Musepack SV7 decoding support

Originally committed as revision 7375 to svn://svn.ffmpeg.org/ffmpeg/trunk

Changelog

@@ -66,6 +66,7 @@ version <next>
 - TIFF picture decoder
 - GIF picture decoder
 - Intel Music decoder
+- Musepack decoder
 
 version 0.4.9-pre1:
 

MAINTAINERS

@@ -137,6 +137,7 @@ Codecs:
   lzo.h, lzo.c                          Reimar Doeffinger
   mdec.c                                Michael Niedermayer
   mjpeg.c                               Michael Niedermayer
+  mpc*                                  Kostya Shishkov
   mpeg12.c, mpeg12data.h                Michael Niedermayer
   mpegvideo.c, mpegvideo.h              Michael Niedermayer
   msmpeg4.c, msmpeg4data.h              Michael Niedermayer
@@ -211,6 +212,7 @@ Muxers/Demuxers:
   matroska.c                            Aurelien Jacobs
   mov.c                                 Francois Revol, Michael Niedermayer
   movenc.c                              Michael Niedermayer, Baptiste Coudurier
+  mpc.c                                 Kostya Shishkov
   mpegts*                               Mans Rullgard
   mtv.c                                 Reynaldo H. Verdejo Pinochet
   mxf.c                                 Baptiste Coudurier

doc/ffmpeg-doc.texi

@@ -1090,6 +1090,8 @@ following image formats are supported:
 @item Cin Audio              @tab      @tab X
 @tab Codec used in Delphine Software games.
 @item Intel Music Coder      @tab      @tab X
+@item Musepack               @tab      @tab X
+@tab Only SV7 is supported
 @end multitable
 
 @code{X} means that encoding (resp. decoding) is supported.

libavcodec/Makefile

@@ -101,6 +101,7 @@ OBJS-$(CONFIG_MACE3_DECODER)           += mace.o
 OBJS-$(CONFIG_MACE6_DECODER)           += mace.o
 OBJS-$(CONFIG_MMVIDEO_DECODER)         += mmvideo.o
 OBJS-$(CONFIG_MP2_ENCODER)             += mpegaudio.o
+OBJS-$(CONFIG_MPC7_DECODER)            += mpc.o
 OBJS-$(CONFIG_MSRLE_DECODER)           += msrle.o
 OBJS-$(CONFIG_MSVIDEO1_DECODER)        += msvideo1.o
 OBJS-$(CONFIG_MSZH_DECODER)            += lcl.o

libavcodec/allcodecs.c

@@ -197,6 +197,7 @@ void avcodec_register_all(void)
     REGISTER_ENCODER(MP3LAME, mp3lame);
 #endif
     REGISTER_DECODER(MP3ON4, mp3on4);
+    REGISTER_DECODER(MPC7, mpc7);
 #ifdef CONFIG_LIBVORBIS
     if (!ENABLE_VORBIS_ENCODER)  REGISTER_ENCODER(OGGVORBIS, oggvorbis);
     if (!ENABLE_VORBIS_DECODER)  REGISTER_DECODER(OGGVORBIS, oggvorbis);

libavcodec/avcodec.h

@@ -37,8 +37,8 @@ extern "C" {
 #define AV_STRINGIFY(s)         AV_TOSTRING(s)
 #define AV_TOSTRING(s) #s
 
-#define LIBAVCODEC_VERSION_INT  ((51<<16)+(27<<8)+0)
-#define LIBAVCODEC_VERSION      51.27.0
+#define LIBAVCODEC_VERSION_INT  ((51<<16)+(28<<8)+0)
+#define LIBAVCODEC_VERSION      51.28.0
 #define LIBAVCODEC_BUILD        LIBAVCODEC_VERSION_INT
 
 #define LIBAVCODEC_IDENT        "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
@@ -237,6 +237,7 @@ enum CodecID {
     CODEC_ID_WAVPACK,
     CODEC_ID_DSICINAUDIO,
     CODEC_ID_IMC,
+    CODEC_ID_MUSEPACK7,
 
     /* subtitle codecs */
     CODEC_ID_DVD_SUBTITLE= 0x17000,
@@ -2317,6 +2318,7 @@ extern AVCodec dsicinaudio_decoder;
 extern AVCodec tiertexseqvideo_decoder;
 extern AVCodec tiff_decoder;
 extern AVCodec imc_decoder;
+extern AVCodec mpc7_decoder;
 
 /* pcm codecs */
 #define PCM_CODEC(id, name) \

libavformat/Makefile

@@ -62,6 +62,7 @@ OBJS-$(CONFIG_TG2_MUXER)                 += movenc.o riff.o isom.o
 OBJS-$(CONFIG_MP3_DEMUXER)               += mp3.o
 OBJS-$(CONFIG_MP2_MUXER)                 += mp3.o
 OBJS-$(CONFIG_MP3_MUXER)                 += mp3.o
+OBJS-$(CONFIG_MPC_DEMUXER)               += mpc.o
 OBJS-$(CONFIG_MPEG1SYSTEM_MUXER)         += mpeg.o
 OBJS-$(CONFIG_MPEG1VCD_MUXER)            += mpeg.o
 OBJS-$(CONFIG_MPEG2VOB_MUXER)            += mpeg.o

libavformat/allformats.c

@@ -100,6 +100,7 @@ void av_register_all(void)
     REGISTER_MUXER   (MP2, mp2);
     REGISTER_MUXDEMUX(MP3, mp3);
     REGISTER_MUXER   (MP4, mp4);
+    REGISTER_DEMUXER (MPC, mpc);
     REGISTER_MUXER   (MPEG1SYSTEM, mpeg1system);
     REGISTER_MUXER   (MPEG1VCD, mpeg1vcd);
     REGISTER_MUXER   (MPEG1VIDEO, mpeg1video);

libavformat/allformats.h

@@ -82,6 +82,7 @@ extern AVOutputFormat tg2_muxer;
 extern AVInputFormat mp3_demuxer;
 extern AVOutputFormat mp2_muxer;
 extern AVOutputFormat mp3_muxer;
+extern AVInputFormat mpc_demuxer;
 extern AVOutputFormat mpeg1system_muxer;
 extern AVOutputFormat mpeg1vcd_muxer;
 extern AVOutputFormat mpeg2vob_muxer;

libavformat/avformat.h

@@ -25,8 +25,8 @@
 extern "C" {
 #endif
 
-#define LIBAVFORMAT_VERSION_INT ((51<<16)+(6<<8)+0)
-#define LIBAVFORMAT_VERSION     51.6.0
+#define LIBAVFORMAT_VERSION_INT ((51<<16)+(7<<8)+0)
+#define LIBAVFORMAT_VERSION     51.7.0
 #define LIBAVFORMAT_BUILD       LIBAVFORMAT_VERSION_INT
 
 #define LIBAVFORMAT_IDENT       "Lavf" AV_STRINGIFY(LIBAVFORMAT_VERSION)

libavformat/mpc.c

+/*
+ * Musepack demuxer
+ * Copyright (c) 2006 Konstantin Shishkov
+ *
+ * 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include "avformat.h"
+#include "bitstream.h"
+
+#define MPC_FRAMESIZE  1152
+
+static const int mpc_rate[4] = { 44100, 48000, 37800, 32000 };
+typedef struct {
+    int64_t pos;
+    int size, skip;
+}MPCFrame;
+
+typedef struct {
+    int ver;
+    uint32_t curframe, lastframe;
+    uint32_t fcount;
+    MPCFrame *frames;
+    int curbits;
+    int frames_noted;
+} MPCContext;
+
+static int mpc_probe(AVProbeData *p)
+{
+    const uint8_t *d = p->buf;
+    if (p->buf_size < 32)
+        return 0;
+    if (d[0] == 'M' && d[1] == 'P' && d[2] == '+' && (d[3] == 0x17 || d[3] == 0x7))
+        return AVPROBE_SCORE_MAX;
+    return 0;
+}
+
+static int mpc_read_header(AVFormatContext *s, AVFormatParameters *ap)
+{
+    MPCContext *c = s->priv_data;
+    AVStream *st;
+
+    if(get_le24(&s->pb) != MKTAG('M', 'P', '+', 0)){
+        av_log(s, AV_LOG_ERROR, "Not a Musepack file\n");
+        return -1;
+    }
+    c->ver = get_byte(&s->pb);
+    if(c->ver != 0x07 && c->ver != 0x17){
+        av_log(s, AV_LOG_ERROR, "Can demux Musepack SV7, got version %02X\n", c->ver);
+        return -1;
+    }
+    c->fcount = get_le32(&s->pb);
+    if((int64_t)c->fcount * sizeof(MPCFrame) >= UINT_MAX){
+        av_log(s, AV_LOG_ERROR, "Too many frames, seeking is not possible\n");
+        return -1;
+    }
+    c->frames = av_malloc(c->fcount * sizeof(MPCFrame));
+    c->curframe = 0;
+    c->lastframe = -1;
+    c->curbits = 8;
+
+    st = av_new_stream(s, 0);
+    if (!st)
+        return AVERROR_NOMEM;
+    st->codec->codec_type = CODEC_TYPE_AUDIO;
+    st->codec->codec_id = CODEC_ID_MUSEPACK7;
+    st->codec->channels = 2;
+    st->codec->bits_per_sample = 16;
+
+    st->codec->extradata_size = 16;
+    st->codec->extradata = av_mallocz(st->codec->extradata_size+FF_INPUT_BUFFER_PADDING_SIZE);
+    get_buffer(&s->pb, st->codec->extradata, 16);
+    st->codec->sample_rate = mpc_rate[st->codec->extradata[2] & 3];
+    av_set_pts_info(st, 32, MPC_FRAMESIZE, st->codec->sample_rate);
+    /* scan for seekpoints */
+    s->start_time = 0;
+    s->duration = (int64_t)c->fcount * MPC_FRAMESIZE * AV_TIME_BASE / st->codec->sample_rate;
+
+    return 0;
+}
+
+static int mpc_read_packet(AVFormatContext *s, AVPacket *pkt)
+{
+    MPCContext *c = s->priv_data;
+    int ret, size, size2, curbits, cur = c->curframe;
+    int64_t tmp, pos;
+
+    if (c->curframe > c->fcount)
+        return -1;
+
+    if(c->curframe != c->lastframe + 1){
+        url_fseek(&s->pb, c->frames[c->curframe].pos, SEEK_SET);
+        c->curbits = c->frames[c->curframe].skip;
+    }
+    c->lastframe = c->curframe;
+    c->curframe++;
+    curbits = c->curbits;
+    pos = url_ftell(&s->pb);
+    tmp = get_le32(&s->pb);
+    if(curbits <= 12){
+        size2 = (tmp >> (12 - curbits)) & 0xFFFFF;
+    }else{
+        tmp = (tmp << 32) | get_le32(&s->pb);
+        size2 = (tmp >> (44 - curbits)) & 0xFFFFF;
+    }
+    curbits += 20;
+    url_fseek(&s->pb, pos, SEEK_SET);
+
+    size = ((size2 + curbits + 31) & ~31) >> 3;
+    if(cur == c->frames_noted){
+        c->frames[cur].pos = pos;
+        c->frames[cur].size = size;
+        c->frames[cur].skip = curbits - 20;
+        av_add_index_entry(s->streams[0], cur, cur, size, 0, AVINDEX_KEYFRAME);
+        c->frames_noted++;
+    }
+    c->curbits = (curbits + size2) & 0x1F;
+
+    if (av_new_packet(pkt, size) < 0)
+        return AVERROR_IO;
+
+    pkt->data[0] = curbits;
+    pkt->data[1] = (c->curframe > c->fcount);
+
+    pkt->stream_index = 0;
+    ret = get_buffer(&s->pb, pkt->data + 4, size);
+    if(c->curbits)
+        url_fseek(&s->pb, -4, SEEK_CUR);
+    if(ret < size){
+        av_free_packet(pkt);
+        return AVERROR_IO;
+    }
+    pkt->size = ret + 4;
+
+    return 0;
+}
+
+static int mpc_read_close(AVFormatContext *s)
+{
+    MPCContext *c = s->priv_data;
+
+    av_freep(&c->frames);
+    return 0;
+}
+
+static int mpc_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
+{
+    AVStream *st = s->streams[stream_index];
+    MPCContext *c = s->priv_data;
+    int index = av_index_search_timestamp(st, timestamp, flags);
+    if (index < 0)
+        return -1;
+    c->curframe = st->index_entries[index].pos;
+
+    return 0;
+}
+
+
+AVInputFormat mpc_demuxer = {
+    "mpc",
+    "musepack",
+    sizeof(MPCContext),
+    mpc_probe,
+    mpc_read_header,
+    mpc_read_packet,
+    mpc_read_close,
+    mpc_read_seek,
+    .extensions = "mpc",
+};