sys->difseg_size * 150 * 80; | |||
for (i = 0; i < c->sys->difseg_size; i++) { | |||
frame_ptr += 6 * 80; /* skip DIF segment header */ | |||
for (j = 0; j < 9; j++) { | |||
dv_write_pack(dv_aaux_packs_dist[i][j], c, &frame_ptr[3]); | |||
for (d = 8; d < 80; d+=2) { | |||
of = c->sys->audio_shuffle[i][j] + (d - 8)/2 * c->sys->audio_stride; | |||
if (of*2 >= size) | |||
continue; | |||
frame_ptr[d] = fifo_peek(&c->audio_data[channel], of*2+1); // FIXME: may be we have to admit | |||
frame_ptr[d+1] = fifo_peek(&c->audio_data[channel], of*2); // that DV is a big endian PCM | |||
} | |||
frame_ptr += 16 * 80; /* 15 Video DIFs + 1 Audio DIF */ | |||
} | |||
} | |||
} | |||
static void dv_inject_metadata(DVMuxContext *c, uint8_t* frame) | |||
{ | |||
int j, k; | |||
uint8_t* buf; | |||
for (buf = frame; buf < frame + c->sys->frame_size; buf += 150 * 80) { | |||
/* DV subcode: 2nd and 3d DIFs */ | |||
for (j = 80; j < 80 * 3; j += 80) { | |||
for (k = 6; k < 6 * 8; k += 8) | |||
dv_write_pack(dv_timecode, c, &buf[j+k]); | |||
if (((long)(buf-frame)/(c->sys->frame_size/(c->sys->difseg_size*c->sys->n_difchan))%c->sys->difseg_size) > 5) { /* FIXME: is this really needed ? */ | |||
dv_write_pack(dv_video_recdate, c, &buf[j+14]); | |||
dv_write_pack(dv_video_rectime, c, &buf[j+22]); | |||
dv_write_pack(dv_video_recdate, c, &buf[j+38]); | |||
dv_write_pack(dv_video_rectime, c, &buf[j+46]); | |||
} | |||
} | |||
/* DV VAUX: 4th, 5th and 6th 3DIFs */ | |||
for (j = 80*3 + 3; j < 80*6; j += 80) { | |||
dv_write_pack(dv_video_recdate, c, &buf[j+5*2]); | |||
dv_write_pack(dv_video_rectime, c, &buf[j+5*3]); | |||
dv_write_pack(dv_video_recdate, c, &buf[j+5*11]); | |||
dv_write_pack(dv_video_rectime, c, &buf[j+5*12]); | |||
} | |||
} | |||
} | |||
/* | |||
* The following 3 functions constitute our interface to the world | |||
*/ | |||
int dv_assemble_frame(DVMuxContext *c, AVStream* st, | |||
const uint8_t* data, int data_size, uint8_t** frame) | |||
{ | |||
int i, reqasize; | |||
*frame = &c->frame_buf[0]; | |||
reqasize = 4 * dv_audio_frame_size(c->sys, c->frames); | |||
switch (st->codec->codec_type) { | |||
case CODEC_TYPE_VIDEO: | |||
/* FIXME: we have to have more sensible approach than this one */ | |||
if (c->has_video) | |||
av_log(st->codec, AV_LOG_ERROR, "Can't process DV frame #%d. Insufficient audio data or severe sync problem.\n", c->frames); | |||
memcpy(*frame, data, c->sys->frame_size); | |||
c->has_video = 1; | |||
break; | |||
case CODEC_TYPE_AUDIO: | |||
for (i = 0; i < c->n_ast && st != c->ast[i]; i++); | |||
/* FIXME: we have to have more sensible approach than this one */ | |||
if (fifo_size(&c->audio_data[i], c->audio_data[i].rptr) + data_size >= 100*AVCODEC_MAX_AUDIO_FRAME_SIZE) | |||
av_log(st->codec, AV_LOG_ERROR, "Can't process DV frame #%d. Insufficient video data or severe sync problem.\n", c->frames); | |||
fifo_write(&c->audio_data[i], data, data_size, &c->audio_data[i].wptr); | |||
/* Lets see if we've got enough audio for one DV frame */ | |||
c->has_audio |= ((reqasize <= fifo_size(&c->audio_data[i], c->audio_data[i].rptr)) << i); | |||
break; | |||
default: | |||
break; | |||
} | |||
/* Lets see if we have enough data to construct one DV frame */ | |||
if (c->has_video == 1 && c->has_audio + 1 == 1<<c->n_ast) { | |||
dv_inject_metadata(c, *frame); | |||
for (i=0; i<c->n_ast; i++) { | |||
dv_inject_audio(c, i, *frame); | |||
fifo_drain(&c->audio_data[i], reqasize); | |||
} | |||
c->has_video = 0; | |||
c->has_audio = 0; | |||
c->frames++; | |||
return c->sys->frame_size; | |||
} | |||
return 0; | |||
} | |||
DVMuxContext* dv_init_mux(AVFormatContext* s) | |||
{ | |||
DVMuxContext *c; | |||
AVStream *vst = NULL; | |||
int i; | |||
/* we support at most 1 video and 2 audio streams */ | |||
if (s->nb_streams > 3) | |||
return NULL; | |||
c = av_mallocz(sizeof(DVMuxContext)); | |||
if (!c) | |||
return NULL; | |||
c->n_ast = 0; | |||
c->ast[0] = c->ast[1] = NULL; | |||
/* We have to sort out where audio and where video stream is */ | |||
for (i=0; i<s->nb_streams; i++) { | |||
switch (s->streams[i]->codec->codec_type) { | |||
case CODEC_TYPE_VIDEO: | |||
vst = s->streams[i]; | |||
break; | |||
case CODEC_TYPE_AUDIO: | |||
c->ast[c->n_ast++] = s->streams[i]; | |||
break; | |||
default: | |||
goto bail_out; | |||
} | |||
} | |||
/* Some checks -- DV format is very picky about its incoming streams */ | |||
if (!vst || vst->codec->codec_id != CODEC_ID_DVVIDEO) | |||
goto bail_out; | |||
for (i=0; i<c->n_ast; i++) { | |||
if (c->ast[i] && (c->ast[i]->codec->codec_id != CODEC_ID_PCM_S16LE || | |||
c->ast[i]->codec->sample_rate != 48000 || | |||
c->ast[i]->codec->channels != 2)) | |||
goto bail_out; | |||
} | |||
c->sys = dv_codec_profile(vst->codec); | |||
if (!c->sys) | |||
goto bail_out; | |||
if((c->n_ast > 1) && (c->sys->n_difchan < 2)) { | |||
/* only 1 stereo pair is allowed in 25Mbps mode */ | |||
goto bail_out; | |||
} | |||
/* Ok, everything seems to be in working order */ | |||
c->frames = 0; | |||
c->has_audio = 0; | |||
c->has_video = 0; | |||
c->start_time = (time_t)s->timestamp; | |||
for (i=0; i<c->n_ast; i++) { | |||
if (c->ast[i] && fifo_init(&c->audio_data[i], 100*AVCODEC_MAX_AUDIO_FRAME_SIZE) < 0) { | |||
while (i>0) { | |||
i--; | |||
fifo_free(&c->audio_data[i]); | |||
} | |||
goto bail_out; | |||
} | |||
} | |||
return c; | |||
bail_out: | |||
av_free(c); | |||
return NULL; | |||
} | |||
void dv_delete_mux(DVMuxContext *c) | |||
{ | |||
int i; | |||
for (i=0; i < c->n_ast; i++) | |||
fifo_free(&c->audio_data[i]); | |||
} | |||
#ifdef CONFIG_MUXERS | |||
static int dv_write_header(AVFormatContext *s) | |||
{ | |||
s->priv_data = dv_init_mux(s); | |||
if (!s->priv_data) { | |||
av_log(s, AV_LOG_ERROR, "Can't initialize DV format!\n" | |||
"Make sure that you supply exactly two streams:\n" | |||
" video: 25fps or 29.97fps, audio: 2ch/48Khz/PCM\n" | |||
" (50Mbps allows an optional second audio stream)\n"); | |||
return -1; | |||
} | |||
return 0; | |||
} | |||
static int dv_write_packet(struct AVFormatContext *s, AVPacket *pkt) | |||
{ | |||
uint8_t* frame; | |||
int fsize; | |||
fsize = dv_assemble_frame((DVMuxContext *)s->priv_data, s->streams[pkt->stream_index], | |||
pkt->data, pkt->size, &frame); | |||
if (fsize > 0) { | |||
put_buffer(&s->pb, frame, fsize); | |||
put_flush_packet(&s->pb); | |||
} | |||
return 0; | |||
} | |||
/* | |||
* We might end up with some extra A/V data without matching counterpart. | |||
* E.g. video data without enough audio to write the complete frame. | |||
* Currently we simply drop the last frame. I don't know whether this | |||
* is the best strategy of all | |||
*/ | |||
static int dv_write_trailer(struct AVFormatContext *s) | |||
{ | |||
dv_delete_mux((DVMuxContext *)s->priv_data); | |||
return 0; | |||
} | |||
#endif /* CONFIG_MUXERS */ | |||
#ifdef CONFIG_DV_MUXER | |||
AVOutputFormat dv_muxer = { | |||
"dv", | |||
"DV video format", | |||
NULL, | |||
"dv", | |||
sizeof(DVMuxContext), | |||
CODEC_ID_PCM_S16LE, | |||
CODEC_ID_DVVIDEO, | |||
dv_write_header, | |||
dv_write_packet, | |||
dv_write_trailer, | |||
}; | |||
#endif |