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decode latency patch by (Leon van Stuivenberg <l dot vanstuivenberg at chello dot nl>)

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Originally committed as revision 2896 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Leon van Stuivenberg 2004-03-15 03:29:32 +00:00 committed by Michael Niedermayer
parent 6cc270c2ac
commit e15dec10d5
3 changed files with 42 additions and 6 deletions
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1
libavformat/avio.h
View File

@ -119,6 +119,7 @@ char *url_fgets(ByteIOContext *s, char *buf, int buf_size);
void put_flush_packet(ByteIOContext *s);
int get_buffer(ByteIOContext *s, unsigned char *buf, int size);
int get_partial_buffer(ByteIOContext *s, unsigned char *buf, int size);
int get_byte(ByteIOContext *s);
unsigned int get_le32(ByteIOContext *s);
uint64_t get_le64(ByteIOContext *s);

16
libavformat/aviobuf.c
View File

@ -309,6 +309,22 @@ int get_buffer(ByteIOContext *s, unsigned char *buf, int size)
return size1 - size;
}
int get_partial_buffer(ByteIOContext *s, unsigned char *buf, int size)
{
int len;
len = s->buf_end - s->buf_ptr;
if (len == 0) {
fill_buffer(s);
len = s->buf_end - s->buf_ptr;
}
if (len > size)
len = size;
memcpy(buf, s->buf_ptr, len);
s->buf_ptr += len;
return len;
}
unsigned int get_le16(ByteIOContext *s)
{
unsigned int val;

31
libavformat/raw.c
View File

@ -102,6 +102,25 @@ static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
return ret;
}
static int raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
{
int ret, size;
size = RAW_PACKET_SIZE;
if (av_new_packet(pkt, size) < 0)
return -EIO;
pkt->stream_index = 0;
ret = get_partial_buffer(&s->pb, pkt->data, size);
if (ret <= 0) {
av_free_packet(pkt);
return -EIO;
}
pkt->size = ret;
return ret;
}
static int raw_read_close(AVFormatContext *s)
{
return 0;
@ -247,7 +266,7 @@ AVInputFormat ac3_iformat = {
0,
NULL,
ac3_read_header,
raw_read_packet,
raw_read_partial_packet,
raw_read_close,
.extensions = "ac3",
};
@ -273,7 +292,7 @@ AVInputFormat h263_iformat = {
0,
h263_probe,
video_read_header,
raw_read_packet,
raw_read_partial_packet,
raw_read_close,
// .extensions = "h263", //FIXME remove after writing mpeg4_probe
.value = CODEC_ID_H263,
@ -300,7 +319,7 @@ AVInputFormat m4v_iformat = {
0,
NULL /*mpegvideo_probe*/,
video_read_header,
raw_read_packet,
raw_read_partial_packet,
raw_read_close,
.extensions = "m4v", //FIXME remove after writing mpeg4_probe
.value = CODEC_ID_MPEG4,
@ -327,7 +346,7 @@ AVInputFormat h264_iformat = {
0,
NULL /*mpegvideo_probe*/,
video_read_header,
raw_read_packet,
raw_read_partial_packet,
raw_read_close,
.extensions = "h26l,h264", //FIXME remove after writing mpeg4_probe
.value = CODEC_ID_H264,
@ -354,7 +373,7 @@ AVInputFormat mpegvideo_iformat = {
0,
mpegvideo_probe,
video_read_header,
raw_read_packet,
raw_read_partial_packet,
raw_read_close,
.value = CODEC_ID_MPEG1VIDEO,
};
@ -380,7 +399,7 @@ AVInputFormat mjpeg_iformat = {
0,
NULL,
video_read_header,
raw_read_packet,
raw_read_partial_packet,
raw_read_close,
.extensions = "mjpg,mjpeg",
.value = CODEC_ID_MJPEG,