FFmpeg/libavformat/dump.c

/*
 * Various pretty-printing functions for use within FFmpeg
 *
 * 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
 */

#include <stdio.h>
#include <stdint.h>

#include "libavutil/log.h"
#include "libavutil/mathematics.h"
#include "libavutil/avstring.h"

#include "avformat.h"

#define HEXDUMP_PRINT(...)                                                    \
    do {                                                                      \
        if (!f)                                                               \
            av_log(avcl, level, __VA_ARGS__);                                 \
        else                                                                  \
            fprintf(f, __VA_ARGS__);                                          \
    } while (0)

static void hex_dump_internal(void *avcl, FILE *f, int level,
                              const uint8_t *buf, int size)
{
    int len, i, j, c;

    for (i = 0; i < size; i += 16) {
        len = size - i;
        if (len > 16)
            len = 16;
        HEXDUMP_PRINT("%08x ", i);
        for (j = 0; j < 16; j++) {
            if (j < len)
                HEXDUMP_PRINT(" %02x", buf[i + j]);
            else
                HEXDUMP_PRINT("   ");
        }
        HEXDUMP_PRINT(" ");
        for (j = 0; j < len; j++) {
            c = buf[i + j];
            if (c < ' ' || c > '~')
                c = '.';
            HEXDUMP_PRINT("%c", c);
        }
        HEXDUMP_PRINT("\n");
    }
}

void av_hex_dump(FILE *f, const uint8_t *buf, int size)
{
    hex_dump_internal(NULL, f, 0, buf, size);
}

void av_hex_dump_log(void *avcl, int level, const uint8_t *buf, int size)
{
    hex_dump_internal(avcl, NULL, level, buf, size);
}

static void pkt_dump_internal(void *avcl, FILE *f, int level, const AVPacket *pkt,
                              int dump_payload, AVRational time_base)
{
    HEXDUMP_PRINT("stream #%d:\n", pkt->stream_index);
    HEXDUMP_PRINT("  keyframe=%d\n", (pkt->flags & AV_PKT_FLAG_KEY) != 0);
    HEXDUMP_PRINT("  duration=%0.3f\n", pkt->duration * av_q2d(time_base));
    /* DTS is _always_ valid after av_read_frame() */
    HEXDUMP_PRINT("  dts=");
    if (pkt->dts == AV_NOPTS_VALUE)
        HEXDUMP_PRINT("N/A");
    else
        HEXDUMP_PRINT("%0.3f", pkt->dts * av_q2d(time_base));
    /* PTS may not be known if B-frames are present. */
    HEXDUMP_PRINT("  pts=");
    if (pkt->pts == AV_NOPTS_VALUE)
        HEXDUMP_PRINT("N/A");
    else
        HEXDUMP_PRINT("%0.3f", pkt->pts * av_q2d(time_base));
    HEXDUMP_PRINT("\n");
    HEXDUMP_PRINT("  size=%d\n", pkt->size);
    if (dump_payload)
        av_hex_dump(f, pkt->data, pkt->size);
}

void av_pkt_dump2(FILE *f, const AVPacket *pkt, int dump_payload, const AVStream *st)
{
    pkt_dump_internal(NULL, f, 0, pkt, dump_payload, st->time_base);
}

void av_pkt_dump_log2(void *avcl, int level, const AVPacket *pkt, int dump_payload,
                      const AVStream *st)
{
    pkt_dump_internal(avcl, NULL, level, pkt, dump_payload, st->time_base);
}


static void print_fps(double d, const char *postfix)
{
    uint64_t v = lrintf(d * 100);
    if (v % 100)
        av_log(NULL, AV_LOG_INFO, ", %3.2f %s", d, postfix);
    else if (v % (100 * 1000))
        av_log(NULL, AV_LOG_INFO, ", %1.0f %s", d, postfix);
    else
        av_log(NULL, AV_LOG_INFO, ", %1.0fk %s", d / 1000, postfix);
}

static void dump_metadata(void *ctx, AVDictionary *m, const char *indent)
{
    if (m && !(av_dict_count(m) == 1 && av_dict_get(m, "language", NULL, 0))) {
        AVDictionaryEntry *tag = NULL;

        av_log(ctx, AV_LOG_INFO, "%sMetadata:\n", indent);
        while ((tag = av_dict_get(m, "", tag, AV_DICT_IGNORE_SUFFIX)))
            if (strcmp("language", tag->key)) {
                const char *p = tag->value;
                av_log(ctx, AV_LOG_INFO,
                       "%s  %-16s: ", indent, tag->key);
                while (*p) {
                    char tmp[256];
                    size_t len = strcspn(p, "\x8\xa\xb\xc\xd");
                    av_strlcpy(tmp, p, FFMIN(sizeof(tmp), len+1));
                    av_log(ctx, AV_LOG_INFO, "%s", tmp);
                    p += len;
                    if (*p == 0xd) av_log(ctx, AV_LOG_INFO, " ");
                    if (*p == 0xa) av_log(ctx, AV_LOG_INFO, "\n%s  %-16s: ", indent, "");
                    if (*p) p++;
                }
                av_log(ctx, AV_LOG_INFO, "\n");
            }
    }
}

/* "user interface" functions */
static void dump_stream_format(AVFormatContext *ic, int i,
                               int index, int is_output)
{
    char buf[256];
    int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
    AVStream *st = ic->streams[i];
    int g = av_gcd(st->time_base.num, st->time_base.den);
    AVDictionaryEntry *lang = av_dict_get(st->metadata, "language", NULL, 0);

    avcodec_string(buf, sizeof(buf), st->codec, is_output);
    av_log(NULL, AV_LOG_INFO, "    Stream #%d:%d", index, i);

    /* the pid is an important information, so we display it */
    /* XXX: add a generic system */
    if (flags & AVFMT_SHOW_IDS)
        av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
    if (lang)
        av_log(NULL, AV_LOG_INFO, "(%s)", lang->value);
    av_log(NULL, AV_LOG_DEBUG, ", %d, %d/%d", st->codec_info_nb_frames,
           st->time_base.num / g, st->time_base.den / g);
    av_log(NULL, AV_LOG_INFO, ": %s", buf);

    if (st->sample_aspect_ratio.num && // default
        av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)) {
        AVRational display_aspect_ratio;
        av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
                  st->codec->width  * st->sample_aspect_ratio.num,
                  st->codec->height * st->sample_aspect_ratio.den,
                  1024 * 1024);
        av_log(NULL, AV_LOG_INFO, ", SAR %d:%d DAR %d:%d",
               st->sample_aspect_ratio.num, st->sample_aspect_ratio.den,
               display_aspect_ratio.num, display_aspect_ratio.den);
    }

    if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
        if (st->avg_frame_rate.den && st->avg_frame_rate.num)
            print_fps(av_q2d(st->avg_frame_rate), "fps");
#if FF_API_R_FRAME_RATE
        if (st->r_frame_rate.den && st->r_frame_rate.num)
            print_fps(av_q2d(st->r_frame_rate), "tbr");
#endif
        if (st->time_base.den && st->time_base.num)
            print_fps(1 / av_q2d(st->time_base), "tbn");
        if (st->codec->time_base.den && st->codec->time_base.num)
            print_fps(1 / av_q2d(st->codec->time_base), "tbc");
    }

    if (st->disposition & AV_DISPOSITION_DEFAULT)
        av_log(NULL, AV_LOG_INFO, " (default)");
    if (st->disposition & AV_DISPOSITION_DUB)
        av_log(NULL, AV_LOG_INFO, " (dub)");
    if (st->disposition & AV_DISPOSITION_ORIGINAL)
        av_log(NULL, AV_LOG_INFO, " (original)");
    if (st->disposition & AV_DISPOSITION_COMMENT)
        av_log(NULL, AV_LOG_INFO, " (comment)");
    if (st->disposition & AV_DISPOSITION_LYRICS)
        av_log(NULL, AV_LOG_INFO, " (lyrics)");
    if (st->disposition & AV_DISPOSITION_KARAOKE)
        av_log(NULL, AV_LOG_INFO, " (karaoke)");
    if (st->disposition & AV_DISPOSITION_FORCED)
        av_log(NULL, AV_LOG_INFO, " (forced)");
    if (st->disposition & AV_DISPOSITION_HEARING_IMPAIRED)
        av_log(NULL, AV_LOG_INFO, " (hearing impaired)");
    if (st->disposition & AV_DISPOSITION_VISUAL_IMPAIRED)
        av_log(NULL, AV_LOG_INFO, " (visual impaired)");
    if (st->disposition & AV_DISPOSITION_CLEAN_EFFECTS)
        av_log(NULL, AV_LOG_INFO, " (clean effects)");
    av_log(NULL, AV_LOG_INFO, "\n");

    dump_metadata(NULL, st->metadata, "    ");
}

void av_dump_format(AVFormatContext *ic, int index,
                    const char *url, int is_output)
{
    int i;
    uint8_t *printed = ic->nb_streams ? av_mallocz(ic->nb_streams) : NULL;
    if (ic->nb_streams && !printed)
        return;

    av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
           is_output ? "Output" : "Input",
           index,
           is_output ? ic->oformat->name : ic->iformat->name,
           is_output ? "to" : "from", url);
    dump_metadata(NULL, ic->metadata, "  ");

    if (!is_output) {
        av_log(NULL, AV_LOG_INFO, "  Duration: ");
        if (ic->duration != AV_NOPTS_VALUE) {
            int hours, mins, secs, us;
            int64_t duration = ic->duration + 5000;
            secs  = duration / AV_TIME_BASE;
            us    = duration % AV_TIME_BASE;
            mins  = secs / 60;
            secs %= 60;
            hours = mins / 60;
            mins %= 60;
            av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
                   (100 * us) / AV_TIME_BASE);
        } else {
            av_log(NULL, AV_LOG_INFO, "N/A");
        }
        if (ic->start_time != AV_NOPTS_VALUE) {
            int secs, us;
            av_log(NULL, AV_LOG_INFO, ", start: ");
            secs = ic->start_time / AV_TIME_BASE;
            us   = abs(ic->start_time % AV_TIME_BASE);
            av_log(NULL, AV_LOG_INFO, "%d.%06d",
                   secs, (int) av_rescale(us, 1000000, AV_TIME_BASE));
        }
        av_log(NULL, AV_LOG_INFO, ", bitrate: ");
        if (ic->bit_rate)
            av_log(NULL, AV_LOG_INFO, "%d kb/s", ic->bit_rate / 1000);
        else
            av_log(NULL, AV_LOG_INFO, "N/A");
        av_log(NULL, AV_LOG_INFO, "\n");
    }

    for (i = 0; i < ic->nb_chapters; i++) {
        AVChapter *ch = ic->chapters[i];
        av_log(NULL, AV_LOG_INFO, "    Chapter #%d.%d: ", index, i);
        av_log(NULL, AV_LOG_INFO,
               "start %f, ", ch->start * av_q2d(ch->time_base));
        av_log(NULL, AV_LOG_INFO,
               "end %f\n", ch->end * av_q2d(ch->time_base));

        dump_metadata(NULL, ch->metadata, "    ");
    }

    if (ic->nb_programs) {
        int j, k, total = 0;
        for (j = 0; j < ic->nb_programs; j++) {
            AVDictionaryEntry *name = av_dict_get(ic->programs[j]->metadata,
                                                  "name", NULL, 0);
            av_log(NULL, AV_LOG_INFO, "  Program %d %s\n", ic->programs[j]->id,
                   name ? name->value : "");
            dump_metadata(NULL, ic->programs[j]->metadata, "    ");
            for (k = 0; k < ic->programs[j]->nb_stream_indexes; k++) {
                dump_stream_format(ic, ic->programs[j]->stream_index[k],
                                   index, is_output);
                printed[ic->programs[j]->stream_index[k]] = 1;
            }
            total += ic->programs[j]->nb_stream_indexes;
        }
        if (total < ic->nb_streams)
            av_log(NULL, AV_LOG_INFO, "  No Program\n");
    }

    for (i = 0; i < ic->nb_streams; i++)
        if (!printed[i])
            dump_stream_format(ic, i, index, is_output);

    av_free(printed);
}