Index: Changelog =================================================================== --- Changelog (revision 19700) +++ Changelog (working copy) @@ -35,6 +35,7 @@ - IEC-61937 compatible Muxer - TwinVQ decoder - Bluray (PGS) subtitle decoder +- LPCM support in MPEG-TS (HDMV RID as found on Blu-ray disks) Index: libavcodec/allcodecs.c =================================================================== --- libavcodec/allcodecs.c (revision 19700) +++ libavcodec/allcodecs.c (working copy) @@ -238,6 +238,7 @@ /* PCM codecs */ REGISTER_ENCDEC (PCM_ALAW, pcm_alaw); + REGISTER_DECODER (PCM_BLURAY, pcm_bluray); REGISTER_DECODER (PCM_DVD, pcm_dvd); REGISTER_ENCDEC (PCM_F32BE, pcm_f32be); REGISTER_ENCDEC (PCM_F32LE, pcm_f32le); Index: libavcodec/avcodec.h =================================================================== --- libavcodec/avcodec.h (revision 19700) +++ libavcodec/avcodec.h (working copy) @@ -224,6 +224,7 @@ CODEC_ID_PCM_F32LE, CODEC_ID_PCM_F64BE, CODEC_ID_PCM_F64LE, + CODEC_ID_PCM_BLURAY, /* various ADPCM codecs */ CODEC_ID_ADPCM_IMA_QT= 0x11000, @@ -395,6 +396,7 @@ #define CH_LAYOUT_5POINT1 (CH_LAYOUT_5POINT0|CH_LOW_FREQUENCY) #define CH_LAYOUT_5POINT0_BACK (CH_LAYOUT_SURROUND|CH_BACK_LEFT|CH_BACK_RIGHT) #define CH_LAYOUT_5POINT1_BACK (CH_LAYOUT_5POINT0_BACK|CH_LOW_FREQUENCY) +#define CH_LAYOUT_7POINT0 (CH_LAYOUT_5POINT0|CH_BACK_LEFT|CH_BACK_RIGHT) #define CH_LAYOUT_7POINT1 (CH_LAYOUT_5POINT1|CH_BACK_LEFT|CH_BACK_RIGHT) #define CH_LAYOUT_7POINT1_WIDE (CH_LAYOUT_5POINT1_BACK|\ CH_FRONT_LEFT_OF_CENTER|CH_FRONT_RIGHT_OF_CENTER) Index: libavcodec/Makefile =================================================================== --- libavcodec/Makefile (revision 19700) +++ libavcodec/Makefile (working copy) @@ -272,6 +272,7 @@ # (AD)PCM decoders/encoders OBJS-$(CONFIG_PCM_ALAW_DECODER) += pcm.o OBJS-$(CONFIG_PCM_ALAW_ENCODER) += pcm.o +OBJS-$(CONFIG_PCM_BLURAY_DECODER) += pcm-mpeg.o OBJS-$(CONFIG_PCM_DVD_DECODER) += pcm.o OBJS-$(CONFIG_PCM_DVD_ENCODER) += pcm.o OBJS-$(CONFIG_PCM_F32BE_DECODER) += pcm.o Index: libavcodec/pcm-mpeg.c =================================================================== --- libavcodec/pcm-mpeg.c (revision 0) +++ libavcodec/pcm-mpeg.c (revision 0) @@ -0,0 +1,316 @@ +/* + * LPCM codecs for PCM formats found in MPEG streams + * Copyright (c) 2009 Christian Schmidt + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file libavcodec/pcm-mpeg.c + * PCM codecs for encodings found in MPEG streams (DVD/Blu-ray) + */ + +#include "avcodec.h" +#include "bytestream.h" + +/* + * Channel Mapping according to + * Blu-ray Disc Read-Only Format Version 1 + * Part 3: Audio Visual Basic Specifications + * mono M1 X + * stereo L R + * 3/0 L R C X + * 2/1 L R S X + * 3/1 L R C S + * 2/2 L R LS RS + * 3/2 L R C LS RS X + * 3/2+lfe L R C LS RS lfe + * 3/4 L R C LS Rls Rrs RS X + * 3/4+lfe L R C LS Rls Rrs RS lfe + */ + +/** + * Parse the header of a LPCM frame read from a MPEG-TS stream + * @param avctx the codec context + * @param header pointer to the first four bytes of the data packet + */ +static int pcm_bluray_parse_header(AVCodecContext *avctx, + const uint8_t *header) +{ + static const uint8_t bits_per_samples[4] = { 0, 16, 20, 24 }; + static const uint32_t channel_layouts[16] = { + 0, CH_LAYOUT_MONO, 0, CH_LAYOUT_STEREO, CH_LAYOUT_SURROUND, + CH_LAYOUT_2_1, CH_LAYOUT_4POINT0, CH_LAYOUT_2_2, CH_LAYOUT_5POINT0, + CH_LAYOUT_5POINT1, CH_LAYOUT_7POINT0, CH_LAYOUT_7POINT1, 0, 0, 0, 0 + }; + static const uint8_t channels[16] = { + 0, 1, 0, 2, 3, 3, 4, 4, 5, 6, 7, 8, 0, 0, 0, 0 + }; + uint8_t channel_layout = header[2] >> 4; + + if(avctx->debug & FF_DEBUG_PICT_INFO) + dprintf(avctx, "pcm_bluray_parse_header: header = %02x%02x%02x%02x\n", + header[0], header[1], header[2], header[3]); + + /* get the sample depth and derive the sample format from it */ + avctx->bits_per_coded_sample = bits_per_samples[header[3] >> 6]; + if (!avctx->bits_per_coded_sample) { + av_log(avctx, AV_LOG_ERROR, "unsupported sample depth (0)\n"); + return -1; + } + avctx->sample_fmt = avctx->bits_per_coded_sample == 16 ? SAMPLE_FMT_S16 : + SAMPLE_FMT_S32; + + /* get the sample rate. Not all values are known or exist. */ + switch (header[2] & 0x0f) { + case 1: + avctx->sample_rate = 48000; + break; + case 4: + avctx->sample_rate = 96000; + break; + case 5: + avctx->sample_rate = 192000; + break; + default: + avctx->sample_rate = 0; + av_log(avctx, AV_LOG_ERROR, "unsupported sample rate (%d)\n", + header[2] & 0x0f); + return -1; + } + + /* + * get the channel number (and mapping). Not all values are known or exist. + * It must be noted that the number of channels in the MPEG stream can + * differ from the actual meaningful number, e.g. mono audio still has two + * channels, one being empty. + */ + avctx->channel_layout = channel_layouts[channel_layout]; + avctx->channels = channels[channel_layout]; + if (!avctx->channels) { + av_log(avctx, AV_LOG_ERROR, "unsupported channel configuration (%d)\n", + channel_layout); + return -1; + } + + avctx->bit_rate = avctx->channels * avctx->sample_rate * + avctx->bits_per_coded_sample; + + if(avctx->debug & FF_DEBUG_PICT_INFO) + dprintf(avctx, + "pcm_bluray_parse_header: %d channels, %d bits per sample, %d kHz, %d kbit\n", + avctx->channels, avctx->bits_per_coded_sample, + avctx->sample_rate, avctx->bit_rate); + return 0; +} + +static int pcm_bluray_decode_frame(AVCodecContext *avctx, + void *data, + int *data_size, + AVPacket *avpkt) +{ + const uint8_t *src = avpkt->data; + int buf_size = avpkt->size; + int num_source_channels, channel, retval; + int sample_size, samples, output_size; + int16_t *dst16 = data; + int32_t *dst32 = data; + + if (buf_size < 4) { + av_log(avctx, AV_LOG_ERROR, "PCM packet too small\n"); + return -1; + } + + if (pcm_bluray_parse_header(avctx, src)) + return -1; + src += 4; + buf_size -= 4; + + /* There's always an even number of channels in the source */ + num_source_channels = FFALIGN(avctx->channels, 2); + sample_size = (num_source_channels * avctx->bits_per_coded_sample) >> 3; + samples = buf_size / sample_size; + + if(avctx->debug & FF_DEBUG_BITSTREAM) + dprintf(avctx, + "pcm_bluray_decode_frame: c: %d sc: %d s: %d in: %d ds: %d\n", + avctx->channels, num_source_channels, num_samples, buf_size, + *data_size); + + output_size = samples * avctx->channels * + (avctx->sample_fmt == SAMPLE_FMT_S32 ? 4 : 2); + if (output_size > *data_size) { + av_log(avctx, AV_LOG_ERROR, + "Insufficient output buffer space (%d bytes, needed %d bytes)\n", + *data_size, output_size); + return -1; + } + *data_size = output_size; + + if (samples) { + switch (avctx->channel_layout) { + /* cases with same number of source and coded channels */ + case CH_LAYOUT_STEREO: + case CH_LAYOUT_4POINT0: + case CH_LAYOUT_2_2: + samples *= num_source_channels; + if (SAMPLE_FMT_S16 == avctx->sample_fmt) { +#if HAVE_BIGENDIAN + memcpy(dst16, src, output_size); +#else + do { + *dst16++ = bytestream_get_be16(&src); + } while (--samples); +#endif + } else { + do { + *dst32++ = bytestream_get_be24(&src) << 8; + } while (--samples); + } + break; + /* cases where number of source channels = coded channels + 1 */ + case CH_LAYOUT_MONO: + case CH_LAYOUT_SURROUND: + case CH_LAYOUT_2_1: + case CH_LAYOUT_5POINT0: + if (SAMPLE_FMT_S16 == avctx->sample_fmt) { + do { +#if HAVE_BIGENDIAN + memcpy(dst16, src, avctx->channels * 2; + dst16 += avctx->channels; + src += sample_size; +#else + channel = avctx->channels; + do { + *dst16++ = bytestream_get_be16(&src); + } while (--channel); + src += 2; +#endif + } while (--samples); + } else { + do { + channel = avctx->channels; + do { + *dst32++ = bytestream_get_be24(&src) << 8; + } while (--channel); + src += 3; + } while (--samples); + } + break; + /* remapping: L, R, C, LBack, RBack, LF */ + case CH_LAYOUT_5POINT1: + if (SAMPLE_FMT_S16 == avctx->sample_fmt) { + do { + dst16[0] = bytestream_get_be16(&src); + dst16[1] = bytestream_get_be16(&src); + dst16[2] = bytestream_get_be16(&src); + dst16[4] = bytestream_get_be16(&src); + dst16[5] = bytestream_get_be16(&src); + dst16[3] = bytestream_get_be16(&src); + dst16 += 6; + } while (--samples); + } else { + do { + dst32[0] = bytestream_get_be24(&src) << 8; + dst32[1] = bytestream_get_be24(&src) << 8; + dst32[2] = bytestream_get_be24(&src) << 8; + dst32[4] = bytestream_get_be24(&src) << 8; + dst32[5] = bytestream_get_be24(&src) << 8; + dst32[3] = bytestream_get_be24(&src) << 8; + dst32 += 6; + } while (--samples); + } + break; + /* remapping: L, R, C, LSide, LBack, RBack, RSide, */ + case CH_LAYOUT_7POINT0: + if (SAMPLE_FMT_S16 == avctx->sample_fmt) { + do { + dst16[0] = bytestream_get_be16(&src); + dst16[1] = bytestream_get_be16(&src); + dst16[2] = bytestream_get_be16(&src); + dst16[5] = bytestream_get_be16(&src); + dst16[3] = bytestream_get_be16(&src); + dst16[4] = bytestream_get_be16(&src); + dst16[6] = bytestream_get_be16(&src); + dst16 += 7; + src += 2; + } while (--samples); + } else { + do { + dst32[0] = bytestream_get_be24(&src) << 8; + dst32[1] = bytestream_get_be24(&src) << 8; + dst32[2] = bytestream_get_be24(&src) << 8; + dst32[5] = bytestream_get_be24(&src) << 8; + dst32[3] = bytestream_get_be24(&src) << 8; + dst32[4] = bytestream_get_be24(&src) << 8; + dst32[6] = bytestream_get_be24(&src) << 8; + dst32 += 7; + src += 3; + } while (--samples); + } + break; + /* remapping: L, R, C, LSide, LBack, RBack, RSide, LF */ + case CH_LAYOUT_7POINT1: + if (SAMPLE_FMT_S16 == avctx->sample_fmt) { + do { + dst16[0] = bytestream_get_be16(&src); + dst16[1] = bytestream_get_be16(&src); + dst16[2] = bytestream_get_be16(&src); + dst16[6] = bytestream_get_be16(&src); + dst16[4] = bytestream_get_be16(&src); + dst16[5] = bytestream_get_be16(&src); + dst16[7] = bytestream_get_be16(&src); + dst16[3] = bytestream_get_be16(&src); + dst16 += 8; + } while (--samples); + } else { + do { + dst32[0] = bytestream_get_be24(&src) << 8; + dst32[1] = bytestream_get_be24(&src) << 8; + dst32[2] = bytestream_get_be24(&src) << 8; + dst32[6] = bytestream_get_be24(&src) << 8; + dst32[4] = bytestream_get_be24(&src) << 8; + dst32[5] = bytestream_get_be24(&src) << 8; + dst32[7] = bytestream_get_be24(&src) << 8; + dst32[3] = bytestream_get_be24(&src) << 8; + dst32 += 8; + } while (--samples); + } + break; + } + } + + retval = src - avpkt->data; + if(avctx->debug & FF_DEBUG_BITSTREAM) + dprintf(avctx, "pcm_bluray_decode_frame: decoded %d -> %d bytes\n", + retval, *data_size); + return retval; +} + +AVCodec pcm_bluray_decoder = { + "pcm_bluray", + CODEC_TYPE_AUDIO, + CODEC_ID_PCM_BLURAY, + 0, + NULL, + NULL, + NULL, + pcm_bluray_decode_frame, + .sample_fmts = (enum SampleFormat[]){SAMPLE_FMT_S16, SAMPLE_FMT_S32, + SAMPLE_FMT_NONE}, + .long_name = NULL_IF_CONFIG_SMALL("PCM signed 16|20|24-bit big-endian for Blu-ray media"), +}; Index: doc/general.texi =================================================================== --- doc/general.texi (revision 19700) +++ doc/general.texi (working copy) @@ -583,6 +583,7 @@ @item PCM signed 24-bit little-endian @tab X @tab X @item PCM signed 32-bit big-endian @tab X @tab X @item PCM signed 32-bit little-endian @tab X @tab X +@item PCM signed 16/20/24-bit big-endian in MPEG-TS @tab @tab X @item PCM unsigned 8-bit @tab X @tab X @item PCM unsigned 16-bit big-endian @tab X @tab X @item PCM unsigned 16-bit little-endian @tab X @tab X Index: libavformat/mpegts.c =================================================================== --- libavformat/mpegts.c (revision 19700) +++ libavformat/mpegts.c (working copy) @@ -505,6 +505,7 @@ }; static const StreamType HDMV_types[] = { + { 0x80, CODEC_TYPE_AUDIO, CODEC_ID_PCM_BLURAY }, { 0x81, CODEC_TYPE_AUDIO, CODEC_ID_AC3 }, { 0x82, CODEC_TYPE_AUDIO, CODEC_ID_DTS }, { 0x90, CODEC_TYPE_SUBTITLE, CODEC_ID_HDMV_PGS_SUBTITLE },