From 86837f45cd69ba0f565383b2a8ccb5d4b2906b6e Mon Sep 17 00:00:00 2001 From: Paul Adenot Date: Tue, 8 Aug 2023 12:12:41 +0000 Subject: [PATCH] Bug 1826382 - Vendor necessary files to decode all pcm types needed using ffmpeg. r=alwu,media-playback-reviewers Differential Revision: https://phabricator.services.mozilla.com/D174655 --- .../platforms/ffmpeg/FFmpegAudioDecoder.cpp | 39 +- .../platforms/ffmpeg/FFmpegAudioDecoder.h | 6 +- .../platforms/ffmpeg/FFmpegDecoderModule.h | 4 +- .../platforms/ffmpeg/FFmpegLibWrapper.cpp | 2 + dom/media/platforms/ffmpeg/FFmpegLibWrapper.h | 11 +- media/ffvpx/config_components_audio_only.h | 14 +- media/ffvpx/config_components_audio_video.h | 14 +- media/ffvpx/libavcodec/codec_list.c | 21 + media/ffvpx/libavcodec/moz.build | 1 + media/ffvpx/libavcodec/pcm.c | 630 ++++++++++++++++++ media/ffvpx/libavcodec/pcm_tablegen.h | 143 ++++ media/ffvpx/libavutil/avutil.symbols | 6 +- 12 files changed, 859 insertions(+), 32 deletions(-) create mode 100644 media/ffvpx/libavcodec/pcm.c create mode 100644 media/ffvpx/libavcodec/pcm_tablegen.h diff --git a/dom/media/platforms/ffmpeg/FFmpegAudioDecoder.cpp b/dom/media/platforms/ffmpeg/FFmpegAudioDecoder.cpp index 7de8d2cf4bf31..568147bbf1a49 100644 --- a/dom/media/platforms/ffmpeg/FFmpegAudioDecoder.cpp +++ b/dom/media/platforms/ffmpeg/FFmpegAudioDecoder.cpp @@ -9,6 +9,9 @@ #include "TimeUnits.h" #include "VideoUtils.h" #include "BufferReader.h" +#if defined(FFVPX_VERSION) +# include "libavutil/channel_layout.h" +#endif #include "mozilla/StaticPrefs_media.h" #include "mozilla/Telemetry.h" @@ -17,14 +20,15 @@ namespace mozilla { using TimeUnit = media::TimeUnit; FFmpegAudioDecoder::FFmpegAudioDecoder(FFmpegLibWrapper* aLib, - const AudioInfo& aConfig) - : FFmpegDataDecoder(aLib, GetCodecId(aConfig.mMimeType)) { + const AudioInfo& aInfo) + : FFmpegDataDecoder(aLib, GetCodecId(aInfo.mMimeType, aInfo)), + mAudioInfo(aInfo) { MOZ_COUNT_CTOR(FFmpegAudioDecoder); if (mCodecID == AV_CODEC_ID_AAC && - aConfig.mCodecSpecificConfig.is()) { + aInfo.mCodecSpecificConfig.is()) { const AacCodecSpecificData& aacCodecSpecificData = - aConfig.mCodecSpecificConfig.as(); + aInfo.mCodecSpecificConfig.as(); mExtraData = new MediaByteBuffer; // Ffmpeg expects the DecoderConfigDescriptor blob. mExtraData->AppendElements( @@ -40,13 +44,13 @@ FFmpegAudioDecoder::FFmpegAudioDecoder(FFmpegLibWrapper* aLib, if (mCodecID == AV_CODEC_ID_FLAC) { MOZ_DIAGNOSTIC_ASSERT( - aConfig.mCodecSpecificConfig.is()); + aInfo.mCodecSpecificConfig.is()); // Gracefully handle bad data. If don't hit the preceding assert once this // has been shipped for awhile, we can remove it and make the following code // non-conditional. - if (aConfig.mCodecSpecificConfig.is()) { + if (aInfo.mCodecSpecificConfig.is()) { const FlacCodecSpecificData& flacCodecSpecificData = - aConfig.mCodecSpecificConfig.as(); + aInfo.mCodecSpecificConfig.as(); if (flacCodecSpecificData.mStreamInfoBinaryBlob->IsEmpty()) { // Flac files without headers will be missing stream info. In this case // we don't want to feed ffmpeg empty extra data as it will fail, just @@ -63,7 +67,7 @@ FFmpegAudioDecoder::FFmpegAudioDecoder(FFmpegLibWrapper* aLib, // Vorbis is handled by this case. RefPtr audioCodecSpecificBinaryBlob = - GetAudioCodecSpecificBlob(aConfig.mCodecSpecificConfig); + GetAudioCodecSpecificBlob(aInfo.mCodecSpecificConfig); if (audioCodecSpecificBinaryBlob && audioCodecSpecificBinaryBlob->Length()) { // Use a new MediaByteBuffer as the object will be modified during // initialization. @@ -105,6 +109,21 @@ void FFmpegAudioDecoder::InitCodecContext() { } mCodecContext->sample_rate = AssertedCast(mAudioInfo.mRate); #endif +#ifdef FFVPX_VERSION + // AudioInfo's layout first 32-bits are bit-per-bit compatible with + // WAVEFORMATEXTENSIBLE and FFmpeg's AVChannel enum. We can cast here. + mCodecContext->ch_layout.nb_channels = + AssertedCast(mAudioInfo.mChannels); + if (mAudioInfo.mChannelMap != AudioConfig::ChannelLayout::UNKNOWN_MAP) { + mLib->av_channel_layout_from_mask( + &mCodecContext->ch_layout, + static_cast(mAudioInfo.mChannelMap)); + } else { + mLib->av_channel_layout_default(&mCodecContext->ch_layout, + AssertedCast(mAudioInfo.mChannels)); + } + mCodecContext->sample_rate = AssertedCast(mAudioInfo.mRate); +#endif } static AlignedAudioBuffer CopyAndPackAudio(AVFrame* aFrame, @@ -414,8 +433,8 @@ MediaResult FFmpegAudioDecoder::DoDecode(MediaRawData* aSample, return NS_OK; } -AVCodecID FFmpegAudioDecoder::GetCodecId( - const nsACString& aMimeType) { +AVCodecID FFmpegAudioDecoder::GetCodecId(const nsACString& aMimeType, + const AudioInfo& aInfo) { if (aMimeType.EqualsLiteral("audio/mpeg")) { #ifdef FFVPX_VERSION if (!StaticPrefs::media_ffvpx_mp3_enabled()) { diff --git a/dom/media/platforms/ffmpeg/FFmpegAudioDecoder.h b/dom/media/platforms/ffmpeg/FFmpegAudioDecoder.h index 7e62e2a9be999..e6750f5d40def 100644 --- a/dom/media/platforms/ffmpeg/FFmpegAudioDecoder.h +++ b/dom/media/platforms/ffmpeg/FFmpegAudioDecoder.h @@ -25,12 +25,13 @@ class FFmpegAudioDecoder : public FFmpegDataDecoder, public DecoderDoctorLifeLogger> { public: - FFmpegAudioDecoder(FFmpegLibWrapper* aLib, const AudioInfo& aConfig); + FFmpegAudioDecoder(FFmpegLibWrapper* aLib, const AudioInfo& aInfo); virtual ~FFmpegAudioDecoder(); RefPtr Init() override; void InitCodecContext() MOZ_REQUIRES(sMutex) override; - static AVCodecID GetCodecId(const nsACString& aMimeType); + static AVCodecID GetCodecId(const nsACString& aMimeType, + const AudioInfo& aInfo); nsCString GetDescriptionName() const override { #ifdef USING_MOZFFVPX return "ffvpx audio decoder"_ns; @@ -49,6 +50,7 @@ class FFmpegAudioDecoder MediaResult PostProcessOutput(bool aDecoded, MediaRawData* aSample, DecodedData& aResults, bool* aGotFrame, size_t aSamplePositionOffset); + const AudioInfo mAudioInfo; }; } // namespace mozilla diff --git a/dom/media/platforms/ffmpeg/FFmpegDecoderModule.h b/dom/media/platforms/ffmpeg/FFmpegDecoderModule.h index 3b1a5b673abfe..7c8683d07f724 100644 --- a/dom/media/platforms/ffmpeg/FFmpegDecoderModule.h +++ b/dom/media/platforms/ffmpeg/FFmpegDecoderModule.h @@ -90,7 +90,9 @@ class FFmpegDecoderModule : public PlatformDecoderModule { } AVCodecID videoCodec = FFmpegVideoDecoder::GetCodecId(mimeType); - AVCodecID audioCodec = FFmpegAudioDecoder::GetCodecId(mimeType); + AVCodecID audioCodec = FFmpegAudioDecoder::GetCodecId( + mimeType, + trackInfo.GetAsAudioInfo() ? *trackInfo.GetAsAudioInfo() : AudioInfo()); if (audioCodec == AV_CODEC_ID_NONE && videoCodec == AV_CODEC_ID_NONE) { MOZ_LOG(sPDMLog, LogLevel::Debug, ("FFmpeg decoder rejects requested type '%s'", diff --git a/dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp b/dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp index 5ab08b10f78e3..098a39a9ec5d4 100644 --- a/dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp +++ b/dom/media/platforms/ffmpeg/FFmpegLibWrapper.cpp @@ -182,6 +182,8 @@ FFmpegLibWrapper::LinkResult FFmpegLibWrapper::Link() { AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 | AV_FUNC_AVUTIL_60)) AV_FUNC(av_image_check_size, AV_FUNC_AVUTIL_ALL) AV_FUNC(av_image_get_buffer_size, AV_FUNC_AVUTIL_ALL) + AV_FUNC_OPTION(av_channel_layout_default, AV_FUNC_AVUTIL_60) + AV_FUNC_OPTION(av_channel_layout_from_mask, AV_FUNC_AVUTIL_60) AV_FUNC_OPTION(av_buffer_get_opaque, (AV_FUNC_AVUTIL_56 | AV_FUNC_AVUTIL_57 | AV_FUNC_AVUTIL_58 | AV_FUNC_AVUTIL_59 | AV_FUNC_AVUTIL_60)) diff --git a/dom/media/platforms/ffmpeg/FFmpegLibWrapper.h b/dom/media/platforms/ffmpeg/FFmpegLibWrapper.h index 46e1d0775abd9..cbde46d8fe4f5 100644 --- a/dom/media/platforms/ffmpeg/FFmpegLibWrapper.h +++ b/dom/media/platforms/ffmpeg/FFmpegLibWrapper.h @@ -17,6 +17,7 @@ struct AVPacket; struct AVDictionary; struct AVCodecParserContext; struct PRLibrary; +struct AVChannelLayout; #ifdef MOZ_WIDGET_GTK struct AVCodecHWConfig; struct AVVAAPIHWConfig; @@ -123,6 +124,13 @@ struct MOZ_ONLY_USED_TO_AVOID_STATIC_CONSTRUCTORS FFmpegLibWrapper { int (*av_image_get_buffer_size)(int pix_fmt, int width, int height, int align); const char* (*av_get_sample_fmt_name)(int sample_fmt); + void (*av_channel_layout_default)(AVChannelLayout* ch_layout, + int nb_channels); + void (*av_channel_layout_from_mask)(AVChannelLayout* ch_layout, + uint64_t mask); + int (*av_dict_set)(AVDictionary** pm, const char* key, const char* value, + int flags); + void (*av_dict_free)(AVDictionary** m); // libavutil v55 and later only AVFrame* (*av_frame_alloc)(); @@ -156,9 +164,6 @@ struct MOZ_ONLY_USED_TO_AVOID_STATIC_CONSTRUCTORS FFmpegLibWrapper { int (*av_hwdevice_ctx_create_derived)(AVBufferRef** dst_ctx, int type, AVBufferRef* src_ctx, int flags); AVBufferRef* (*av_hwframe_ctx_alloc)(AVBufferRef* device_ctx); - int (*av_dict_set)(AVDictionary** pm, const char* key, const char* value, - int flags); - void (*av_dict_free)(AVDictionary** m); const char* (*avcodec_get_name)(int id); char* (*av_get_pix_fmt_string)(char* buf, int buf_size, int pix_fmt); diff --git a/media/ffvpx/config_components_audio_only.h b/media/ffvpx/config_components_audio_only.h index 87c7db60cddb4..2a14e3ebaf1cc 100644 --- a/media/ffvpx/config_components_audio_only.h +++ b/media/ffvpx/config_components_audio_only.h @@ -424,34 +424,34 @@ #define CONFIG_WS_SND1_DECODER 0 #define CONFIG_XMA1_DECODER 0 #define CONFIG_XMA2_DECODER 0 -#define CONFIG_PCM_ALAW_DECODER 0 +#define CONFIG_PCM_ALAW_DECODER 1 #define CONFIG_PCM_BLURAY_DECODER 0 #define CONFIG_PCM_DVD_DECODER 0 #define CONFIG_PCM_F16LE_DECODER 0 #define CONFIG_PCM_F24LE_DECODER 0 #define CONFIG_PCM_F32BE_DECODER 0 -#define CONFIG_PCM_F32LE_DECODER 0 +#define CONFIG_PCM_F32LE_DECODER 1 #define CONFIG_PCM_F64BE_DECODER 0 #define CONFIG_PCM_F64LE_DECODER 0 #define CONFIG_PCM_LXF_DECODER 0 -#define CONFIG_PCM_MULAW_DECODER 0 +#define CONFIG_PCM_MULAW_DECODER 1 #define CONFIG_PCM_S8_DECODER 0 #define CONFIG_PCM_S8_PLANAR_DECODER 0 #define CONFIG_PCM_S16BE_DECODER 0 #define CONFIG_PCM_S16BE_PLANAR_DECODER 0 -#define CONFIG_PCM_S16LE_DECODER 0 +#define CONFIG_PCM_S16LE_DECODER 1 #define CONFIG_PCM_S16LE_PLANAR_DECODER 0 #define CONFIG_PCM_S24BE_DECODER 0 #define CONFIG_PCM_S24DAUD_DECODER 0 -#define CONFIG_PCM_S24LE_DECODER 0 +#define CONFIG_PCM_S24LE_DECODER 1 #define CONFIG_PCM_S24LE_PLANAR_DECODER 0 #define CONFIG_PCM_S32BE_DECODER 0 -#define CONFIG_PCM_S32LE_DECODER 0 +#define CONFIG_PCM_S32LE_DECODER 1 #define CONFIG_PCM_S32LE_PLANAR_DECODER 0 #define CONFIG_PCM_S64BE_DECODER 0 #define CONFIG_PCM_S64LE_DECODER 0 #define CONFIG_PCM_SGA_DECODER 0 -#define CONFIG_PCM_U8_DECODER 0 +#define CONFIG_PCM_U8_DECODER 1 #define CONFIG_PCM_U16BE_DECODER 0 #define CONFIG_PCM_U16LE_DECODER 0 #define CONFIG_PCM_U24BE_DECODER 0 diff --git a/media/ffvpx/config_components_audio_video.h b/media/ffvpx/config_components_audio_video.h index 527d7b499ac72..e152c6e5331b3 100644 --- a/media/ffvpx/config_components_audio_video.h +++ b/media/ffvpx/config_components_audio_video.h @@ -437,34 +437,34 @@ #define CONFIG_WS_SND1_DECODER 0 #define CONFIG_XMA1_DECODER 0 #define CONFIG_XMA2_DECODER 0 -#define CONFIG_PCM_ALAW_DECODER 0 +#define CONFIG_PCM_ALAW_DECODER 1 #define CONFIG_PCM_BLURAY_DECODER 0 #define CONFIG_PCM_DVD_DECODER 0 #define CONFIG_PCM_F16LE_DECODER 0 #define CONFIG_PCM_F24LE_DECODER 0 #define CONFIG_PCM_F32BE_DECODER 0 -#define CONFIG_PCM_F32LE_DECODER 0 +#define CONFIG_PCM_F32LE_DECODER 1 #define CONFIG_PCM_F64BE_DECODER 0 #define CONFIG_PCM_F64LE_DECODER 0 #define CONFIG_PCM_LXF_DECODER 0 -#define CONFIG_PCM_MULAW_DECODER 0 +#define CONFIG_PCM_MULAW_DECODER 1 #define CONFIG_PCM_S8_DECODER 0 #define CONFIG_PCM_S8_PLANAR_DECODER 0 #define CONFIG_PCM_S16BE_DECODER 0 #define CONFIG_PCM_S16BE_PLANAR_DECODER 0 -#define CONFIG_PCM_S16LE_DECODER 0 +#define CONFIG_PCM_S16LE_DECODER 1 #define CONFIG_PCM_S16LE_PLANAR_DECODER 0 #define CONFIG_PCM_S24BE_DECODER 0 #define CONFIG_PCM_S24DAUD_DECODER 0 -#define CONFIG_PCM_S24LE_DECODER 0 +#define CONFIG_PCM_S24LE_DECODER 1 #define CONFIG_PCM_S24LE_PLANAR_DECODER 0 #define CONFIG_PCM_S32BE_DECODER 0 -#define CONFIG_PCM_S32LE_DECODER 0 +#define CONFIG_PCM_S32LE_DECODER 1 #define CONFIG_PCM_S32LE_PLANAR_DECODER 0 #define CONFIG_PCM_S64BE_DECODER 0 #define CONFIG_PCM_S64LE_DECODER 0 #define CONFIG_PCM_SGA_DECODER 0 -#define CONFIG_PCM_U8_DECODER 0 +#define CONFIG_PCM_U8_DECODER 1 #define CONFIG_PCM_U16BE_DECODER 0 #define CONFIG_PCM_U16LE_DECODER 0 #define CONFIG_PCM_U24BE_DECODER 0 diff --git a/media/ffvpx/libavcodec/codec_list.c b/media/ffvpx/libavcodec/codec_list.c index bcdad501975ca..1e8bd2a6d27e3 100644 --- a/media/ffvpx/libavcodec/codec_list.c +++ b/media/ffvpx/libavcodec/codec_list.c @@ -19,5 +19,26 @@ static const FFCodec * const codec_list[] = { #endif #if CONFIG_LIBVORBIS_DECODER &ff_libvorbis_decoder, +#endif +#if CONFIG_PCM_ALAW_DECODER + &ff_pcm_alaw_decoder, +#endif +#if CONFIG_PCM_F32LE_DECODER + &ff_pcm_f32le_decoder, +#endif +#if CONFIG_PCM_MULAW_DECODER + &ff_pcm_mulaw_decoder, +#endif +#if CONFIG_PCM_S16LE_DECODER + &ff_pcm_s16le_decoder, +#endif +#if CONFIG_PCM_S24LE_DECODER + &ff_pcm_s24le_decoder, +#endif +#if CONFIG_PCM_S32LE_DECODER + &ff_pcm_s32le_decoder, +#endif +#if CONFIG_PCM_U8_DECODER + &ff_pcm_u8_decoder, #endif NULL }; diff --git a/media/ffvpx/libavcodec/moz.build b/media/ffvpx/libavcodec/moz.build index 6c3ae325b299d..9b48d3fee041b 100644 --- a/media/ffvpx/libavcodec/moz.build +++ b/media/ffvpx/libavcodec/moz.build @@ -62,6 +62,7 @@ SOURCES += [ 'options.c', 'parser.c', 'parsers.c', + 'pcm.c', 'profiles.c', 'pthread.c', 'pthread_frame.c', diff --git a/media/ffvpx/libavcodec/pcm.c b/media/ffvpx/libavcodec/pcm.c new file mode 100644 index 0000000000000..23955ba2ddfd6 --- /dev/null +++ b/media/ffvpx/libavcodec/pcm.c @@ -0,0 +1,630 @@ +/* + * PCM codecs + * Copyright (c) 2001 Fabrice Bellard + * + * 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 + * PCM codecs + */ + +#include "config.h" +#include "config_components.h" +#include "libavutil/attributes.h" +#include "libavutil/float_dsp.h" +#include "libavutil/reverse.h" +#include "libavutil/thread.h" +#include "avcodec.h" +#include "bytestream.h" +#include "codec_internal.h" +#include "decode.h" +#include "encode.h" +#include "pcm_tablegen.h" + +static av_cold int pcm_encode_init(AVCodecContext *avctx) +{ + avctx->frame_size = 0; +#if !CONFIG_HARDCODED_TABLES + switch (avctx->codec->id) { +#define INIT_ONCE(id, name) \ + case AV_CODEC_ID_PCM_ ## id: \ + if (CONFIG_PCM_ ## id ## _ENCODER) { \ + static AVOnce init_static_once = AV_ONCE_INIT; \ + ff_thread_once(&init_static_once, pcm_ ## name ## _tableinit); \ + } \ + break + INIT_ONCE(ALAW, alaw); + INIT_ONCE(MULAW, ulaw); + INIT_ONCE(VIDC, vidc); + default: + break; + } +#endif + + avctx->bits_per_coded_sample = av_get_bits_per_sample(avctx->codec->id); + avctx->block_align = avctx->ch_layout.nb_channels * avctx->bits_per_coded_sample / 8; + avctx->bit_rate = avctx->block_align * 8LL * avctx->sample_rate; + + return 0; +} + +/** + * Write PCM samples macro + * @param type Datatype of native machine format + * @param endian bytestream_put_xxx() suffix + * @param src Source pointer (variable name) + * @param dst Destination pointer (variable name) + * @param n Total number of samples (variable name) + * @param shift Bitshift (bits) + * @param offset Sample value offset + */ +#define ENCODE(type, endian, src, dst, n, shift, offset) \ + samples_ ## type = (const type *) src; \ + for (; n > 0; n--) { \ + register type v = (*samples_ ## type++ >> shift) + offset; \ + bytestream_put_ ## endian(&dst, v); \ + } + +#define ENCODE_PLANAR(type, endian, dst, n, shift, offset) \ + n /= avctx->ch_layout.nb_channels; \ + for (c = 0; c < avctx->ch_layout.nb_channels; c++) { \ + int i; \ + samples_ ## type = (const type *) frame->extended_data[c]; \ + for (i = n; i > 0; i--) { \ + register type v = (*samples_ ## type++ >> shift) + offset; \ + bytestream_put_ ## endian(&dst, v); \ + } \ + } + +static int pcm_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, + const AVFrame *frame, int *got_packet_ptr) +{ + int n, c, sample_size, v, ret; + const short *samples; + unsigned char *dst; + const uint8_t *samples_uint8_t; + const int16_t *samples_int16_t; + const int32_t *samples_int32_t; + const int64_t *samples_int64_t; + const uint16_t *samples_uint16_t; + const uint32_t *samples_uint32_t; + + sample_size = av_get_bits_per_sample(avctx->codec->id) / 8; + n = frame->nb_samples * avctx->ch_layout.nb_channels; + samples = (const short *)frame->data[0]; + + if ((ret = ff_get_encode_buffer(avctx, avpkt, n * sample_size, 0)) < 0) + return ret; + dst = avpkt->data; + + switch (avctx->codec->id) { + case AV_CODEC_ID_PCM_U32LE: + ENCODE(uint32_t, le32, samples, dst, n, 0, 0x80000000) + break; + case AV_CODEC_ID_PCM_U32BE: + ENCODE(uint32_t, be32, samples, dst, n, 0, 0x80000000) + break; + case AV_CODEC_ID_PCM_S24LE: + ENCODE(int32_t, le24, samples, dst, n, 8, 0) + break; + case AV_CODEC_ID_PCM_S24LE_PLANAR: + ENCODE_PLANAR(int32_t, le24, dst, n, 8, 0) + break; + case AV_CODEC_ID_PCM_S24BE: + ENCODE(int32_t, be24, samples, dst, n, 8, 0) + break; + case AV_CODEC_ID_PCM_U24LE: + ENCODE(uint32_t, le24, samples, dst, n, 8, 0x800000) + break; + case AV_CODEC_ID_PCM_U24BE: + ENCODE(uint32_t, be24, samples, dst, n, 8, 0x800000) + break; + case AV_CODEC_ID_PCM_S24DAUD: + for (; n > 0; n--) { + uint32_t tmp = ff_reverse[(*samples >> 8) & 0xff] + + (ff_reverse[*samples & 0xff] << 8); + tmp <<= 4; // sync flags would go here + bytestream_put_be24(&dst, tmp); + samples++; + } + break; + case AV_CODEC_ID_PCM_U16LE: + ENCODE(uint16_t, le16, samples, dst, n, 0, 0x8000) + break; + case AV_CODEC_ID_PCM_U16BE: + ENCODE(uint16_t, be16, samples, dst, n, 0, 0x8000) + break; + case AV_CODEC_ID_PCM_S8: + ENCODE(uint8_t, byte, samples, dst, n, 0, -128) + break; + case AV_CODEC_ID_PCM_S8_PLANAR: + ENCODE_PLANAR(uint8_t, byte, dst, n, 0, -128) + break; +#if HAVE_BIGENDIAN + case AV_CODEC_ID_PCM_S64LE: + case AV_CODEC_ID_PCM_F64LE: + ENCODE(int64_t, le64, samples, dst, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S32LE: + case AV_CODEC_ID_PCM_F32LE: + ENCODE(int32_t, le32, samples, dst, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S32LE_PLANAR: + ENCODE_PLANAR(int32_t, le32, dst, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S16LE: + ENCODE(int16_t, le16, samples, dst, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S16LE_PLANAR: + ENCODE_PLANAR(int16_t, le16, dst, n, 0, 0) + break; + case AV_CODEC_ID_PCM_F64BE: + case AV_CODEC_ID_PCM_F32BE: + case AV_CODEC_ID_PCM_S64BE: + case AV_CODEC_ID_PCM_S32BE: + case AV_CODEC_ID_PCM_S16BE: +#else + case AV_CODEC_ID_PCM_S64BE: + case AV_CODEC_ID_PCM_F64BE: + ENCODE(int64_t, be64, samples, dst, n, 0, 0) + break; + case AV_CODEC_ID_PCM_F32BE: + case AV_CODEC_ID_PCM_S32BE: + ENCODE(int32_t, be32, samples, dst, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S16BE: + ENCODE(int16_t, be16, samples, dst, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S16BE_PLANAR: + ENCODE_PLANAR(int16_t, be16, dst, n, 0, 0) + break; + case AV_CODEC_ID_PCM_F64LE: + case AV_CODEC_ID_PCM_F32LE: + case AV_CODEC_ID_PCM_S64LE: + case AV_CODEC_ID_PCM_S32LE: + case AV_CODEC_ID_PCM_S16LE: +#endif /* HAVE_BIGENDIAN */ + case AV_CODEC_ID_PCM_U8: + memcpy(dst, samples, n * sample_size); + break; +#if HAVE_BIGENDIAN + case AV_CODEC_ID_PCM_S16BE_PLANAR: +#else + case AV_CODEC_ID_PCM_S16LE_PLANAR: + case AV_CODEC_ID_PCM_S32LE_PLANAR: +#endif /* HAVE_BIGENDIAN */ + n /= avctx->ch_layout.nb_channels; + for (c = 0; c < avctx->ch_layout.nb_channels; c++) { + const uint8_t *src = frame->extended_data[c]; + bytestream_put_buffer(&dst, src, n * sample_size); + } + break; + case AV_CODEC_ID_PCM_ALAW: + for (; n > 0; n--) { + v = *samples++; + *dst++ = linear_to_alaw[(v + 32768) >> 2]; + } + break; + case AV_CODEC_ID_PCM_MULAW: + for (; n > 0; n--) { + v = *samples++; + *dst++ = linear_to_ulaw[(v + 32768) >> 2]; + } + break; + case AV_CODEC_ID_PCM_VIDC: + for (; n > 0; n--) { + v = *samples++; + *dst++ = linear_to_vidc[(v + 32768) >> 2]; + } + break; + default: + return -1; + } + + *got_packet_ptr = 1; + return 0; +} + +typedef struct PCMDecode { + short table[256]; + void (*vector_fmul_scalar)(float *dst, const float *src, float mul, + int len); + float scale; +} PCMDecode; + +static av_cold int pcm_decode_init(AVCodecContext *avctx) +{ + PCMDecode *s = avctx->priv_data; + AVFloatDSPContext *fdsp; + int i; + + switch (avctx->codec_id) { + case AV_CODEC_ID_PCM_ALAW: + for (i = 0; i < 256; i++) + s->table[i] = alaw2linear(i); + break; + case AV_CODEC_ID_PCM_MULAW: + for (i = 0; i < 256; i++) + s->table[i] = ulaw2linear(i); + break; + case AV_CODEC_ID_PCM_VIDC: + for (i = 0; i < 256; i++) + s->table[i] = vidc2linear(i); + break; + case AV_CODEC_ID_PCM_F16LE: + case AV_CODEC_ID_PCM_F24LE: + if (avctx->bits_per_coded_sample < 1 || avctx->bits_per_coded_sample > 24) + return AVERROR_INVALIDDATA; + + s->scale = 1. / (1 << (avctx->bits_per_coded_sample - 1)); + fdsp = avpriv_float_dsp_alloc(0); + if (!fdsp) + return AVERROR(ENOMEM); + s->vector_fmul_scalar = fdsp->vector_fmul_scalar; + av_free(fdsp); + break; + default: + break; + } + + avctx->sample_fmt = avctx->codec->sample_fmts[0]; + + if (avctx->sample_fmt == AV_SAMPLE_FMT_S32) + avctx->bits_per_raw_sample = av_get_bits_per_sample(avctx->codec_id); + + return 0; +} + +/** + * Read PCM samples macro + * @param size Data size of native machine format + * @param endian bytestream_get_xxx() endian suffix + * @param src Source pointer (variable name) + * @param dst Destination pointer (variable name) + * @param n Total number of samples (variable name) + * @param shift Bitshift (bits) + * @param offset Sample value offset + */ +#define DECODE(size, endian, src, dst, n, shift, offset) \ + for (; n > 0; n--) { \ + uint ## size ## _t v = bytestream_get_ ## endian(&src); \ + AV_WN ## size ## A(dst, (uint ## size ## _t)(v - offset) << shift); \ + dst += size / 8; \ + } + +#define DECODE_PLANAR(size, endian, src, dst, n, shift, offset) \ + n /= channels; \ + for (c = 0; c < avctx->ch_layout.nb_channels; c++) { \ + int i; \ + dst = frame->extended_data[c]; \ + for (i = n; i > 0; i--) { \ + uint ## size ## _t v = bytestream_get_ ## endian(&src); \ + AV_WN ## size ## A(dst, (uint ## size ##_t)(v - offset) << shift); \ + dst += size / 8; \ + } \ + } + +static int pcm_decode_frame(AVCodecContext *avctx, AVFrame *frame, + int *got_frame_ptr, AVPacket *avpkt) +{ + const uint8_t *src = avpkt->data; + int buf_size = avpkt->size; + PCMDecode *s = avctx->priv_data; + int channels = avctx->ch_layout.nb_channels; + int sample_size, c, n, ret, samples_per_block; + uint8_t *samples; + int32_t *dst_int32_t; + + sample_size = av_get_bits_per_sample(avctx->codec_id) / 8; + + /* av_get_bits_per_sample returns 0 for AV_CODEC_ID_PCM_DVD */ + samples_per_block = 1; + if (avctx->codec_id == AV_CODEC_ID_PCM_LXF) { + /* we process 40-bit blocks per channel for LXF */ + samples_per_block = 2; + sample_size = 5; + } + + if (sample_size == 0) { + av_log(avctx, AV_LOG_ERROR, "Invalid sample_size\n"); + return AVERROR(EINVAL); + } + + if (channels == 0) { + av_log(avctx, AV_LOG_ERROR, "Invalid number of channels\n"); + return AVERROR(EINVAL); + } + + if (avctx->codec_id != avctx->codec->id) { + av_log(avctx, AV_LOG_ERROR, "codec ids mismatch\n"); + return AVERROR(EINVAL); + } + + n = channels * sample_size; + + if (n && buf_size % n) { + if (buf_size < n) { + av_log(avctx, AV_LOG_ERROR, + "Invalid PCM packet, data has size %d but at least a size of %d was expected\n", + buf_size, n); + return AVERROR_INVALIDDATA; + } else + buf_size -= buf_size % n; + } + + n = buf_size / sample_size; + + /* get output buffer */ + frame->nb_samples = n * samples_per_block / channels; + if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) + return ret; + samples = frame->data[0]; + + switch (avctx->codec_id) { + case AV_CODEC_ID_PCM_U32LE: + DECODE(32, le32, src, samples, n, 0, 0x80000000) + break; + case AV_CODEC_ID_PCM_U32BE: + DECODE(32, be32, src, samples, n, 0, 0x80000000) + break; + case AV_CODEC_ID_PCM_S24LE: + DECODE(32, le24, src, samples, n, 8, 0) + break; + case AV_CODEC_ID_PCM_S24LE_PLANAR: + DECODE_PLANAR(32, le24, src, samples, n, 8, 0); + break; + case AV_CODEC_ID_PCM_S24BE: + DECODE(32, be24, src, samples, n, 8, 0) + break; + case AV_CODEC_ID_PCM_U24LE: + DECODE(32, le24, src, samples, n, 8, 0x800000) + break; + case AV_CODEC_ID_PCM_U24BE: + DECODE(32, be24, src, samples, n, 8, 0x800000) + break; + case AV_CODEC_ID_PCM_S24DAUD: + for (; n > 0; n--) { + uint32_t v = bytestream_get_be24(&src); + v >>= 4; // sync flags are here + AV_WN16A(samples, ff_reverse[(v >> 8) & 0xff] + + (ff_reverse[v & 0xff] << 8)); + samples += 2; + } + break; + case AV_CODEC_ID_PCM_U16LE: + DECODE(16, le16, src, samples, n, 0, 0x8000) + break; + case AV_CODEC_ID_PCM_U16BE: + DECODE(16, be16, src, samples, n, 0, 0x8000) + break; + case AV_CODEC_ID_PCM_S8: + for (; n > 0; n--) + *samples++ = *src++ + 128; + break; + case AV_CODEC_ID_PCM_SGA: + for (; n > 0; n--) { + int sign = *src >> 7; + int magn = *src & 0x7f; + *samples++ = sign ? 128 - magn : 128 + magn; + src++; + } + break; + case AV_CODEC_ID_PCM_S8_PLANAR: + n /= avctx->ch_layout.nb_channels; + for (c = 0; c < avctx->ch_layout.nb_channels; c++) { + int i; + samples = frame->extended_data[c]; + for (i = n; i > 0; i--) + *samples++ = *src++ + 128; + } + break; +#if HAVE_BIGENDIAN + case AV_CODEC_ID_PCM_S64LE: + case AV_CODEC_ID_PCM_F64LE: + DECODE(64, le64, src, samples, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S32LE: + case AV_CODEC_ID_PCM_F32LE: + case AV_CODEC_ID_PCM_F24LE: + case AV_CODEC_ID_PCM_F16LE: + DECODE(32, le32, src, samples, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S32LE_PLANAR: + DECODE_PLANAR(32, le32, src, samples, n, 0, 0); + break; + case AV_CODEC_ID_PCM_S16LE: + DECODE(16, le16, src, samples, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S16LE_PLANAR: + DECODE_PLANAR(16, le16, src, samples, n, 0, 0); + break; + case AV_CODEC_ID_PCM_F64BE: + case AV_CODEC_ID_PCM_F32BE: + case AV_CODEC_ID_PCM_S64BE: + case AV_CODEC_ID_PCM_S32BE: + case AV_CODEC_ID_PCM_S16BE: +#else + case AV_CODEC_ID_PCM_S64BE: + case AV_CODEC_ID_PCM_F64BE: + DECODE(64, be64, src, samples, n, 0, 0) + break; + case AV_CODEC_ID_PCM_F32BE: + case AV_CODEC_ID_PCM_S32BE: + DECODE(32, be32, src, samples, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S16BE: + DECODE(16, be16, src, samples, n, 0, 0) + break; + case AV_CODEC_ID_PCM_S16BE_PLANAR: + DECODE_PLANAR(16, be16, src, samples, n, 0, 0); + break; + case AV_CODEC_ID_PCM_F64LE: + case AV_CODEC_ID_PCM_F32LE: + case AV_CODEC_ID_PCM_F24LE: + case AV_CODEC_ID_PCM_F16LE: + case AV_CODEC_ID_PCM_S64LE: + case AV_CODEC_ID_PCM_S32LE: + case AV_CODEC_ID_PCM_S16LE: +#endif /* HAVE_BIGENDIAN */ + case AV_CODEC_ID_PCM_U8: + memcpy(samples, src, n * sample_size); + break; +#if HAVE_BIGENDIAN + case AV_CODEC_ID_PCM_S16BE_PLANAR: +#else + case AV_CODEC_ID_PCM_S16LE_PLANAR: + case AV_CODEC_ID_PCM_S32LE_PLANAR: +#endif /* HAVE_BIGENDIAN */ + n /= avctx->ch_layout.nb_channels; + for (c = 0; c < avctx->ch_layout.nb_channels; c++) { + samples = frame->extended_data[c]; + bytestream_get_buffer(&src, samples, n * sample_size); + } + break; + case AV_CODEC_ID_PCM_ALAW: + case AV_CODEC_ID_PCM_MULAW: + case AV_CODEC_ID_PCM_VIDC: + for (; n > 0; n--) { + AV_WN16A(samples, s->table[*src++]); + samples += 2; + } + break; + case AV_CODEC_ID_PCM_LXF: + { + int i; + n /= channels; + for (c = 0; c < channels; c++) { + dst_int32_t = (int32_t *)frame->extended_data[c]; + for (i = 0; i < n; i++) { + // extract low 20 bits and expand to 32 bits + *dst_int32_t++ = ((uint32_t)src[2]<<28) | + (src[1] << 20) | + (src[0] << 12) | + ((src[2] & 0x0F) << 8) | + src[1]; + // extract high 20 bits and expand to 32 bits + *dst_int32_t++ = ((uint32_t)src[4]<<24) | + (src[3] << 16) | + ((src[2] & 0xF0) << 8) | + (src[4] << 4) | + (src[3] >> 4); + src += 5; + } + } + break; + } + default: + return -1; + } + + if (avctx->codec_id == AV_CODEC_ID_PCM_F16LE || + avctx->codec_id == AV_CODEC_ID_PCM_F24LE) { + s->vector_fmul_scalar((float *)frame->extended_data[0], + (const float *)frame->extended_data[0], + s->scale, FFALIGN(frame->nb_samples * avctx->ch_layout.nb_channels, 4)); + emms_c(); + } + + *got_frame_ptr = 1; + + return buf_size; +} + +#define PCM_ENCODER_0(id_, sample_fmt_, name_, long_name_) +#define PCM_ENCODER_1(id_, sample_fmt_, name_, long_name_) \ +const FFCodec ff_ ## name_ ## _encoder = { \ + .p.name = #name_, \ + CODEC_LONG_NAME(long_name_), \ + .p.type = AVMEDIA_TYPE_AUDIO, \ + .p.id = AV_CODEC_ID_ ## id_, \ + .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_VARIABLE_FRAME_SIZE | \ + AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE, \ + .init = pcm_encode_init, \ + FF_CODEC_ENCODE_CB(pcm_encode_frame), \ + .p.sample_fmts = (const enum AVSampleFormat[]){ sample_fmt_, \ + AV_SAMPLE_FMT_NONE }, \ +} + +#define PCM_ENCODER_2(cf, id, sample_fmt, name, long_name) \ + PCM_ENCODER_ ## cf(id, sample_fmt, name, long_name) +#define PCM_ENCODER_3(cf, id, sample_fmt, name, long_name) \ + PCM_ENCODER_2(cf, id, sample_fmt, name, long_name) +#define PCM_ENCODER(id, sample_fmt, name, long_name) \ + PCM_ENCODER_3(CONFIG_ ## id ## _ENCODER, id, sample_fmt, name, long_name) + +#define PCM_DECODER_0(id, sample_fmt, name, long_name) +#define PCM_DECODER_1(id_, sample_fmt_, name_, long_name_) \ +const FFCodec ff_ ## name_ ## _decoder = { \ + .p.name = #name_, \ + CODEC_LONG_NAME(long_name_), \ + .p.type = AVMEDIA_TYPE_AUDIO, \ + .p.id = AV_CODEC_ID_ ## id_, \ + .priv_data_size = sizeof(PCMDecode), \ + .init = pcm_decode_init, \ + FF_CODEC_DECODE_CB(pcm_decode_frame), \ + .p.capabilities = AV_CODEC_CAP_DR1, \ + .p.sample_fmts = (const enum AVSampleFormat[]){ sample_fmt_, \ + AV_SAMPLE_FMT_NONE }, \ +} + +#define PCM_DECODER_2(cf, id, sample_fmt, name, long_name) \ + PCM_DECODER_ ## cf(id, sample_fmt, name, long_name) +#define PCM_DECODER_3(cf, id, sample_fmt, name, long_name) \ + PCM_DECODER_2(cf, id, sample_fmt, name, long_name) +#define PCM_DECODER(id, sample_fmt, name, long_name) \ + PCM_DECODER_3(CONFIG_ ## id ## _DECODER, id, sample_fmt, name, long_name) + +#define PCM_CODEC(id, sample_fmt_, name, long_name_) \ + PCM_ENCODER(id, sample_fmt_, name, long_name_); \ + PCM_DECODER(id, sample_fmt_, name, long_name_) + +/* Note: Do not forget to add new entries to the Makefile as well. */ +PCM_CODEC (PCM_ALAW, AV_SAMPLE_FMT_S16, pcm_alaw, "PCM A-law / G.711 A-law"); +PCM_DECODER(PCM_F16LE, AV_SAMPLE_FMT_FLT, pcm_f16le, "PCM 16.8 floating point little-endian"); +PCM_DECODER(PCM_F24LE, AV_SAMPLE_FMT_FLT, pcm_f24le, "PCM 24.0 floating point little-endian"); +PCM_CODEC (PCM_F32BE, AV_SAMPLE_FMT_FLT, pcm_f32be, "PCM 32-bit floating point big-endian"); +PCM_CODEC (PCM_F32LE, AV_SAMPLE_FMT_FLT, pcm_f32le, "PCM 32-bit floating point little-endian"); +PCM_CODEC (PCM_F64BE, AV_SAMPLE_FMT_DBL, pcm_f64be, "PCM 64-bit floating point big-endian"); +PCM_CODEC (PCM_F64LE, AV_SAMPLE_FMT_DBL, pcm_f64le, "PCM 64-bit floating point little-endian"); +PCM_DECODER(PCM_LXF, AV_SAMPLE_FMT_S32P,pcm_lxf, "PCM signed 20-bit little-endian planar"); +PCM_CODEC (PCM_MULAW, AV_SAMPLE_FMT_S16, pcm_mulaw, "PCM mu-law / G.711 mu-law"); +PCM_CODEC (PCM_S8, AV_SAMPLE_FMT_U8, pcm_s8, "PCM signed 8-bit"); +PCM_CODEC (PCM_S8_PLANAR, AV_SAMPLE_FMT_U8P, pcm_s8_planar, "PCM signed 8-bit planar"); +PCM_CODEC (PCM_S16BE, AV_SAMPLE_FMT_S16, pcm_s16be, "PCM signed 16-bit big-endian"); +PCM_CODEC (PCM_S16BE_PLANAR, AV_SAMPLE_FMT_S16P,pcm_s16be_planar, "PCM signed 16-bit big-endian planar"); +PCM_CODEC (PCM_S16LE, AV_SAMPLE_FMT_S16, pcm_s16le, "PCM signed 16-bit little-endian"); +PCM_CODEC (PCM_S16LE_PLANAR, AV_SAMPLE_FMT_S16P,pcm_s16le_planar, "PCM signed 16-bit little-endian planar"); +PCM_CODEC (PCM_S24BE, AV_SAMPLE_FMT_S32, pcm_s24be, "PCM signed 24-bit big-endian"); +PCM_CODEC (PCM_S24DAUD, AV_SAMPLE_FMT_S16, pcm_s24daud, "PCM D-Cinema audio signed 24-bit"); +PCM_CODEC (PCM_S24LE, AV_SAMPLE_FMT_S32, pcm_s24le, "PCM signed 24-bit little-endian"); +PCM_CODEC (PCM_S24LE_PLANAR, AV_SAMPLE_FMT_S32P,pcm_s24le_planar, "PCM signed 24-bit little-endian planar"); +PCM_CODEC (PCM_S32BE, AV_SAMPLE_FMT_S32, pcm_s32be, "PCM signed 32-bit big-endian"); +PCM_CODEC (PCM_S32LE, AV_SAMPLE_FMT_S32, pcm_s32le, "PCM signed 32-bit little-endian"); +PCM_CODEC (PCM_S32LE_PLANAR, AV_SAMPLE_FMT_S32P,pcm_s32le_planar, "PCM signed 32-bit little-endian planar"); +PCM_CODEC (PCM_U8, AV_SAMPLE_FMT_U8, pcm_u8, "PCM unsigned 8-bit"); +PCM_CODEC (PCM_U16BE, AV_SAMPLE_FMT_S16, pcm_u16be, "PCM unsigned 16-bit big-endian"); +PCM_CODEC (PCM_U16LE, AV_SAMPLE_FMT_S16, pcm_u16le, "PCM unsigned 16-bit little-endian"); +PCM_CODEC (PCM_U24BE, AV_SAMPLE_FMT_S32, pcm_u24be, "PCM unsigned 24-bit big-endian"); +PCM_CODEC (PCM_U24LE, AV_SAMPLE_FMT_S32, pcm_u24le, "PCM unsigned 24-bit little-endian"); +PCM_CODEC (PCM_U32BE, AV_SAMPLE_FMT_S32, pcm_u32be, "PCM unsigned 32-bit big-endian"); +PCM_CODEC (PCM_U32LE, AV_SAMPLE_FMT_S32, pcm_u32le, "PCM unsigned 32-bit little-endian"); +PCM_CODEC (PCM_S64BE, AV_SAMPLE_FMT_S64, pcm_s64be, "PCM signed 64-bit big-endian"); +PCM_CODEC (PCM_S64LE, AV_SAMPLE_FMT_S64, pcm_s64le, "PCM signed 64-bit little-endian"); +PCM_CODEC (PCM_VIDC, AV_SAMPLE_FMT_S16, pcm_vidc, "PCM Archimedes VIDC"); +PCM_DECODER(PCM_SGA, AV_SAMPLE_FMT_U8, pcm_sga, "PCM SGA"); diff --git a/media/ffvpx/libavcodec/pcm_tablegen.h b/media/ffvpx/libavcodec/pcm_tablegen.h new file mode 100644 index 0000000000000..7274c3cd1722e --- /dev/null +++ b/media/ffvpx/libavcodec/pcm_tablegen.h @@ -0,0 +1,143 @@ +/* + * Header file for hardcoded PCM tables + * + * Copyright (c) 2010 Reimar Döffinger + * + * 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 + */ + +#ifndef AVCODEC_PCM_TABLEGEN_H +#define AVCODEC_PCM_TABLEGEN_H + +#include +#include "libavutil/attributes.h" + +/* from g711.c by SUN microsystems (unrestricted use) */ + +#define SIGN_BIT (0x80) /* Sign bit for a A-law byte. */ +#define QUANT_MASK (0xf) /* Quantization field mask. */ +#define NSEGS (8) /* Number of A-law segments. */ +#define SEG_SHIFT (4) /* Left shift for segment number. */ +#define SEG_MASK (0x70) /* Segment field mask. */ + +#define BIAS (0x84) /* Bias for linear code. */ + +#define VIDC_SIGN_BIT (1) +#define VIDC_QUANT_MASK (0x1E) +#define VIDC_QUANT_SHIFT (1) +#define VIDC_SEG_SHIFT (5) +#define VIDC_SEG_MASK (0xE0) + +/* alaw2linear() - Convert an A-law value to 16-bit linear PCM */ +static av_cold int alaw2linear(unsigned char a_val) +{ + int t; + int seg; + + a_val ^= 0x55; + + t = a_val & QUANT_MASK; + seg = ((unsigned)a_val & SEG_MASK) >> SEG_SHIFT; + if(seg) t= (t + t + 1 + 32) << (seg + 2); + else t= (t + t + 1 ) << 3; + + return (a_val & SIGN_BIT) ? t : -t; +} + +static av_cold int ulaw2linear(unsigned char u_val) +{ + int t; + + /* Complement to obtain normal u-law value. */ + u_val = ~u_val; + + /* + * Extract and bias the quantization bits. Then + * shift up by the segment number and subtract out the bias. + */ + t = ((u_val & QUANT_MASK) << 3) + BIAS; + t <<= ((unsigned)u_val & SEG_MASK) >> SEG_SHIFT; + + return (u_val & SIGN_BIT) ? (BIAS - t) : (t - BIAS); +} + +static av_cold int vidc2linear(unsigned char u_val) +{ + int t; + + /* + * Extract and bias the quantization bits. Then + * shift up by the segment number and subtract out the bias. + */ + t = (((u_val & VIDC_QUANT_MASK) >> VIDC_QUANT_SHIFT) << 3) + BIAS; + t <<= ((unsigned)u_val & VIDC_SEG_MASK) >> VIDC_SEG_SHIFT; + + return (u_val & VIDC_SIGN_BIT) ? (BIAS - t) : (t - BIAS); +} + +#if CONFIG_HARDCODED_TABLES +#define pcm_alaw_tableinit() +#define pcm_ulaw_tableinit() +#define pcm_vidc_tableinit() +#include "libavcodec/pcm_tables.h" +#else +/* 16384 entries per table */ +static uint8_t linear_to_alaw[16384]; +static uint8_t linear_to_ulaw[16384]; +static uint8_t linear_to_vidc[16384]; + +static av_cold void build_xlaw_table(uint8_t *linear_to_xlaw, + int (*xlaw2linear)(unsigned char), + int mask) +{ + int i, j, v, v1, v2; + + j = 1; + linear_to_xlaw[8192] = mask; + for(i=0;i<127;i++) { + v1 = xlaw2linear(i ^ mask); + v2 = xlaw2linear((i + 1) ^ mask); + v = (v1 + v2 + 4) >> 3; + for(;j