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

pcm-mpeg: convert to bytestream2 API

Browse Source 
Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
Paul B Mahol 2012-03-12 20:09:04 +00:00 committed by Janne Grunau
parent 8a6037c390
commit bd3e07c82a
1 changed files with 56 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

110
libavcodec/pcm-mpeg.c
View File

@ -139,6 +139,7 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data,
const uint8_t *src = avpkt->data; const uint8_t *src = avpkt->data;
int buf_size = avpkt->size; int buf_size = avpkt->size;
PCMBRDecode *s = avctx->priv_data; PCMBRDecode *s = avctx->priv_data;
GetByteContext gb;
int num_source_channels, channel, retval; int num_source_channels, channel, retval;
int sample_size, samples; int sample_size, samples;
int16_t *dst16; int16_t *dst16;
@ -154,6 +155,8 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data,
src += 4; src += 4;
buf_size -= 4; buf_size -= 4;
bytestream2_init(&gb, src, buf_size);
/* There's always an even number of channels in the source */ /* There's always an even number of channels in the source */
num_source_channels = FFALIGN(avctx->channels, 2); num_source_channels = FFALIGN(avctx->channels, 2);
sample_size = (num_source_channels * (avctx->sample_fmt == AV_SAMPLE_FMT_S16 ? 16 : 24)) >> 3; sample_size = (num_source_channels * (avctx->sample_fmt == AV_SAMPLE_FMT_S16 ? 16 : 24)) >> 3;
@ -177,15 +180,15 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data,
samples *= num_source_channels; samples *= num_source_channels;
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) { if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
#if HAVE_BIGENDIAN #if HAVE_BIGENDIAN
memcpy(dst16, src, buf_size); bytestream2_get_buffer(&gb, dst16, buf_size);
#else #else
do { do {
*dst16++ = bytestream_get_be16(&src); *dst16++ = bytestream2_get_be16u(&gb);
} while (--samples); } while (--samples);
#endif #endif
} else { } else {
do { do {
*dst32++ = bytestream_get_be24(&src) << 8; *dst32++ = bytestream2_get_be24u(&gb) << 8;
} while (--samples); } while (--samples);
} }
break; break;
@ -197,24 +200,23 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data,
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) { if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
do { do {
#if HAVE_BIGENDIAN #if HAVE_BIGENDIAN
memcpy(dst16, src, avctx->channels * 2); bytestream2_get_buffer(&gb, dst16, avctx->channels * 2);
dst16 += avctx->channels; dst16 += avctx->channels;
src += sample_size;
#else #else
channel = avctx->channels; channel = avctx->channels;
do { do {
*dst16++ = bytestream_get_be16(&src); *dst16++ = bytestream2_get_be16u(&gb);
} while (--channel); } while (--channel);
src += 2;
#endif #endif
bytestream2_skip(&gb, 2);
} while (--samples); } while (--samples);
} else { } else {
do { do {
channel = avctx->channels; channel = avctx->channels;
do { do {
*dst32++ = bytestream_get_be24(&src) << 8; *dst32++ = bytestream2_get_be24u(&gb) << 8;
} while (--channel); } while (--channel);
src += 3; bytestream2_skip(&gb, 3);
} while (--samples); } while (--samples);
} }
break; break;
@ -222,22 +224,22 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data,
case AV_CH_LAYOUT_5POINT1: case AV_CH_LAYOUT_5POINT1:
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) { if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
do { do {
dst16[0] = bytestream_get_be16(&src); dst16[0] = bytestream2_get_be16u(&gb);
dst16[1] = bytestream_get_be16(&src); dst16[1] = bytestream2_get_be16u(&gb);
dst16[2] = bytestream_get_be16(&src); dst16[2] = bytestream2_get_be16u(&gb);
dst16[4] = bytestream_get_be16(&src); dst16[4] = bytestream2_get_be16u(&gb);
dst16[5] = bytestream_get_be16(&src); dst16[5] = bytestream2_get_be16u(&gb);
dst16[3] = bytestream_get_be16(&src); dst16[3] = bytestream2_get_be16u(&gb);
dst16 += 6; dst16 += 6;
} while (--samples); } while (--samples);
} else { } else {
do { do {
dst32[0] = bytestream_get_be24(&src) << 8; dst32[0] = bytestream2_get_be24u(&gb) << 8;
dst32[1] = bytestream_get_be24(&src) << 8; dst32[1] = bytestream2_get_be24u(&gb) << 8;
dst32[2] = bytestream_get_be24(&src) << 8; dst32[2] = bytestream2_get_be24u(&gb) << 8;
dst32[4] = bytestream_get_be24(&src) << 8; dst32[4] = bytestream2_get_be24u(&gb) << 8;
dst32[5] = bytestream_get_be24(&src) << 8; dst32[5] = bytestream2_get_be24u(&gb) << 8;
dst32[3] = bytestream_get_be24(&src) << 8; dst32[3] = bytestream2_get_be24u(&gb) << 8;
dst32 += 6; dst32 += 6;
} while (--samples); } while (--samples);
} }
@ -246,27 +248,27 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data,
case AV_CH_LAYOUT_7POINT0: case AV_CH_LAYOUT_7POINT0:
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) { if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
do { do {
dst16[0] = bytestream_get_be16(&src); dst16[0] = bytestream2_get_be16u(&gb);
dst16[1] = bytestream_get_be16(&src); dst16[1] = bytestream2_get_be16u(&gb);
dst16[2] = bytestream_get_be16(&src); dst16[2] = bytestream2_get_be16u(&gb);
dst16[5] = bytestream_get_be16(&src); dst16[5] = bytestream2_get_be16u(&gb);
dst16[3] = bytestream_get_be16(&src); dst16[3] = bytestream2_get_be16u(&gb);
dst16[4] = bytestream_get_be16(&src); dst16[4] = bytestream2_get_be16u(&gb);
dst16[6] = bytestream_get_be16(&src); dst16[6] = bytestream2_get_be16u(&gb);
dst16 += 7; dst16 += 7;
src += 2; bytestream2_skip(&gb, 2);
} while (--samples); } while (--samples);
} else { } else {
do { do {
dst32[0] = bytestream_get_be24(&src) << 8; dst32[0] = bytestream2_get_be24u(&gb) << 8;
dst32[1] = bytestream_get_be24(&src) << 8; dst32[1] = bytestream2_get_be24u(&gb) << 8;
dst32[2] = bytestream_get_be24(&src) << 8; dst32[2] = bytestream2_get_be24u(&gb) << 8;
dst32[5] = bytestream_get_be24(&src) << 8; dst32[5] = bytestream2_get_be24u(&gb) << 8;
dst32[3] = bytestream_get_be24(&src) << 8; dst32[3] = bytestream2_get_be24u(&gb) << 8;
dst32[4] = bytestream_get_be24(&src) << 8; dst32[4] = bytestream2_get_be24u(&gb) << 8;
dst32[6] = bytestream_get_be24(&src) << 8; dst32[6] = bytestream2_get_be24u(&gb) << 8;
dst32 += 7; dst32 += 7;
src += 3; bytestream2_skip(&gb, 3);
} while (--samples); } while (--samples);
} }
break; break;
@ -274,26 +276,26 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data,
case AV_CH_LAYOUT_7POINT1: case AV_CH_LAYOUT_7POINT1:
if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) { if (AV_SAMPLE_FMT_S16 == avctx->sample_fmt) {
do { do {
dst16[0] = bytestream_get_be16(&src); dst16[0] = bytestream2_get_be16u(&gb);
dst16[1] = bytestream_get_be16(&src); dst16[1] = bytestream2_get_be16u(&gb);
dst16[2] = bytestream_get_be16(&src); dst16[2] = bytestream2_get_be16u(&gb);
dst16[6] = bytestream_get_be16(&src); dst16[6] = bytestream2_get_be16u(&gb);
dst16[4] = bytestream_get_be16(&src); dst16[4] = bytestream2_get_be16u(&gb);
dst16[5] = bytestream_get_be16(&src); dst16[5] = bytestream2_get_be16u(&gb);
dst16[7] = bytestream_get_be16(&src); dst16[7] = bytestream2_get_be16u(&gb);
dst16[3] = bytestream_get_be16(&src); dst16[3] = bytestream2_get_be16u(&gb);
dst16 += 8; dst16 += 8;
} while (--samples); } while (--samples);
} else { } else {
do { do {
dst32[0] = bytestream_get_be24(&src) << 8; dst32[0] = bytestream2_get_be24u(&gb) << 8;
dst32[1] = bytestream_get_be24(&src) << 8; dst32[1] = bytestream2_get_be24u(&gb) << 8;
dst32[2] = bytestream_get_be24(&src) << 8; dst32[2] = bytestream2_get_be24u(&gb) << 8;
dst32[6] = bytestream_get_be24(&src) << 8; dst32[6] = bytestream2_get_be24u(&gb) << 8;
dst32[4] = bytestream_get_be24(&src) << 8; dst32[4] = bytestream2_get_be24u(&gb) << 8;
dst32[5] = bytestream_get_be24(&src) << 8; dst32[5] = bytestream2_get_be24u(&gb) << 8;
dst32[7] = bytestream_get_be24(&src) << 8; dst32[7] = bytestream2_get_be24u(&gb) << 8;
dst32[3] = bytestream_get_be24(&src) << 8; dst32[3] = bytestream2_get_be24u(&gb) << 8;
dst32 += 8; dst32 += 8;
} while (--samples); } while (--samples);
} }
@ -304,7 +306,7 @@ static int pcm_bluray_decode_frame(AVCodecContext *avctx, void *data,
*got_frame_ptr = 1; *got_frame_ptr = 1;
*(AVFrame *)data = s->frame; *(AVFrame *)data = s->frame;
retval = src - avpkt->data; retval = bytestream2_tell(&gb);
if (avctx->debug & FF_DEBUG_BITSTREAM) if (avctx->debug & FF_DEBUG_BITSTREAM)
av_dlog(avctx, "pcm_bluray_decode_frame: decoded %d -> %d bytes\n", av_dlog(avctx, "pcm_bluray_decode_frame: decoded %d -> %d bytes\n",
retval, buf_size); retval, buf_size);