*/
/**
- * @file mpc7.c Musepack SV7 decoder
+ * @file libavcodec/mpc7.c Musepack SV7 decoder
* MPEG Audio Layer 1/2 -like codec with frames of 1152 samples
* divided into 32 subbands.
*/
+#include "libavutil/lfg.h"
#include "avcodec.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "dsputil.h"
-#include "random.h"
-
-#ifdef CONFIG_MPEGAUDIO_HP
-#define USE_HIGHPRECISION
-#endif
#include "mpegaudio.h"
#include "mpc.h"
static VLC scfi_vlc, dscf_vlc, hdr_vlc, quant_vlc[MPC7_QUANT_VLC_TABLES][2];
-static int mpc7_decode_init(AVCodecContext * avctx)
+static const uint16_t quant_offsets[MPC7_QUANT_VLC_TABLES*2 + 1] =
+{
+ 0, 512, 1024, 1536, 2052, 2564, 3076, 3588, 4100, 4612, 5124,
+ 5636, 6164, 6676, 7224
+};
+
+
+static av_cold int mpc7_decode_init(AVCodecContext * avctx)
{
int i, j;
MPCContext *c = avctx->priv_data;
uint8_t buf[16];
static int vlc_initialized = 0;
+ static VLC_TYPE scfi_table[1 << MPC7_SCFI_BITS][2];
+ static VLC_TYPE dscf_table[1 << MPC7_DSCF_BITS][2];
+ static VLC_TYPE hdr_table[1 << MPC7_HDR_BITS][2];
+ static VLC_TYPE quant_tables[7224][2];
+
if(avctx->extradata_size < 16){
av_log(avctx, AV_LOG_ERROR, "Too small extradata size (%i)!\n", avctx->extradata_size);
return -1;
}
memset(c->oldDSCF, 0, sizeof(c->oldDSCF));
- av_init_random(0xDEADBEEF, &c->rnd);
+ av_lfg_init(&c->rnd, 0xDEADBEEF);
dsputil_init(&c->dsp, avctx);
c->dsp.bswap_buf((uint32_t*)buf, (const uint32_t*)avctx->extradata, 4);
ff_mpc_init();
av_log(avctx, AV_LOG_ERROR, "Too many bands: %i\n", c->maxbands);
return -1;
}
- skip_bits(&gb, 88);
+ skip_bits_long(&gb, 88);
c->gapless = get_bits1(&gb);
c->lastframelen = get_bits(&gb, 11);
av_log(avctx, AV_LOG_DEBUG, "IS: %d, MSS: %d, TG: %d, LFL: %d, bands: %d\n",
if(vlc_initialized) return 0;
av_log(avctx, AV_LOG_DEBUG, "Initing VLC\n");
+ scfi_vlc.table = scfi_table;
+ scfi_vlc.table_allocated = 1 << MPC7_SCFI_BITS;
if(init_vlc(&scfi_vlc, MPC7_SCFI_BITS, MPC7_SCFI_SIZE,
&mpc7_scfi[1], 2, 1,
- &mpc7_scfi[0], 2, 1, INIT_VLC_USE_STATIC)){
+ &mpc7_scfi[0], 2, 1, INIT_VLC_USE_NEW_STATIC)){
av_log(avctx, AV_LOG_ERROR, "Cannot init SCFI VLC\n");
return -1;
}
+ dscf_vlc.table = dscf_table;
+ dscf_vlc.table_allocated = 1 << MPC7_DSCF_BITS;
if(init_vlc(&dscf_vlc, MPC7_DSCF_BITS, MPC7_DSCF_SIZE,
&mpc7_dscf[1], 2, 1,
- &mpc7_dscf[0], 2, 1, INIT_VLC_USE_STATIC)){
+ &mpc7_dscf[0], 2, 1, INIT_VLC_USE_NEW_STATIC)){
av_log(avctx, AV_LOG_ERROR, "Cannot init DSCF VLC\n");
return -1;
}
+ hdr_vlc.table = hdr_table;
+ hdr_vlc.table_allocated = 1 << MPC7_HDR_BITS;
if(init_vlc(&hdr_vlc, MPC7_HDR_BITS, MPC7_HDR_SIZE,
&mpc7_hdr[1], 2, 1,
- &mpc7_hdr[0], 2, 1, INIT_VLC_USE_STATIC)){
+ &mpc7_hdr[0], 2, 1, INIT_VLC_USE_NEW_STATIC)){
av_log(avctx, AV_LOG_ERROR, "Cannot init HDR VLC\n");
return -1;
}
for(i = 0; i < MPC7_QUANT_VLC_TABLES; i++){
for(j = 0; j < 2; j++){
+ quant_vlc[i][j].table = &quant_tables[quant_offsets[i*2 + j]];
+ quant_vlc[i][j].table_allocated = quant_offsets[i*2 + j + 1] - quant_offsets[i*2 + j];
if(init_vlc(&quant_vlc[i][j], 9, mpc7_quant_vlc_sizes[i],
&mpc7_quant_vlc[i][j][1], 4, 2,
- &mpc7_quant_vlc[i][j][0], 4, 2, INIT_VLC_USE_STATIC)){
+ &mpc7_quant_vlc[i][j][0], 4, 2, INIT_VLC_USE_NEW_STATIC)){
av_log(avctx, AV_LOG_ERROR, "Cannot init QUANT VLC %i,%i\n",i,j);
return -1;
}
}
}
vlc_initialized = 1;
+ avctx->sample_fmt = SAMPLE_FMT_S16;
+ avctx->channel_layout = (avctx->channels==2) ? CH_LAYOUT_STEREO : CH_LAYOUT_MONO;
return 0;
}
switch(idx){
case -1:
for(i = 0; i < SAMPLES_PER_BAND; i++){
- *dst++ = (av_random(&c->rnd) & 0x3FC) - 510;
+ *dst++ = (av_lfg_get(&c->rnd) & 0x3FC) - 510;
}
break;
case 1:
static int mpc7_decode_frame(AVCodecContext * avctx,
void *data, int *data_size,
- const uint8_t * buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
MPCContext *c = avctx->priv_data;
GetBitContext gb;
uint8_t *bits;
}
AVCodec mpc7_decoder = {
- "mpc sv7",
+ "mpc7",
CODEC_TYPE_AUDIO,
CODEC_ID_MUSEPACK7,
sizeof(MPCContext),
NULL,
mpc7_decode_frame,
.flush = mpc7_decode_flush,
+ .long_name = NULL_IF_CONFIG_SMALL("Musepack SV7"),
};