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ffmpeg
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* First round of AV sync fixes. 

* -r now does the right thing.
   * frame rate and frame sizes now share same abbv. table and you
     can do -r ntsc as well as -s ntsc

Originally committed as revision 2035 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Roman Shaposhnik 2003-07-12 07:37:05 +00:00
parent 1bc1cfdddf
commit 445f1b83ad
3 changed files with 94 additions and 36 deletions
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66
ffmpeg.c
View File

@ -205,6 +205,7 @@ typedef struct AVInputStream {
int64_t start; /* time when read started */
unsigned long frame; /* current frame */
AVFrac pts; /* synthetic pts for cases where pkt.pts == 0 */
} AVInputStream;
typedef struct AVInputFile {
@ -507,16 +508,21 @@ static void do_video_out(AVFormatContext *s,
ost->sync_ipts_offset = 0.000001; /* one microsecond */
}
#if defined(PJSG)
{
static char *action[] = { "drop frame", "copy frame", "dup frame" };
printf("Input PTS %12.6f, output PTS %12.6f: %s\n",
(double) ost->sync_ipts, (double) ost->st->pts.val * s->pts_num / s->pts_den,
action[nb_frames]);
}
#endif
}
}
#if defined(AVSYNC_DEBUG)
static char *action[] = { "drop frame", "copy frame", "dup frame" };
if (audio_sync)
fprintf(stderr, "Input APTS %12.6f, output APTS %12.6f, ",
(double) audio_sync->sync_ipts,
(double) audio_sync->st->pts.val * s->pts_num / s->pts_den);
fprintf(stderr, "Input VPTS %12.6f, output VPTS %12.6f: %s\n",
(double) ost->sync_ipts,
(double) ost->st->pts.val * s->pts_num / s->pts_den,
action[nb_frames]);
#endif
if (nb_frames <= 0)
return;
@ -751,7 +757,7 @@ static int av_encode(AVFormatContext **output_files,
int nb_input_files,
AVStreamMap *stream_maps, int nb_stream_maps)
{
int ret, i, j, k, n, nb_istreams = 0, nb_ostreams = 0, pts_set;
int ret, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
AVFormatContext *is, *os;
AVCodecContext *codec, *icodec;
AVOutputStream *ost, **ost_table = NULL;
@ -1101,6 +1107,19 @@ static int av_encode(AVFormatContext **output_files,
/* init pts */
for(i=0;i<nb_istreams;i++) {
ist = ist_table[i];
is = input_files[ist->file_index];
switch (ist->st->codec.codec_type) {
case CODEC_TYPE_AUDIO:
av_frac_init(&ist->pts,
0, 0, is->pts_num * ist->st->codec.sample_rate);
break;
case CODEC_TYPE_VIDEO:
av_frac_init(&ist->pts,
0, 0, is->pts_num * ist->st->codec.frame_rate);
break;
default:
break;
}
}
/* compute buffer size max (should use a complete heuristic) */
@ -1200,7 +1219,6 @@ static int av_encode(AVFormatContext **output_files,
len = pkt.size;
ptr = pkt.data;
pts_set = 0;
while (len > 0) {
int64_t ipts;
@ -1214,12 +1232,10 @@ static int av_encode(AVFormatContext **output_files,
frame has begun (MPEG semantics) */
/* NOTE2: even if the fraction is not initialized,
av_frac_set can be used to set the integer part */
if (ist->frame_decoded &&
pkt.pts != AV_NOPTS_VALUE &&
!pts_set) {
ipts = pkt.pts;
if (ist->frame_decoded) {
/* If pts is unavailable -- we have to use synthetic one */
ipts = (pkt.pts == AV_NOPTS_VALUE) ? ist->pts.val : pkt.pts;
ist->frame_decoded = 0;
pts_set = 1;
}
switch(ist->st->codec.codec_type) {
@ -1239,6 +1255,8 @@ static int av_encode(AVFormatContext **output_files,
continue;
}
data_buf = (uint8_t *)samples;
av_frac_add(&ist->pts,
is->pts_den * data_size / (2 * ist->st->codec.channels));
break;
case CODEC_TYPE_VIDEO:
{
@ -1262,7 +1280,8 @@ static int av_encode(AVFormatContext **output_files,
len -= ret;
continue;
}
av_frac_add(&ist->pts,
is->pts_den * ist->st->codec.frame_rate_base);
}
break;
default:
@ -1597,12 +1616,12 @@ static void opt_debug(const char *arg)
static void opt_frame_rate(const char *arg)
{
frame_rate_base = DEFAULT_FRAME_RATE_BASE; //FIXME not optimal
frame_rate = (int)(strtod(arg, 0) * frame_rate_base + 0.5);
//FIXME parse fractions
if (parse_frame_rate(&frame_rate, &frame_rate_base, arg) < 0) {
fprintf(stderr, "Incorrect frame rate\n");
exit(1);
}
}
static void opt_frame_crop_top(const char *arg)
{
frame_topBand = atoi(arg);
@ -1677,8 +1696,7 @@ static void opt_frame_crop_right(const char *arg)
static void opt_frame_size(const char *arg)
{
parse_image_size(&frame_width, &frame_height, arg);
if (frame_width <= 0 || frame_height <= 0) {
if (parse_image_size(&frame_width, &frame_height, arg) < 0) {
fprintf(stderr, "Incorrect frame size\n");
exit(1);
}
@ -2582,7 +2600,7 @@ static void show_formats(void)
printf(" %s:", up->name);
printf("\n");
printf("Frame size abbreviations: sqcif qcif cif 4cif\n");
printf("Frame size, frame rate abbreviations: ntsc pal film ntsc-film sqcif qcif cif 4cif\n");
printf("Motion estimation methods:");
pp = motion_str;
while (*pp) {
@ -2617,7 +2635,7 @@ const OptionDef options[] = {
{ "passlogfile", HAS_ARG | OPT_STRING, {(void*)&pass_logfilename}, "select two pass log file name", "file" },
/* video options */
{ "b", HAS_ARG, {(void*)opt_video_bitrate}, "set video bitrate (in kbit/s)", "bitrate" },
{ "r", HAS_ARG, {(void*)opt_frame_rate}, "set frame rate (in Hz)", "rate" },
{ "r", HAS_ARG, {(void*)opt_frame_rate}, "set frame rate (Hz value, fraction or abbreviation)", "rate" },
{ "re", OPT_BOOL|OPT_EXPERT, {(void*)&rate_emu}, "read input at native frame rate" },
{ "s", HAS_ARG, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
{ "aspect", HAS_ARG, {(void*)opt_frame_aspect_ratio}, "set aspect ratio (4:3, 16:9 or 1.3333, 1.7777)", "aspect" },

1
libavformat/avformat.h
View File

@ -408,6 +408,7 @@ void dump_format(AVFormatContext *ic,
const char *url,
int is_output);
int parse_image_size(int *width_ptr, int *height_ptr, const char *str);
int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg);
int64_t parse_date(const char *datestr, int duration);
int64_t av_gettime(void);

63
libavformat/utils.c
View File

@ -879,28 +879,33 @@ void dump_format(AVFormatContext *ic,
}
typedef struct {
const char *str;
const char *abv;
int width, height;
} SizeEntry;
int frame_rate, frame_rate_base;
} AbvEntry;
static SizeEntry sizes[] = {
{ "sqcif", 128, 96 },
{ "qcif", 176, 144 },
{ "cif", 352, 288 },
{ "4cif", 704, 576 },
static AbvEntry frame_abvs[] = {
{ "ntsc", 352, 240, 30000, 1001 },
{ "pal", 352, 288, 25, 1 },
{ "film", 352, 240, 24, 1 },
{ "ntsc-film", 352, 240, 24000, 1001 },
{ "sqcif", 128, 96, 0, 0 },
{ "qcif", 176, 144, 0, 0 },
{ "cif", 352, 288, 0, 0 },
{ "4cif", 704, 576, 0, 0 },
};
int parse_image_size(int *width_ptr, int *height_ptr, const char *str)
{
int i;
int n = sizeof(sizes) / sizeof(SizeEntry);
int n = sizeof(frame_abvs) / sizeof(AbvEntry);
const char *p;
int frame_width = 0, frame_height = 0;
for(i=0;i<n;i++) {
if (!strcmp(sizes[i].str, str)) {
frame_width = sizes[i].width;
frame_height = sizes[i].height;
if (!strcmp(frame_abvs[i].abv, str)) {
frame_width = frame_abvs[i].width;
frame_height = frame_abvs[i].height;
break;
}
}
@ -918,6 +923,40 @@ int parse_image_size(int *width_ptr, int *height_ptr, const char *str)
return 0;
}
int parse_frame_rate(int *frame_rate, int *frame_rate_base, const char *arg)
{
int i;
char* cp;
/* First, we check our abbreviation table */
for (i = 0; i < sizeof(frame_abvs)/sizeof(*frame_abvs); ++i)
if (!strcmp(frame_abvs[i].abv, arg)) {
*frame_rate = frame_abvs[i].frame_rate;
*frame_rate_base = frame_abvs[i].frame_rate_base;
return 0;
}
/* Then, we try to parse it as fraction */
cp = strchr(arg, '/');
if (cp) {
char* cpp;
*frame_rate = strtol(arg, &cpp, 10);
if (cpp != arg || cpp == cp)
*frame_rate_base = strtol(cp+1, &cpp, 10);
else
*frame_rate = 0;
}
else {
/* Finally we give up and parse it as double */
*frame_rate_base = DEFAULT_FRAME_RATE_BASE;
*frame_rate = (int)(strtod(arg, 0) * (*frame_rate_base) + 0.5);
}
if (!*frame_rate || !*frame_rate_base)
return -1;
else
return 0;
}
int64_t av_gettime(void)
{
#ifdef CONFIG_WIN32