TAK demuxer, decoder and parser

Signed-off-by: Paul B Mahol <[email protected]>

Changelog

@@ -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:

configure

@@ -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"

doc/general.texi

@@ -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.

libavcodec/Makefile

@@ -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

libavcodec/allcodecs.c

@@ -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);

libavcodec/avcodec.h

@@ -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.

libavcodec/codec_desc.c

@@ -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 */
     {

libavcodec/tak.c

@@ -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;
+}