Skip to content

Commit

Permalink
Make ffmpeg support generic data stream
Browse files Browse the repository at this point in the history 
The patch is the first step to support -dcodec copy
  • Loading branch information
@lu-zero
lu-zero committed May 3, 2011
1 parent 4773d90 commit e3b540b
Show file tree
Hide file tree
Showing 3 changed files with 80 additions and 7 deletions.
1 change: 1 addition & 0 deletions cmdutils.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -122,6 +122,7 @@ typedef struct {
#define OPT_FUNC2 0x0400
#define OPT_INT64 0x0800
#define OPT_EXIT 0x1000
#define OPT_DATA 0x2000
union {
void (*func_arg)(const char *); //FIXME passing error code as int return would be nicer then exit() in the func
int *int_arg;
Expand Down
85 changes: 78 additions & 7 deletions ffmpeg.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -186,6 +186,10 @@ static char *subtitle_codec_name = NULL;
static char *subtitle_language = NULL;
static unsigned int subtitle_codec_tag = 0;

static int data_disable = 0;
static char *data_codec_name = NULL;
static unsigned int data_codec_tag = 0;

static float mux_preload= 0.5;
static float mux_max_delay= 0.7;

Expand All @@ -204,6 +208,7 @@ static char *pass_logfilename_prefix = NULL;
static int audio_stream_copy = 0;
static int video_stream_copy = 0;
static int subtitle_stream_copy = 0;
static int data_stream_copy = 0;
static int video_sync_method= -1;
static int audio_sync_method= 0;
static float audio_drift_threshold= 0.1;
Expand Down Expand Up @@ -490,6 +495,7 @@ static int ffmpeg_exit(int ret)
av_free(video_codec_name);
av_free(audio_codec_name);
av_free(subtitle_codec_name);
av_free(data_codec_name);

av_free(video_standard);

Expand Down Expand Up @@ -2135,6 +2141,8 @@ static int transcode(AVFormatContext **output_files,
codec->width = icodec->width;
codec->height = icodec->height;
break;
case AVMEDIA_TYPE_DATA:
break;
default:
abort();
}
Expand Down Expand Up @@ -2902,6 +2910,11 @@ static void opt_subtitle_codec(const char *arg)
opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
}

static void opt_data_codec(const char *arg)
{
opt_codec(&data_stream_copy, &data_codec_name, AVMEDIA_TYPE_DATA, arg);
}

static int opt_codec_tag(const char *opt, const char *arg)
{
char *tail;
Expand Down Expand Up @@ -3294,15 +3307,19 @@ static void opt_input_file(const char *filename)
av_freep(&subtitle_codec_name);
}

static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
int *has_subtitle_ptr)
static void check_inputs(int *has_video_ptr,
int *has_audio_ptr,
int *has_subtitle_ptr,
int *has_data_ptr)
{
int has_video, has_audio, has_subtitle, i, j;
int has_video, has_audio, has_subtitle, has_data, i, j;
AVFormatContext *ic;

has_video = 0;
has_audio = 0;
has_subtitle = 0;
has_data = 0;

for(j=0;j<nb_input_files;j++) {
ic = input_files[j];
for(i=0;i<ic->nb_streams;i++) {
Expand All @@ -3320,6 +3337,7 @@ static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
case AVMEDIA_TYPE_DATA:
case AVMEDIA_TYPE_ATTACHMENT:
case AVMEDIA_TYPE_UNKNOWN:
has_data = 1;
break;
default:
abort();
Expand All @@ -3329,6 +3347,7 @@ static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
*has_video_ptr = has_video;
*has_audio_ptr = has_audio;
*has_subtitle_ptr = has_subtitle;
*has_data_ptr = has_data;
}

static void new_video_stream(AVFormatContext *oc, int file_idx)
Expand Down Expand Up @@ -3555,6 +3574,45 @@ static void new_audio_stream(AVFormatContext *oc, int file_idx)
audio_stream_copy = 0;
}

static void new_data_stream(AVFormatContext *oc, int file_idx)
{
AVStream *st;
AVOutputStream *ost;
AVCodec *codec=NULL;
AVCodecContext *data_enc;

st = av_new_stream(oc, oc->nb_streams < nb_streamid_map ? streamid_map[oc->nb_streams] : 0);
if (!st) {
fprintf(stderr, "Could not alloc stream\n");
ffmpeg_exit(1);
}
ost = new_output_stream(oc, file_idx);
data_enc = st->codec;
output_codecs = grow_array(output_codecs, sizeof(*output_codecs), &nb_output_codecs, nb_output_codecs + 1);
if (!data_stream_copy) {
fprintf(stderr, "Data stream encoding not supported yet (only streamcopy)\n");
ffmpeg_exit(1);
}
avcodec_get_context_defaults3(st->codec, codec);

data_enc->codec_type = AVMEDIA_TYPE_DATA;

if (data_codec_tag)
data_enc->codec_tag= data_codec_tag;

if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
data_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
avcodec_opts[AVMEDIA_TYPE_DATA]->flags |= CODEC_FLAG_GLOBAL_HEADER;
}
if (data_stream_copy) {
st->stream_copy = 1;
}

data_disable = 0;
av_freep(&data_codec_name);
data_stream_copy = 0;
}

static void new_subtitle_stream(AVFormatContext *oc, int file_idx)
{
AVStream *st;
Expand Down Expand Up @@ -3625,6 +3683,7 @@ static int opt_new_stream(const char *opt, const char *arg)
if (!strcmp(opt, "newvideo" )) new_video_stream (oc, file_idx);
else if (!strcmp(opt, "newaudio" )) new_audio_stream (oc, file_idx);
else if (!strcmp(opt, "newsubtitle")) new_subtitle_stream(oc, file_idx);
else if (!strcmp(opt, "newdata" )) new_data_stream (oc, file_idx);
else av_assert0(0);
return 0;
}
Expand Down Expand Up @@ -3655,8 +3714,8 @@ static int opt_streamid(const char *opt, const char *arg)
static void opt_output_file(const char *filename)
{
AVFormatContext *oc;
int err, use_video, use_audio, use_subtitle;
int input_has_video, input_has_audio, input_has_subtitle;
int err, use_video, use_audio, use_subtitle, use_data;
int input_has_video, input_has_audio, input_has_subtitle, input_has_data;
AVFormatParameters params, *ap = &params;
AVOutputFormat *file_oformat;

Expand Down Expand Up @@ -3701,28 +3760,36 @@ static void opt_output_file(const char *filename)
use_video = file_oformat->video_codec != CODEC_ID_NONE || video_stream_copy || video_codec_name;
use_audio = file_oformat->audio_codec != CODEC_ID_NONE || audio_stream_copy || audio_codec_name;
use_subtitle = file_oformat->subtitle_codec != CODEC_ID_NONE || subtitle_stream_copy || subtitle_codec_name;
use_data = data_stream_copy || data_codec_name; /* XXX once generic data codec will be available add a ->data_codec reference and use it here */

/* disable if no corresponding type found and at least one
input file */
if (nb_input_files > 0) {
check_audio_video_sub_inputs(&input_has_video, &input_has_audio,
&input_has_subtitle);
check_inputs(&input_has_video,
&input_has_audio,
&input_has_subtitle,
&input_has_data);

if (!input_has_video)
use_video = 0;
if (!input_has_audio)
use_audio = 0;
if (!input_has_subtitle)
use_subtitle = 0;
if (!input_has_data)
use_data = 0;
}

/* manual disable */
if (audio_disable) use_audio = 0;
if (video_disable) use_video = 0;
if (subtitle_disable) use_subtitle = 0;
if (data_disable) use_data = 0;

if (use_video) new_video_stream(oc, nb_output_files);
if (use_audio) new_audio_stream(oc, nb_output_files);
if (use_subtitle) new_subtitle_stream(oc, nb_output_files);
if (use_data) new_data_stream(oc, nb_output_files);

oc->timestamp = recording_timestamp;

Expand Down Expand Up @@ -4138,6 +4205,8 @@ static int opt_preset(const char *opt, const char *arg)
opt_video_codec(tmp2);
}else if(!strcmp(tmp, "scodec")){
opt_subtitle_codec(tmp2);
}else if(!strcmp(tmp, "dcodec")){
opt_data_codec(tmp2);
}else if(opt_default(tmp, tmp2) < 0){
fprintf(stderr, "%s: Invalid option or argument: '%s', parsed as '%s' = '%s'\n", filename, line, tmp, tmp2);
ffmpeg_exit(1);
Expand Down Expand Up @@ -4280,6 +4349,8 @@ static const OptionDef options[] = {
{ "vpre", OPT_FUNC2 | HAS_ARG | OPT_VIDEO | OPT_EXPERT, {(void*)opt_preset}, "set the video options to the indicated preset", "preset" },
{ "spre", OPT_FUNC2 | HAS_ARG | OPT_SUBTITLE | OPT_EXPERT, {(void*)opt_preset}, "set the subtitle options to the indicated preset", "preset" },
{ "fpre", OPT_FUNC2 | HAS_ARG | OPT_EXPERT, {(void*)opt_preset}, "set options from indicated preset file", "filename" },
/* data codec support */
{ "dcodec", HAS_ARG | OPT_DATA, {(void*)opt_data_codec}, "force data codec ('copy' to copy stream)", "codec" },

{ "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
{ NULL, },
Expand Down
1 change: 1 addition & 0 deletions libavformat/riff.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -578,6 +578,7 @@ void ff_parse_specific_params(AVCodecContext *stream, int *au_rate, int *au_ssiz
*au_scale=stream->frame_size;
*au_rate= stream->sample_rate;
}else if(stream->codec_type == AVMEDIA_TYPE_VIDEO ||
stream->codec_type == AVMEDIA_TYPE_DATA ||
stream->codec_type == AVMEDIA_TYPE_SUBTITLE){
*au_scale= stream->time_base.num;
*au_rate = stream->time_base.den;
Expand Down

0 comments on commit e3b540b

Please sign in to comment.