virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

* Fix nasty problem with unitialized memory in the file_table

Browse Source 
* Add default entries to switch statements to catch programming errors
* Fix problem with high CPU usage when capturing live (the audio grabber
  is non-blocking for some reason). This is the stream_no_data stuff.
* Handle the video grabber getting behind in its work -- PKT_FLAG_DROPPED_FRAME

Originally committed as revision 453 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Philip Gladstone 2002-05-09 01:06:59 +00:00
parent c6a8f2ce07
commit 51bd4565f7
1 changed files with 43 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
ffmpeg.c
View File

@ -138,6 +138,7 @@ typedef struct AVInputStream {
int discard; /* true if stream data should be discarded */
int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
INT64 pts; /* current pts */
int pts_increment; /* expected pts increment for next packet */
int frame_number; /* current frame */
INT64 sample_index; /* current sample */
} AVInputStream;
@ -599,13 +600,12 @@ static int av_encode(AVFormatContext **output_files,
AVInputStream *ist, **ist_table = NULL;
INT64 min_pts, start_time;
AVInputFile *file_table;
AVFormatContext *stream_no_data;
file_table= (AVInputFile*) malloc(nb_input_files * sizeof(AVInputFile));
file_table= (AVInputFile*) av_mallocz(nb_input_files * sizeof(AVInputFile));
if (!file_table)
goto fail;
memset(file_table, 0, sizeof(file_table));
/* input stream init */
j = 0;
for(i=0;i<nb_input_files;i++) {
@ -797,6 +797,8 @@ static int av_encode(AVFormatContext **output_files,
ist->decoding_needed = 1;
}
break;
default:
abort();
}
}
@ -871,6 +873,8 @@ static int av_encode(AVFormatContext **output_files,
start_time = gettime();
min_pts = 0;
stream_no_data = 0;
for(;;) {
int file_index, ist_index;
AVPacket pkt;
@ -891,14 +895,26 @@ static int av_encode(AVFormatContext **output_files,
min_pts = MAXINT64;
for(i=0;i<nb_istreams;i++) {
ist = ist_table[i];
if (!ist->discard && !file_table[ist->file_index].eof_reached && ist->pts < min_pts) {
min_pts = ist->pts;
/* For some reason, the pts_increment code breaks q estimation?!? */
if (!ist->discard && !file_table[ist->file_index].eof_reached &&
ist->pts /* + ist->pts_increment */ < min_pts && input_files[ist->file_index] != stream_no_data) {
min_pts = ist->pts /* + ist->pts_increment */;
file_index = ist->file_index;
}
}
/* if none, if is finished */
if (file_index < 0)
if (file_index < 0) {
if (stream_no_data) {
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 1000 * 1000 * 10;
nanosleep(&ts, 0);
stream_no_data = 0;
continue;
}
break;
}
/* finish if recording time exhausted */
if (recording_time > 0 && min_pts >= recording_time)
break;
@ -908,12 +924,20 @@ static int av_encode(AVFormatContext **output_files,
file_table[file_index].eof_reached = 1;
continue;
}
if (!pkt.size) {
stream_no_data = is;
} else {
stream_no_data = 0;
}
ist_index = file_table[file_index].ist_index + pkt.stream_index;
ist = ist_table[ist_index];
if (ist->discard) {
continue;
}
if (pkt.flags & PKT_FLAG_DROPPED_FRAME)
ist->frame_number++;
if (do_hex_dump) {
printf("stream #%d, size=%d:\n", pkt.stream_index, pkt.size);
hex_dump(pkt.data, pkt.size);
@ -986,12 +1010,17 @@ static int av_encode(AVFormatContext **output_files,
case CODEC_TYPE_AUDIO:
ist->pts = (INT64)1000000 * ist->sample_index / ist->st->codec.sample_rate;
ist->sample_index += data_size / (2 * ist->st->codec.channels);
ist->pts_increment = (INT64) (data_size / (2 * ist->st->codec.channels)) * 1000000 / ist->st->codec.sample_rate;
break;
case CODEC_TYPE_VIDEO:
ist->frame_number++;
ist->pts = ((INT64)ist->frame_number * 1000000 * FRAME_RATE_BASE) /
ist->st->codec.frame_rate;
ist->pts_increment = ((INT64) 1000000 * FRAME_RATE_BASE) /
ist->st->codec.frame_rate;
break;
default:
abort();
}
ptr += ret;
len -= ret;
@ -1014,6 +1043,8 @@ static int av_encode(AVFormatContext **output_files,
if (do_vstats)
do_video_stats(ost, ist, frame_size);
break;
default:
abort();
}
} else {
/* no reencoding needed : output the packet directly */
@ -1662,6 +1693,8 @@ void opt_input_file(const char *filename)
frame_width = enc->width;
frame_rate = enc->frame_rate;
break;
default:
abort();
}
}
@ -1690,6 +1723,8 @@ void check_audio_video_inputs(int *has_video_ptr, int *has_audio_ptr)
case CODEC_TYPE_VIDEO:
has_video = 1;
break;
default:
abort();
}
}
}
@ -1947,6 +1982,8 @@ void prepare_grab(void)
ap->frame_rate = enc->frame_rate;
has_video = 1;
break;
default:
abort();
}
}
}