TAK demuxer, decoder and parser

Signed-off-by: Paul B Mahol <onemda@gmail.com>

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

+/*
+ * 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;
+}

libavcodec/tak.h

+/*
+ * TAK decoder/demuxer 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
+ */
+
+/**
+ * @file
+ * TAK (Tom's lossless Audio Kompressor) decoder/demuxer common functions
+ */
+
+#ifndef AVCODEC_TAK_H
+#define AVCODEC_TAK_H
+
+#define BITSTREAM_READER_LE
+#include "get_bits.h"
+#include "avcodec.h"
+
+#define TAK_FORMAT_DATA_TYPE_BITS    3
+#define TAK_FORMAT_SAMPLE_RATE_BITS  18
+#define TAK_FORMAT_BPS_BITS          5
+#define TAK_FORMAT_CHANNEL_BITS      4
+#define TAK_FORMAT_VALID_BITS        5
+#define TAK_FORMAT_CH_LAYOUT_BITS    6
+#define TAK_SIZE_FRAME_DURATION_BITS 4
+#define TAK_SIZE_SAMPLES_NUM_BITS    35
+#define TAK_LAST_FRAME_POS_BITS      40
+#define TAK_LAST_FRAME_SIZE_BITS     24
+#define TAK_ENCODER_CODEC_BITS       6
+#define TAK_ENCODER_PROFILE_BITS     4
+#define TAK_ENCODER_VERSION_BITS     24
+#define TAK_SAMPLE_RATE_MIN          6000
+#define TAK_CHANNELS_MIN             1
+#define TAK_BPS_MIN                  8
+#define TAK_FRAME_HEADER_FLAGS_BITS         3
+#define TAK_FRAME_HEADER_SYNC_ID            0xA0FF
+#define TAK_FRAME_HEADER_SYNC_ID_BITS       16
+#define TAK_FRAME_HEADER_SAMPLE_COUNT_BITS  14
+#define TAK_FRAME_HEADER_NO_BITS            21
+#define TAK_FRAME_DURATION_QUANT_SHIFT      5
+#define TAK_CRC24_BITS                      24
+
+#define TAK_MAX_CHANNELS                  ( 1 << TAK_FORMAT_CHANNEL_BITS )
+
+#define TAK_MIN_FRAME_HEADER_BITS         ( TAK_FRAME_HEADER_SYNC_ID_BITS + \
+                                            TAK_FRAME_HEADER_FLAGS_BITS   + \
+                                            TAK_FRAME_HEADER_NO_BITS      + \
+                                            TAK_CRC24_BITS )
+
+#define TAK_MIN_FRAME_HEADER_LAST_BITS    ( TAK_MIN_FRAME_HEADER_BITS + 2 + \
+                                            TAK_FRAME_HEADER_SAMPLE_COUNT_BITS )
+
+#define TAK_ENCODER_BITS         ( TAK_ENCODER_CODEC_BITS        + \
+                                   TAK_ENCODER_PROFILE_BITS )
+
+#define TAK_SIZE_BITS            ( TAK_SIZE_SAMPLES_NUM_BITS     + \
+                                   TAK_SIZE_FRAME_DURATION_BITS )
+
+#define TAK_FORMAT_BITS          ( TAK_FORMAT_DATA_TYPE_BITS     + \
+                                   TAK_FORMAT_SAMPLE_RATE_BITS   + \
+                                   TAK_FORMAT_BPS_BITS           + \
+                                   TAK_FORMAT_CHANNEL_BITS + 1   + \
+                                   TAK_FORMAT_VALID_BITS   + 1   + \
+                                   TAK_FORMAT_CH_LAYOUT_BITS     * \
+                                   TAK_MAX_CHANNELS )
+
+#define TAK_STREAMINFO_BITS      ( TAK_ENCODER_BITS              + \
+                                   TAK_SIZE_BITS                 + \
+                                   TAK_FORMAT_BITS )
+
+#define TAK_MAX_FRAME_HEADER_BITS  ( TAK_MIN_FRAME_HEADER_LAST_BITS + \
+                                     TAK_STREAMINFO_BITS + 31 )
+
+#define TAK_STREAMINFO_BYTES        (( TAK_STREAMINFO_BITS + 7 ) / 8)
+#define TAK_MAX_FRAME_HEADER_BYTES  (( TAK_MAX_FRAME_HEADER_BITS + 7 ) / 8)
+#define TAK_MIN_FRAME_HEADER_BYTES  (( TAK_MIN_FRAME_HEADER_BITS + 7 ) / 8)
+
+enum TAKMetaDataType {
+    TAK_METADATA_END = 0,
+    TAK_METADATA_STREAMINFO,
+    TAK_METADATA_SEEKTABLE,
+    TAK_METADATA_SIMPLE_WAVE_DATA,
+    TAK_METADATA_ENCODER,
+    TAK_METADATA_PADDING,
+    TAK_METADATA_MD5,
+    TAK_METADATA_LAST_FRAME,
+};
+
+enum TAKFrameSizeType {
+    TAK_FST_94ms = 0,
+    TAK_FST_125ms,
+    TAK_FST_188ms,
+    TAK_FST_250ms,
+    TAK_FST_4096,
+    TAK_FST_8192,
+    TAK_FST_16384,
+    TAK_FST_512,
+    TAK_FST_1024,
+    TAK_FST_2048,
+};
+
+typedef struct TAKStreamInfo {
+    int      codec;
+    int      data_type;
+    int      sample_rate;
+    int      channels;
+    int      bps;
+    int      frame_num;
+    int      frame_samples;
+    int      last_frame_samples;
+    uint64_t ch_layout;
+    int64_t  samples;
+} TAKStreamInfo;
+
+void ff_tak_init_crc(void);
+
+int ff_tak_check_crc(const uint8_t *buf, unsigned int buf_size);
+
+/**
+ * Parse the Streaminfo metadata block
+ * @param[in]  gb      pointer to GetBitContext
+ * @param[out] s       where parsed information is stored
+ */
+void avpriv_tak_parse_streaminfo(GetBitContext *gb, TAKStreamInfo *s);
+
+/**
+ * Validate and decode a frame header.
+ * @param      avctx AVCodecContext to use as av_log() context
+ * @param[in]  gb    GetBitContext from which to read frame header
+ * @param[out] s     frame information
+ * @param      log_level_offset  log level offset. can be used to silence error messages.
+ * @return non-zero on error, 0 if ok
+ */
+int ff_tak_decode_frame_header(AVCodecContext *avctx, GetBitContext *gb,
+                               TAKStreamInfo *s, int log_level_offset);
+#endif /* AVCODEC_TAK_H */

libavcodec/tak_parser.c

+/*
+ * TAK parser
+ * Copyright (c) 2012 Michael Niedermayer
+ *
+ * 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
+ * TAK parser
+ **/
+
+#include "parser.h"
+#include "tak.h"
+
+typedef struct TAKParseContext {
+    ParseContext  pc;
+    TAKStreamInfo ti;
+    int index;
+} TAKParseContext;
+
+static av_cold int tak_init(AVCodecParserContext *s)
+{
+    ff_tak_init_crc();
+    return 0;
+}
+
+static int tak_parse(AVCodecParserContext *s, AVCodecContext *avctx,
+                     const uint8_t **poutbuf, int *poutbuf_size,
+                     const uint8_t *buf, int buf_size)
+{
+    TAKParseContext *t = s->priv_data;
+    ParseContext *pc = &t->pc;
+    int next = END_NOT_FOUND;
+    GetBitContext gb;
+    int consumed = 0;
+    int needed = buf_size ? TAK_MAX_FRAME_HEADER_BYTES : 8;
+
+    if (s->flags & PARSER_FLAG_COMPLETE_FRAMES) {
+        TAKStreamInfo ti;
+        init_get_bits(&gb, buf, buf_size);
+        if (!ff_tak_decode_frame_header(avctx, &gb, &ti, 127))
+            s->duration = t->ti.last_frame_samples ? t->ti.last_frame_samples :
+                                                     t->ti.frame_samples;
+        *poutbuf      = buf;
+        *poutbuf_size = buf_size;
+        return buf_size;
+    }
+
+    while (buf_size || t->index + needed <= pc->index) {
+        if (buf_size && t->index + TAK_MAX_FRAME_HEADER_BYTES > pc->index) {
+            int tmp_buf_size = FFMIN(2 * TAK_MAX_FRAME_HEADER_BYTES, buf_size);
+            const uint8_t *tmp_buf = buf;
+
+            ff_combine_frame(pc, END_NOT_FOUND, &tmp_buf, &tmp_buf_size);
+            consumed += tmp_buf_size;
+            buf      += tmp_buf_size;
+            buf_size -= tmp_buf_size;
+        }
+
+        for (; t->index + needed <= pc->index; t->index++) {
+            if (pc->buffer[ t->index     ] == 0xFF &&
+                pc->buffer[ t->index + 1 ] == 0xA0) {
+                TAKStreamInfo ti;
+
+                init_get_bits(&gb, pc->buffer + t->index,
+                              8 * (pc->index - t->index));
+                if (!ff_tak_decode_frame_header(avctx, &gb,
+                        pc->frame_start_found ? &ti : &t->ti, 127) &&
+                    !ff_tak_check_crc(pc->buffer + t->index,
+                                      get_bits_count(&gb) / 8)) {
+                    if (!pc->frame_start_found) {
+                        pc->frame_start_found = 1;
+                        s->duration = t->ti.last_frame_samples ?
+                                      t->ti.last_frame_samples :
+                                      t->ti.frame_samples;
+                    } else {
+                        pc->frame_start_found = 0;
+                        next = t->index - pc->index;
+                        t->index = 0;
+                        goto found;
+                    }
+                }
+            }
+        }
+    }
+found:
+
+    if (consumed && !buf_size && next == END_NOT_FOUND ||
+        ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
+        *poutbuf      = NULL;
+        *poutbuf_size = 0;
+        return buf_size + consumed;
+    }
+
+    if (next != END_NOT_FOUND) {
+        next += consumed;
+        pc->overread = FFMAX(0, -next);
+    }
+
+    *poutbuf      = buf;
+    *poutbuf_size = buf_size;
+    return next;
+}
+
+AVCodecParser ff_tak_parser = {
+    .codec_ids      = { AV_CODEC_ID_TAK },
+    .priv_data_size = sizeof(TAKParseContext),
+    .parser_init    = tak_init,
+    .parser_parse   = tak_parse,
+    .parser_close   = ff_parse_close,
+};

libavcodec/version.h

@@ -29,7 +29,7 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVCODEC_VERSION_MAJOR 54
-#define LIBAVCODEC_VERSION_MINOR 64
+#define LIBAVCODEC_VERSION_MINOR 65
 #define LIBAVCODEC_VERSION_MICRO 100
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

libavformat/Makefile

@@ -333,6 +333,7 @@ OBJS-$(CONFIG_STR_DEMUXER)               += psxstr.o
 OBJS-$(CONFIG_SUBVIEWER_DEMUXER)         += subviewerdec.o
 OBJS-$(CONFIG_SWF_DEMUXER)               += swfdec.o swf.o
 OBJS-$(CONFIG_SWF_MUXER)                 += swfenc.o swf.o
+OBJS-$(CONFIG_TAK_DEMUXER)               += takdec.o apetag.o img2.o rawdec.o
 OBJS-$(CONFIG_THP_DEMUXER)               += thp.o
 OBJS-$(CONFIG_TIERTEXSEQ_DEMUXER)        += tiertexseq.o
 OBJS-$(CONFIG_MKVTIMESTAMP_V2_MUXER)     += mkvtimestamp_v2.o

libavformat/allformats.c

@@ -233,6 +233,7 @@ void av_register_all(void)
     REGISTER_DEMUXER  (STR, str);
     REGISTER_DEMUXER  (SUBVIEWER, subviewer);
     REGISTER_MUXDEMUX (SWF, swf);
+    REGISTER_DEMUXER  (TAK, tak);
     REGISTER_MUXER    (TG2, tg2);
     REGISTER_MUXER    (TGP, tgp);
     REGISTER_DEMUXER  (THP, thp);

libavformat/takdec.c

+/*
+ * Raw TAK demuxer
+ * 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 "libavcodec/tak.h"
+#include "avformat.h"
+#include "internal.h"
+#include "rawdec.h"
+#include "apetag.h"
+
+typedef struct TAKDemuxContext {
+    int      mlast_frame;
+    int64_t  left;
+} TAKDemuxContext;
+
+static int tak_probe(AVProbeData *p)
+{
+    if (!memcmp(p->buf, "tBaK", 4))
+        return AVPROBE_SCORE_MAX / 2;
+    return 0;
+}
+
+static int tak_read_header(AVFormatContext *s)
+{
+    TAKDemuxContext *tc = s->priv_data;
+    AVIOContext *pb = s->pb;
+    GetBitContext gb;
+    AVStream *st;
+    uint8_t *buffer = NULL;
+    int ret;
+
+    st = avformat_new_stream(s, 0);
+    if (!st)
+        return AVERROR(ENOMEM);
+
+    st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
+    st->codec->codec_id   = AV_CODEC_ID_TAK;
+    st->need_parsing      = AVSTREAM_PARSE_FULL_RAW;
+
+    tc->mlast_frame = 0;
+    if (avio_rl32(pb) != MKTAG('t', 'B', 'a', 'K')) {
+        avio_seek(pb, -4, SEEK_CUR);
+        return 0;
+    }
+
+    while (!url_feof(pb)) {
+        enum TAKMetaDataType type;
+        int size;
+
+        type = avio_r8(pb) & 0x7f;
+        size = avio_rl24(pb);
+
+        switch (type) {
+        case TAK_METADATA_STREAMINFO:
+        case TAK_METADATA_LAST_FRAME:
+        case TAK_METADATA_ENCODER:
+            buffer = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
+            if (!buffer)
+                return AVERROR(ENOMEM);
+
+            if (avio_read(pb, buffer, size) != size) {
+                av_freep(&buffer);
+                return AVERROR(EIO);
+            }
+
+            init_get_bits(&gb, buffer, size * 8);
+            break;
+        case TAK_METADATA_MD5: {
+            uint8_t md5[16];
+            int i;
+
+            if (size != 19)
+                return AVERROR_INVALIDDATA;
+            avio_read(pb, md5, 16);
+            avio_skip(pb, 3);
+            av_log(s, AV_LOG_VERBOSE, "MD5=");
+            for (i = 0; i < 16; i++)
+                av_log(s, AV_LOG_VERBOSE, "%02x", md5[i]);
+            av_log(s, AV_LOG_VERBOSE, "\n");
+            break;
+            }
+        case TAK_METADATA_END:
+            if (pb->seekable) {
+                int64_t curpos = avio_tell(pb);
+
+                ff_ape_parse_tag(s);
+                avio_seek(pb, curpos, SEEK_SET);
+            }
+            return 0;
+            break;
+        default:
+            ret = avio_skip(pb, size);
+            if (ret < 0)
+                return ret;
+        }
+
+        if (type == TAK_METADATA_STREAMINFO) {
+            TAKStreamInfo ti;
+
+            avpriv_tak_parse_streaminfo(&gb, &ti);
+            if (ti.samples > 0)
+                st->duration = ti.samples;
+            st->codec->bits_per_coded_sample = ti.bps;
+            if (ti.ch_layout)
+                st->codec->channel_layout = ti.ch_layout;
+            st->codec->sample_rate = ti.sample_rate;
+            st->codec->channels    = ti.channels;
+            st->start_time         = 0;
+            avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
+            st->codec->extradata      = buffer;
+            st->codec->extradata_size = size;
+            buffer = NULL;
+        } else if (type == TAK_METADATA_LAST_FRAME) {
+            if (size != 11)
+                return AVERROR_INVALIDDATA;
+            tc->mlast_frame = 1;
+            tc->left = get_bits_longlong(&gb, TAK_LAST_FRAME_POS_BITS) +
+                       get_bits(&gb, TAK_LAST_FRAME_SIZE_BITS);
+            av_freep(&buffer);
+        } else if (type == TAK_METADATA_ENCODER) {
+            av_log(s, AV_LOG_VERBOSE, "encoder version: %0X\n",
+                   get_bits_long(&gb, TAK_ENCODER_VERSION_BITS));
+            av_freep(&buffer);
+        }
+    }
+
+    return AVERROR_EOF;
+}
+
+static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    TAKDemuxContext *tc = s->priv_data;
+    int ret;
+
+    if (tc->mlast_frame) {
+        AVIOContext *pb = s->pb;
+        int64_t size;
+
+        size = FFMIN(tc->left, 1024);
+        if (!size)
+            return AVERROR_EOF;
+
+        ret = av_get_packet(pb, pkt, size);
+        if (ret < 0)
+            return ret;
+
+        pkt->stream_index = 0;
+        pkt->pos = avio_tell(pb);
+        tc->left -= ret;
+    } else {
+        ret = ff_raw_read_partial_packet(s, pkt);
+    }
+
+    return ret;
+}
+
+AVInputFormat ff_tak_demuxer = {
+    .name           = "tak",
+    .long_name      = NULL_IF_CONFIG_SMALL("raw TAK"),
+    .priv_data_size = sizeof(TAKDemuxContext),
+    .read_probe     = tak_probe,
+    .read_header    = tak_read_header,
+    .read_packet    = raw_read_packet,
+    .flags          = AVFMT_GENERIC_INDEX,
+    .extensions     = "tak",
+    .raw_codec_id   = AV_CODEC_ID_TAK,
+};

libavformat/version.h

@@ -30,8 +30,8 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFORMAT_VERSION_MAJOR 54
-#define LIBAVFORMAT_VERSION_MINOR 29
-#define LIBAVFORMAT_VERSION_MICRO 105
+#define LIBAVFORMAT_VERSION_MINOR 30
+#define LIBAVFORMAT_VERSION_MICRO 100
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
                                                LIBAVFORMAT_VERSION_MINOR, \

tests/fate/lossless-audio.mak

@@ -10,6 +10,9 @@ fate-lossless-monkeysaudio: CMD = md5 -i $(SAMPLES)/lossless-audio/luckynight-pa
 FATE_SAMPLES_LOSSLESS_AUDIO += fate-lossless-shorten
 fate-lossless-shorten: CMD = md5 -i $(SAMPLES)/lossless-audio/luckynight-partial.shn -f s16le
 
+FATE_SAMPLES_LOSSLESS_AUDIO += fate-lossless-tak
+fate-lossless-tak: CMD = crc -i $(SAMPLES)/lossless-audio/luckynight-partial.tak -f s16le
+
 FATE_SAMPLES_LOSSLESS_AUDIO += fate-lossless-tta
 fate-lossless-tta: CMD = crc -i $(SAMPLES)/lossless-audio/inside.tta
 

tests/ref/fate/lossless-tak

+CRC=0x4ec0971f