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Merge remote-tracking branch 'qatar/master'

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* qatar/master:
  aac_latm: reconfigure decoder on audio specific config changes
  latmdec: fix audio specific config parsing
  Add avcodec_decode_audio4().
  avcodec: change number of plane pointers from 4 to 8 at next major bump.
  Update developers documentation with coding conventions.
  svq1dec: avoid undefined get_bits(0) call
  ARM: h264dsp_neon cosmetics
  ARM: make some NEON macros reusable
  Do not memcpy raw video frames when using null muxer
  fate: update asf seektest
  vp8: flush buffers on size changes.
  doc: improve general documentation for MacOSX
  asf: use packet dts as approximation of pts
  asf: do not call av_read_frame
  rtsp: Initialize the media_type_mask in the rtp guessing demuxer
  Cleaned up alacenc.c

Conflicts:
	doc/APIchanges
	doc/developer.texi
	libavcodec/8svx.c
	libavcodec/aacdec.c
	libavcodec/ac3dec.c
	libavcodec/avcodec.h
	libavcodec/nellymoserdec.c
	libavcodec/tta.c
	libavcodec/utils.c
	libavcodec/version.h
	libavcodec/wmadec.c
	libavformat/asfdec.c
	tests/ref/seek/lavf_asf

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
2011-12-03 02:08:55 +01:00
parent 12804348f5 d268b79e34
commit e4de71677f
87 changed files with 2226 additions and 1307 deletions
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46
libavcodec/s302m.c
View File

@ -25,6 +25,10 @@
#define AES3_HEADER_LEN 4
typedef struct S302MDecodeContext {
AVFrame frame;
} S302MDecodeContext;
static int s302m_parse_frame_header(AVCodecContext *avctx, const uint8_t *buf,
int buf_size)
{
@ -83,10 +87,12 @@ static int s302m_parse_frame_header(AVCodecContext *avctx, const uint8_t *buf,
}
static int s302m_decode_frame(AVCodecContext *avctx, void *data,
int *data_size, AVPacket *avpkt)
int *got_frame_ptr, AVPacket *avpkt)
{
S302MDecodeContext *s = avctx->priv_data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
int block_size, ret;
int frame_size = s302m_parse_frame_header(avctx, buf, buf_size);
if (frame_size < 0)
@ -95,11 +101,18 @@ static int s302m_decode_frame(AVCodecContext *avctx, void *data,
buf_size -= AES3_HEADER_LEN;
buf += AES3_HEADER_LEN;
if (*data_size < 4 * buf_size * 8 / (avctx->bits_per_coded_sample + 4))
return -1;
/* get output buffer */
block_size = (avctx->bits_per_coded_sample + 4) / 4;
s->frame.nb_samples = 2 * (buf_size / block_size) / avctx->channels;
if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
}
buf_size = (s->frame.nb_samples * avctx->channels / 2) * block_size;
if (avctx->bits_per_coded_sample == 24) {
uint32_t *o = data;
uint32_t *o = (uint32_t *)s->frame.data[0];
for (; buf_size > 6; buf_size -= 7) {
*o++ = (av_reverse[buf[2]] << 24) |
(av_reverse[buf[1]] << 16) |
@ -110,9 +123,8 @@ static int s302m_decode_frame(AVCodecContext *avctx, void *data,
(av_reverse[buf[3] & 0x0f] << 4);
buf += 7;
}
*data_size = (uint8_t*) o - (uint8_t*) data;
} else if (avctx->bits_per_coded_sample == 20) {
uint32_t *o = data;
uint32_t *o = (uint32_t *)s->frame.data[0];
for (; buf_size > 5; buf_size -= 6) {
*o++ = (av_reverse[buf[2] & 0xf0] << 28) |
(av_reverse[buf[1]] << 20) |
@ -122,9 +134,8 @@ static int s302m_decode_frame(AVCodecContext *avctx, void *data,
(av_reverse[buf[3]] << 12);
buf += 6;
}
*data_size = (uint8_t*) o - (uint8_t*) data;
} else {
uint16_t *o = data;
uint16_t *o = (uint16_t *)s->frame.data[0];
for (; buf_size > 4; buf_size -= 5) {
*o++ = (av_reverse[buf[1]] << 8) |
av_reverse[buf[0]];
@ -133,10 +144,22 @@ static int s302m_decode_frame(AVCodecContext *avctx, void *data,
(av_reverse[buf[2]] >> 4);
buf += 5;
}
*data_size = (uint8_t*) o - (uint8_t*) data;
}
return buf - avpkt->data;
*got_frame_ptr = 1;
*(AVFrame *)data = s->frame;
return avpkt->size;
}
static int s302m_decode_init(AVCodecContext *avctx)
{
S302MDecodeContext *s = avctx->priv_data;
avcodec_get_frame_defaults(&s->frame);
avctx->coded_frame = &s->frame;
return 0;
}
@ -144,6 +167,9 @@ AVCodec ff_s302m_decoder = {
.name = "s302m",
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_S302M,
.priv_data_size = sizeof(S302MDecodeContext),
.init = s302m_decode_init,
.decode = s302m_decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("SMPTE 302M"),
};