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TAK demuxer, decoder and parser

Signed-off-by: Paul B Mahol <onemda@gmail.com>
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1 parent 208a5d1 commit d7a473926504e2acfa6ae3bead0938e1f4e03441 @richardpl committed Oct 2, 2012
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@@ -8,6 +8,7 @@ version next:
- Opus encoder using libopus
- ffprobe -select_streams option
- Pinnacle TARGA CineWave YUV16 decoder
+- TAK demuxer, decoder and parser
version 1.0:
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@@ -1824,6 +1824,7 @@ sap_muxer_select="rtp_muxer rtp_protocol"
sdp_demuxer_select="rtpdec"
smoothstreaming_muxer_select="ismv_muxer"
spdif_muxer_select="aac_parser"
+tak_demuxer_select="tak_parser"
tg2_muxer_select="mov_muxer"
tgp_muxer_select="mov_muxer"
w64_demuxer_deps="wav_demuxer"
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@@ -304,6 +304,7 @@ library:
@item raw video @tab X @tab X
@item raw id RoQ @tab X @tab
@item raw Shorten @tab @tab X
+@item raw TAK @tab @tab X
@item raw TrueHD @tab X @tab X
@item raw VC-1 @tab @tab X
@item raw PCM A-law @tab X @tab X
@@ -863,6 +864,7 @@ following image formats are supported:
@tab experimental codec
@item Speex @tab E @tab E
@tab supported through external library libspeex
+@item TAK (Tom's lossless Audio Kompressor) @tab @tab X
@item True Audio (TTA) @tab @tab X
@item TrueHD @tab @tab X
@tab Used in HD-DVD and Blu-Ray discs.
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@@ -400,6 +400,7 @@ OBJS-$(CONFIG_SVQ3_DECODER) += svq3.o svq13.o h263.o h264.o \
h264_loopfilter.o h264_direct.o \
h264_sei.o h264_ps.o h264_refs.o \
h264_cavlc.o h264_cabac.o cabac.o
+OBJS-$(CONFIG_TAK_DECODER) += takdec.o tak.o
OBJS-$(CONFIG_TARGA_DECODER) += targa.o
OBJS-$(CONFIG_TARGA_ENCODER) += targaenc.o rle.o
OBJS-$(CONFIG_TARGA_Y216_DECODER) += targa_y216dec.o
@@ -713,6 +714,7 @@ OBJS-$(CONFIG_MPEGVIDEO_PARSER) += mpegvideo_parser.o \
OBJS-$(CONFIG_PNM_PARSER) += pnm_parser.o pnm.o
OBJS-$(CONFIG_RV30_PARSER) += rv34_parser.o
OBJS-$(CONFIG_RV40_PARSER) += rv34_parser.o
+OBJS-$(CONFIG_TAK_PARSER) += tak_parser.o tak.o
OBJS-$(CONFIG_VC1_PARSER) += vc1_parser.o vc1.o vc1data.o \
msmpeg4.o msmpeg4data.o mpeg4video.o \
h263.o
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@@ -328,6 +328,7 @@ void avcodec_register_all(void)
REGISTER_DECODER (SMACKAUD, smackaud);
REGISTER_ENCDEC (SONIC, sonic);
REGISTER_ENCODER (SONIC_LS, sonic_ls);
+ REGISTER_DECODER (TAK, tak);
REGISTER_DECODER (TRUEHD, truehd);
REGISTER_DECODER (TRUESPEECH, truespeech);
REGISTER_DECODER (TTA, tta);
@@ -486,6 +487,7 @@ void avcodec_register_all(void)
REGISTER_PARSER (PNM, pnm);
REGISTER_PARSER (RV30, rv30);
REGISTER_PARSER (RV40, rv40);
+ REGISTER_PARSER (TAK, tak);
REGISTER_PARSER (VC1, vc1);
REGISTER_PARSER (VORBIS, vorbis);
REGISTER_PARSER (VP3, vp3);
View
@@ -431,6 +431,7 @@ enum AVCodecID {
AV_CODEC_ID_SONIC_LS = MKBETAG('S','O','N','L'),
AV_CODEC_ID_PAF_AUDIO = MKBETAG('P','A','F','A'),
AV_CODEC_ID_OPUS = MKBETAG('O','P','U','S'),
+ AV_CODEC_ID_TAK = MKBETAG('t','B','a','K'),
/* subtitle codecs */
AV_CODEC_ID_FIRST_SUBTITLE = 0x17000, ///< A dummy ID pointing at the start of subtitle codecs.
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@@ -2252,6 +2252,13 @@ static const AVCodecDescriptor codec_descriptors[] = {
.long_name = NULL_IF_CONFIG_SMALL("Opus (Opus Interactive Audio Codec)"),
.props = AV_CODEC_PROP_LOSSY,
},
+ {
+ .id = AV_CODEC_ID_TAK,
+ .type = AVMEDIA_TYPE_AUDIO,
+ .name = "tak",
+ .long_name = NULL_IF_CONFIG_SMALL("TAK (Tom's lossless Audio Kompressor)"),
+ .props = AV_CODEC_PROP_LOSSLESS,
+ },
/* subtitle codecs */
{
View
@@ -0,0 +1,177 @@
+/*
+ * TAK common code
+ * Copyright (c) 2012 Paul B Mahol
+ *
+ * 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
+ */
+
+#include "tak.h"
+#include "libavutil/crc.h"
+#include "libavutil/intreadwrite.h"
+#include "libavutil/bswap.h"
+
+static const int64_t tak_channel_layouts[] = {
+ 0,
+ AV_CH_FRONT_LEFT,
+ AV_CH_FRONT_RIGHT,
+ AV_CH_FRONT_CENTER,
+ AV_CH_LOW_FREQUENCY,
+ AV_CH_BACK_LEFT,
+ AV_CH_BACK_RIGHT,
+ AV_CH_FRONT_LEFT_OF_CENTER,
+ AV_CH_FRONT_RIGHT_OF_CENTER,
+ AV_CH_BACK_CENTER,
+ AV_CH_SIDE_LEFT,
+ AV_CH_SIDE_RIGHT,
+ AV_CH_TOP_CENTER,
+ AV_CH_TOP_FRONT_LEFT,
+ AV_CH_TOP_FRONT_CENTER,
+ AV_CH_TOP_FRONT_RIGHT,
+ AV_CH_TOP_BACK_LEFT,
+ AV_CH_TOP_BACK_CENTER,
+ AV_CH_TOP_BACK_RIGHT,
+};
+
+static const uint16_t frame_duration_type_quants[] = {
+ 3, 4, 6, 8, 4096, 8192, 16384, 512, 1024, 2048,
+};
+
+static int tak_get_nb_samples(int sample_rate, enum TAKFrameSizeType type)
+{
+ int nb_samples, max_nb_samples;
+
+ if (type <= TAK_FST_250ms) {
+ nb_samples = sample_rate * frame_duration_type_quants[type] >>
+ TAK_FRAME_DURATION_QUANT_SHIFT;
+ max_nb_samples = 16384;
+ } else if (type < FF_ARRAY_ELEMS(frame_duration_type_quants)) {
+ nb_samples = frame_duration_type_quants[type];
+ max_nb_samples = sample_rate * frame_duration_type_quants[TAK_FST_250ms] >>
+ TAK_FRAME_DURATION_QUANT_SHIFT;
+ } else {
+ return AVERROR_INVALIDDATA;
+ }
+
+ if (nb_samples <= 0 || nb_samples > max_nb_samples)
+ return AVERROR_INVALIDDATA;
+
+ return nb_samples;
+}
+
+static int crc_init = 0;
+#if CONFIG_SMALL
+#define CRC_TABLE_SIZE 257
+#else
+#define CRC_TABLE_SIZE 1024
+#endif
+static AVCRC crc_24[CRC_TABLE_SIZE];
+
+av_cold void ff_tak_init_crc(void)
+{
+ if (!crc_init) {
+ av_crc_init(crc_24, 0, 24, 0x864CFBU, sizeof(crc_24));
+ crc_init = 1;
+ }
+}
+
+int ff_tak_check_crc(const uint8_t *buf, unsigned int buf_size)
+{
+ uint32_t crc, CRC;
+
+ if (buf_size < 4)
+ return AVERROR_INVALIDDATA;
+ buf_size -= 3;
+
+ CRC = av_bswap32(AV_RL24(buf + buf_size)) >> 8;
+ crc = av_crc(crc_24, 0xCE04B7U, buf, buf_size);
+ if (CRC != crc)
+ return AVERROR_INVALIDDATA;
+
+ return 0;
+}
+
+void avpriv_tak_parse_streaminfo(GetBitContext *gb, TAKStreamInfo *s)
+{
+ uint64_t channel_mask = 0;
+ int frame_type, i;
+
+ s->codec = get_bits(gb, TAK_ENCODER_CODEC_BITS);
+ skip_bits(gb, TAK_ENCODER_PROFILE_BITS);
+
+ frame_type = get_bits(gb, TAK_SIZE_FRAME_DURATION_BITS);
+ s->samples = get_bits_longlong(gb, TAK_SIZE_SAMPLES_NUM_BITS);
+
+ s->data_type = get_bits(gb, TAK_FORMAT_DATA_TYPE_BITS);
+ s->sample_rate = get_bits(gb, TAK_FORMAT_SAMPLE_RATE_BITS) + TAK_SAMPLE_RATE_MIN;
+ s->bps = get_bits(gb, TAK_FORMAT_BPS_BITS) + TAK_BPS_MIN;
+ s->channels = get_bits(gb, TAK_FORMAT_CHANNEL_BITS) + TAK_CHANNELS_MIN;
+
+ if (get_bits1(gb)) {
+ skip_bits(gb, TAK_FORMAT_VALID_BITS);
+ if (get_bits1(gb)) {
+ for (i = 0; i < s->channels; i++) {
+ int value = get_bits(gb, TAK_FORMAT_CH_LAYOUT_BITS);
+
+ if (value < FF_ARRAY_ELEMS(tak_channel_layouts))
+ channel_mask |= tak_channel_layouts[value];
+ }
+ }
+ }
+
+ s->ch_layout = channel_mask;
+ s->frame_samples = tak_get_nb_samples(s->sample_rate, frame_type);
+}
+
+#define FRAME_IS_LAST 1
+#define FRAME_HAVE_INFO 2
+#define FRAME_HAVE_METADATA 4
+
+int ff_tak_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb,
+ TAKStreamInfo *ti, int log_level_offset)
+{
+ int flags;
+
+ if (get_bits(gb, TAK_FRAME_HEADER_SYNC_ID_BITS) != TAK_FRAME_HEADER_SYNC_ID) {
+ av_log(avctx, AV_LOG_ERROR + log_level_offset, "missing sync id\n");
+ return AVERROR_INVALIDDATA;
+ }
+
+ flags = get_bits(gb, TAK_FRAME_HEADER_FLAGS_BITS);
+ ti->frame_num = get_bits(gb, TAK_FRAME_HEADER_NO_BITS);
+
+ if (flags & FRAME_IS_LAST) {
+ ti->last_frame_samples = get_bits(gb, TAK_FRAME_HEADER_SAMPLE_COUNT_BITS) + 1;
+ skip_bits(gb, 2);
+ } else {
+ ti->last_frame_samples = 0;
+ }
+
+ if (flags & FRAME_HAVE_INFO) {
+ avpriv_tak_parse_streaminfo(gb, ti);
+
+ if (get_bits(gb, 6))
+ skip_bits(gb, 25);
+ align_get_bits(gb);
+ }
+
+ if (flags & FRAME_HAVE_METADATA)
+ return AVERROR_INVALIDDATA;
+
+ skip_bits(gb, 24);
+
+ return 0;
+}
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