* MPEG Audio decoder.
*/
-//#define DEBUG
#include "avcodec.h"
#include "bitstream.h"
#include "dsputil.h"
#define HEADER_SIZE 4
-/**
- * Context for MP3On4 decoder
- */
-typedef struct MP3On4DecodeContext {
- int frames; ///< number of mp3 frames per block (number of mp3 decoder instances)
- int chan_cfg; ///< channel config number
- int syncword; ///< syncword patch
- MPADecodeContext *mp3decctx[5]; ///< MPADecodeContext for every decoder instance
-} MP3On4DecodeContext;
-
/* layer 3 "granule" */
typedef struct GranuleDef {
uint8_t scfsi;
/* vlc structure for decoding layer 3 huffman tables */
static VLC huff_vlc[16];
+static VLC_TYPE huff_vlc_tables[
+ 0+128+128+128+130+128+154+166+
+ 142+204+190+170+542+460+662+414
+ ][2];
+static const int huff_vlc_tables_sizes[16] = {
+ 0, 128, 128, 128, 130, 128, 154, 166,
+ 142, 204, 190, 170, 542, 460, 662, 414
+};
static VLC huff_quad_vlc[2];
+static VLC_TYPE huff_quad_vlc_tables[128+16][2];
+static const int huff_quad_vlc_tables_sizes[2] = {
+ 128, 16
+};
/* computed from band_size_long */
static uint16_t band_index_long[9][23];
/* XXX: free when all decoders are closed */
#else
avctx->sample_fmt= SAMPLE_FMT_S16;
#endif
- s->error_resilience= avctx->error_resilience;
+ s->error_recognition= avctx->error_recognition;
if(avctx->antialias_algo != FF_AA_FLOAT)
s->compute_antialias= compute_antialias_integer;
s->compute_antialias= compute_antialias_float;
if (!init && !avctx->parse_only) {
+ int offset;
+
/* scale factors table for layer 1/2 */
for(i=0;i<64;i++) {
int shift, mod;
ff_mpa_synth_init(window);
/* huffman decode tables */
+ offset = 0;
for(i=1;i<16;i++) {
const HuffTable *h = &mpa_huff_tables[i];
int xsize, x, y;
}
/* XXX: fail test */
+ huff_vlc[i].table = huff_vlc_tables+offset;
+ huff_vlc[i].table_allocated = huff_vlc_tables_sizes[i];
init_vlc(&huff_vlc[i], 7, 512,
- tmp_bits, 1, 1, tmp_codes, 2, 2, 1);
+ tmp_bits, 1, 1, tmp_codes, 2, 2,
+ INIT_VLC_USE_NEW_STATIC);
+ offset += huff_vlc_tables_sizes[i];
}
+ assert(offset == sizeof(huff_vlc_tables)/(sizeof(VLC_TYPE)*2));
+
+ offset = 0;
for(i=0;i<2;i++) {
+ huff_quad_vlc[i].table = huff_quad_vlc_tables+offset;
+ huff_quad_vlc[i].table_allocated = huff_quad_vlc_tables_sizes[i];
init_vlc(&huff_quad_vlc[i], i == 0 ? 7 : 4, 16,
- mpa_quad_bits[i], 1, 1, mpa_quad_codes[i], 1, 1, 1);
+ mpa_quad_bits[i], 1, 1, mpa_quad_codes[i], 1, 1,
+ INIT_VLC_USE_NEW_STATIC);
+ offset += huff_quad_vlc_tables_sizes[i];
}
+ assert(offset == sizeof(huff_quad_vlc_tables)/(sizeof(VLC_TYPE)*2));
for(i=0;i<9;i++) {
k = 0;
/* normalized to FRAC_BITS */
table_4_3_value[i] = m;
-// av_log(NULL, AV_LOG_DEBUG, "%d %d %f\n", i, m, pow((double)i, 4.0 / 3.0));
table_4_3_exp[i] = -e;
}
for(i=0; i<512*16; i++){
csa_table_float[i][1] = ca;
csa_table_float[i][2] = ca + cs;
csa_table_float[i][3] = ca - cs;
-// printf("%d %d %d %d\n", FIX(cs), FIX(cs-1), FIX(ca), FIX(cs)-FIX(ca));
-// av_log(NULL, AV_LOG_DEBUG,"%f %f %f %f\n", cs, ca, ca+cs, ca-cs);
}
/* compute mdct windows */
mdct_win[j][i/3] = FIXHR((d / (1<<5)));
else
mdct_win[j][i ] = FIXHR((d / (1<<5)));
-// av_log(NULL, AV_LOG_DEBUG, "%2d %d %f\n", i,j,d / (1<<5));
}
}
}
}
-#if defined(DEBUG)
- for(j=0;j<8;j++) {
- av_log(avctx, AV_LOG_DEBUG, "win%d=\n", j);
- for(i=0;i<36;i++)
- av_log(avctx, AV_LOG_DEBUG, "%f, ", (double)mdct_win[j][i] / FRAC_ONE);
- av_log(avctx, AV_LOG_DEBUG, "\n");
- }
-#endif
init = 1;
}
-#ifdef DEBUG
- s->frame_count = 0;
-#endif
if (avctx->codec_id == CODEC_ID_MP3ADU)
s->adu_mode = 1;
return 0;
/* signed 16x16 -> 32 multiply */
#define MULS(ra, rb) MUL16(ra, rb)
+#define MLSS(rt, ra, rb) MLS16(rt, ra, rb)
+
#else
static inline int round_sample(int64_t *sum)
}
# define MULS(ra, rb) MUL64(ra, rb)
+# define MACS(rt, ra, rb) MAC64(rt, ra, rb)
+# define MLSS(rt, ra, rb) MLS64(rt, ra, rb)
#endif
-#define SUM8(sum, op, w, p) \
-{ \
- sum op MULS((w)[0 * 64], p[0 * 64]);\
- sum op MULS((w)[1 * 64], p[1 * 64]);\
- sum op MULS((w)[2 * 64], p[2 * 64]);\
- sum op MULS((w)[3 * 64], p[3 * 64]);\
- sum op MULS((w)[4 * 64], p[4 * 64]);\
- sum op MULS((w)[5 * 64], p[5 * 64]);\
- sum op MULS((w)[6 * 64], p[6 * 64]);\
- sum op MULS((w)[7 * 64], p[7 * 64]);\
+#define SUM8(op, sum, w, p) \
+{ \
+ op(sum, (w)[0 * 64], p[0 * 64]); \
+ op(sum, (w)[1 * 64], p[1 * 64]); \
+ op(sum, (w)[2 * 64], p[2 * 64]); \
+ op(sum, (w)[3 * 64], p[3 * 64]); \
+ op(sum, (w)[4 * 64], p[4 * 64]); \
+ op(sum, (w)[5 * 64], p[5 * 64]); \
+ op(sum, (w)[6 * 64], p[6 * 64]); \
+ op(sum, (w)[7 * 64], p[7 * 64]); \
}
#define SUM8P2(sum1, op1, sum2, op2, w1, w2, p) \
{ \
int tmp;\
tmp = p[0 * 64];\
- sum1 op1 MULS((w1)[0 * 64], tmp);\
- sum2 op2 MULS((w2)[0 * 64], tmp);\
+ op1(sum1, (w1)[0 * 64], tmp);\
+ op2(sum2, (w2)[0 * 64], tmp);\
tmp = p[1 * 64];\
- sum1 op1 MULS((w1)[1 * 64], tmp);\
- sum2 op2 MULS((w2)[1 * 64], tmp);\
+ op1(sum1, (w1)[1 * 64], tmp);\
+ op2(sum2, (w2)[1 * 64], tmp);\
tmp = p[2 * 64];\
- sum1 op1 MULS((w1)[2 * 64], tmp);\
- sum2 op2 MULS((w2)[2 * 64], tmp);\
+ op1(sum1, (w1)[2 * 64], tmp);\
+ op2(sum2, (w2)[2 * 64], tmp);\
tmp = p[3 * 64];\
- sum1 op1 MULS((w1)[3 * 64], tmp);\
- sum2 op2 MULS((w2)[3 * 64], tmp);\
+ op1(sum1, (w1)[3 * 64], tmp);\
+ op2(sum2, (w2)[3 * 64], tmp);\
tmp = p[4 * 64];\
- sum1 op1 MULS((w1)[4 * 64], tmp);\
- sum2 op2 MULS((w2)[4 * 64], tmp);\
+ op1(sum1, (w1)[4 * 64], tmp);\
+ op2(sum2, (w2)[4 * 64], tmp);\
tmp = p[5 * 64];\
- sum1 op1 MULS((w1)[5 * 64], tmp);\
- sum2 op2 MULS((w2)[5 * 64], tmp);\
+ op1(sum1, (w1)[5 * 64], tmp);\
+ op2(sum2, (w2)[5 * 64], tmp);\
tmp = p[6 * 64];\
- sum1 op1 MULS((w1)[6 * 64], tmp);\
- sum2 op2 MULS((w2)[6 * 64], tmp);\
+ op1(sum1, (w1)[6 * 64], tmp);\
+ op2(sum2, (w2)[6 * 64], tmp);\
tmp = p[7 * 64];\
- sum1 op1 MULS((w1)[7 * 64], tmp);\
- sum2 op2 MULS((w2)[7 * 64], tmp);\
+ op1(sum1, (w1)[7 * 64], tmp);\
+ op2(sum2, (w2)[7 * 64], tmp);\
}
void ff_mpa_synth_init(MPA_INT *window)
sum = *dither_state;
p = synth_buf + 16;
- SUM8(sum, +=, w, p);
+ SUM8(MACS, sum, w, p);
p = synth_buf + 48;
- SUM8(sum, -=, w + 32, p);
+ SUM8(MLSS, sum, w + 32, p);
*samples = round_sample(&sum);
samples += incr;
w++;
for(j=1;j<16;j++) {
sum2 = 0;
p = synth_buf + 16 + j;
- SUM8P2(sum, +=, sum2, -=, w, w2, p);
+ SUM8P2(sum, MACS, sum2, MLSS, w, w2, p);
p = synth_buf + 48 - j;
- SUM8P2(sum, -=, sum2, -=, w + 32, w2 + 32, p);
+ SUM8P2(sum, MLSS, sum2, MLSS, w + 32, w2 + 32, p);
*samples = round_sample(&sum);
samples += incr;
}
p = synth_buf + 32;
- SUM8(sum, -=, w + 32, p);
+ SUM8(MLSS, sum, w + 32, p);
*samples = round_sample(&sum);
*dither_state= sum;
j += 1 << bit_alloc_bits;
}
-#ifdef DEBUG
- {
- for(ch=0;ch<s->nb_channels;ch++) {
- for(i=0;i<sblimit;i++)
- dprintf(s->avctx, " %d", bit_alloc[ch][i]);
- dprintf(s->avctx, "\n");
- }
- }
-#endif
-
/* scale codes */
for(i=0;i<sblimit;i++) {
for(ch=0;ch<s->nb_channels;ch++) {
}
}
-#ifdef DEBUG
- for(ch=0;ch<s->nb_channels;ch++) {
- for(i=0;i<sblimit;i++) {
- if (bit_alloc[ch][i]) {
- sf = scale_factors[ch][i];
- dprintf(s->avctx, " %d %d %d", sf[0], sf[1], sf[2]);
- } else {
- dprintf(s->avctx, " -");
- }
- }
- dprintf(s->avctx, "\n");
- }
-#endif
-
/* samples */
for(k=0;k<3;k++) {
for(l=0;l<12;l+=3) {
part. We must go back into the data */
s_index -= 4;
skip_bits_long(&s->gb, last_pos - pos);
- av_log(NULL, AV_LOG_INFO, "overread, skip %d enddists: %d %d\n", last_pos - pos, end_pos-pos, end_pos2-pos);
- if(s->error_resilience >= FF_ER_COMPLIANT)
+ av_log(s->avctx, AV_LOG_INFO, "overread, skip %d enddists: %d %d\n", last_pos - pos, end_pos-pos, end_pos2-pos);
+ if(s->error_recognition >= FF_ER_COMPLIANT)
s_index=0;
break;
}
/* skip extension bits */
bits_left = end_pos2 - get_bits_count(&s->gb);
//av_log(NULL, AV_LOG_ERROR, "left:%d buf:%p\n", bits_left, s->in_gb.buffer);
- if (bits_left < 0/* || bits_left > 500*/) {
- av_log(NULL, AV_LOG_ERROR, "bits_left=%d\n", bits_left);
+ if (bits_left < 0 && s->error_recognition >= FF_ER_COMPLIANT) {
+ av_log(s->avctx, AV_LOG_ERROR, "bits_left=%d\n", bits_left);
s_index=0;
- }else if(bits_left > 0 && s->error_resilience >= FF_ER_AGGRESSIVE){
- av_log(NULL, AV_LOG_ERROR, "bits_left=%d\n", bits_left);
+ }else if(bits_left > 0 && s->error_recognition >= FF_ER_AGGRESSIVE){
+ av_log(s->avctx, AV_LOG_ERROR, "bits_left=%d\n", bits_left);
s_index=0;
}
memset(&g->sb_hybrid[s_index], 0, sizeof(*g->sb_hybrid)*(576 - s_index));
}
}
-#if defined(DEBUG)
-void sample_dump(int fnum, int32_t *tab, int n)
-{
- static FILE *files[16], *f;
- char buf[512];
- int i;
- int32_t v;
-
- f = files[fnum];
- if (!f) {
- snprintf(buf, sizeof(buf), "/tmp/out%d.%s.pcm",
- fnum,
-#ifdef USE_HIGHPRECISION
- "hp"
-#else
- "lp"
-#endif
- );
- f = fopen(buf, "w");
- if (!f)
- return;
- files[fnum] = f;
- }
-
- if (fnum == 0) {
- static int pos = 0;
- av_log(NULL, AV_LOG_DEBUG, "pos=%d\n", pos);
- for(i=0;i<n;i++) {
- av_log(NULL, AV_LOG_DEBUG, " %0.4f", (double)tab[i] / FRAC_ONE);
- if ((i % 18) == 17)
- av_log(NULL, AV_LOG_DEBUG, "\n");
- }
- pos += n;
- }
- for(i=0;i<n;i++) {
- /* normalize to 23 frac bits */
- v = tab[i] << (23 - FRAC_BITS);
- fwrite(&v, 1, sizeof(int32_t), f);
- }
-}
-#endif
-
-
/* main layer3 decoding function */
static int mp_decode_layer3(MPADecodeContext *s)
{
if (blocksplit_flag) {
g->block_type = get_bits(&s->gb, 2);
if (g->block_type == 0){
- av_log(NULL, AV_LOG_ERROR, "invalid block type\n");
+ av_log(s->avctx, AV_LOG_ERROR, "invalid block type\n");
return -1;
}
g->switch_point = get_bits1(&s->gb);
for(ch=0;ch<s->nb_channels;ch++) {
g = &granules[ch][gr];
if(get_bits_count(&s->gb)<0){
- av_log(NULL, AV_LOG_ERROR, "mdb:%d, lastbuf:%d skipping granule %d\n",
+ av_log(s->avctx, AV_LOG_ERROR, "mdb:%d, lastbuf:%d skipping granule %d\n",
main_data_begin, s->last_buf_size, gr);
skip_bits_long(&s->gb, g->part2_3_length);
memset(g->sb_hybrid, 0, sizeof(g->sb_hybrid));
}
g->scale_factors[j++] = 0;
}
-#if defined(DEBUG)
- {
- dprintf(s->avctx, "scfsi=%x gr=%d ch=%d scale_factors:\n",
- g->scfsi, gr, ch);
- for(i=0;i<j;i++)
- dprintf(s->avctx, " %d", g->scale_factors[i]);
- dprintf(s->avctx, "\n");
- }
-#endif
} else {
int tindex, tindex2, slen[4], sl, sf;
/* XXX: should compute exact size */
for(;j<40;j++)
g->scale_factors[j] = 0;
-#if defined(DEBUG)
- {
- dprintf(s->avctx, "gr=%d ch=%d scale_factors:\n",
- gr, ch);
- for(i=0;i<40;i++)
- dprintf(s->avctx, " %d", g->scale_factors[i]);
- dprintf(s->avctx, "\n");
- }
-#endif
}
exponents_from_scale_factors(s, g, exponents);
/* read Huffman coded residue */
huffman_decode(s, g, exponents, bits_pos + g->part2_3_length);
-#if defined(DEBUG)
- sample_dump(0, g->sb_hybrid, 576);
-#endif
} /* ch */
if (s->nb_channels == 2)
g = &granules[ch][gr];
reorder_block(s, g);
-#if defined(DEBUG)
- sample_dump(0, g->sb_hybrid, 576);
-#endif
s->compute_antialias(s, g);
-#if defined(DEBUG)
- sample_dump(1, g->sb_hybrid, 576);
-#endif
compute_imdct(s, g, &s->sb_samples[ch][18 * gr][0], s->mdct_buf[ch]);
-#if defined(DEBUG)
- sample_dump(2, &s->sb_samples[ch][18 * gr][0], 576);
-#endif
}
} /* gr */
if(get_bits_count(&s->gb)<0)
memmove(s->last_buf, s->gb.buffer + (get_bits_count(&s->gb)>>3), i);
s->last_buf_size=i;
}else
- av_log(NULL, AV_LOG_ERROR, "invalid old backstep %d\n", i);
+ av_log(s->avctx, AV_LOG_ERROR, "invalid old backstep %d\n", i);
s->gb= s->in_gb;
s->in_gb.buffer= NULL;
}
i= (s->gb.size_in_bits - get_bits_count(&s->gb))>>3;
if(i<0 || i > BACKSTEP_SIZE || nb_frames<0){
- av_log(NULL, AV_LOG_ERROR, "invalid new backstep %d\n", i);
+ if(i<0)
+ av_log(s->avctx, AV_LOG_ERROR, "invalid new backstep %d\n", i);
i= FFMIN(BACKSTEP_SIZE, buf_size - HEADER_SIZE);
}
assert(i <= buf_size - HEADER_SIZE && i>= 0);
break;
}
-#if defined(DEBUG)
- for(i=0;i<nb_frames;i++) {
- for(ch=0;ch<s->nb_channels;ch++) {
- int j;
- dprintf(s->avctx, "%d-%d:", i, ch);
- for(j=0;j<SBLIMIT;j++)
- dprintf(s->avctx, " %0.6f", (double)s->sb_samples[ch][i][j] / FRAC_ONE);
- dprintf(s->avctx, "\n");
- }
- }
-#endif
+
/* apply the synthesis filter */
for(ch=0;ch<s->nb_channels;ch++) {
samples_ptr = samples + ch;
samples_ptr += 32 * s->nb_channels;
}
}
-#ifdef DEBUG
- s->frame_count++;
-#endif
+
return nb_frames * 32 * sizeof(OUT_INT) * s->nb_channels;
}
#ifdef CONFIG_MP3ON4_DECODER
+/**
+ * Context for MP3On4 decoder
+ */
+typedef struct MP3On4DecodeContext {
+ int frames; ///< number of mp3 frames per block (number of mp3 decoder instances)
+ int syncword; ///< syncword patch
+ const uint8_t *coff; ///< channels offsets in output buffer
+ MPADecodeContext *mp3decctx[5]; ///< MPADecodeContext for every decoder instance
+} MP3On4DecodeContext;
+
#include "mpeg4audio.h"
/* Next 3 arrays are indexed by channel config number (passed via codecdata) */
av_log(avctx, AV_LOG_ERROR, "Invalid channel config number.\n");
return -1;
}
- s->chan_cfg = cfg.chan_config;
- s->frames = mp3Frames[s->chan_cfg];
- avctx->channels = ff_mpeg4audio_channels[s->chan_cfg];
+ s->frames = mp3Frames[cfg.chan_config];
+ s->coff = chan_offset[cfg.chan_config];
+ avctx->channels = ff_mpeg4audio_channels[cfg.chan_config];
if (cfg.sample_rate < 16000)
s->syncword = 0xffe00000;
{
MP3On4DecodeContext *s = avctx->priv_data;
MPADecodeContext *m;
- int len, out_size = 0;
+ int fsize, len = buf_size, out_size = 0;
uint32_t header;
OUT_INT *out_samples = data;
OUT_INT decoded_buf[MPA_FRAME_SIZE * MPA_MAX_CHANNELS];
OUT_INT *outptr, *bp;
- int fsize;
- int fr, i, j, n;
- int off = avctx->channels;
- const uint8_t *coff = chan_offset[s->chan_cfg];
-
- len = buf_size;
+ int fr, j, n;
*data_size = 0;
// Discard too short frames
// If only one decoder interleave is not needed
outptr = s->frames == 1 ? out_samples : decoded_buf;
+ avctx->bit_rate = 0;
+
for (fr = 0; fr < s->frames; fr++) {
fsize = AV_RB16(buf) >> 4;
fsize = FFMIN3(fsize, len, MPA_MAX_CODED_FRAME_SIZE);
header = (AV_RB32(buf) & 0x000fffff) | s->syncword; // patch header
- if (ff_mpa_check_header(header) < 0) { // Bad header, discard block
- *data_size = 0;
- return buf_size;
- }
+ if (ff_mpa_check_header(header) < 0) // Bad header, discard block
+ break;
ff_mpegaudio_decode_header(m, header);
out_size += mp_decode_frame(m, outptr, buf, fsize);
if(s->frames > 1) {
n = m->avctx->frame_size*m->nb_channels;
/* interleave output data */
- bp = out_samples + coff[fr];
+ bp = out_samples + s->coff[fr];
if(m->nb_channels == 1) {
for(j = 0; j < n; j++) {
*bp = decoded_buf[j];
- bp += off;
+ bp += avctx->channels;
}
} else {
for(j = 0; j < n; j++) {
bp[0] = decoded_buf[j++];
bp[1] = decoded_buf[j];
- bp += off;
+ bp += avctx->channels;
}
}
}
+ avctx->bit_rate += m->bit_rate;
}
/* update codec info */
avctx->sample_rate = s->mp3decctx[0]->sample_rate;
- avctx->bit_rate = 0;
- for (i = 0; i < s->frames; i++)
- avctx->bit_rate += s->mp3decctx[i]->bit_rate;
*data_size = out_size;
return buf_size;
decode_frame,
CODEC_CAP_PARSE_ONLY,
.flush= flush,
+ .long_name= NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
};
#endif
#ifdef CONFIG_MP3_DECODER
decode_frame,
CODEC_CAP_PARSE_ONLY,
.flush= flush,
+ .long_name= NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
};
#endif
#ifdef CONFIG_MP3ADU_DECODER
decode_frame_adu,
CODEC_CAP_PARSE_ONLY,
.flush= flush,
+ .long_name= NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"),
};
#endif
#ifdef CONFIG_MP3ON4_DECODER
decode_close_mp3on4,
decode_frame_mp3on4,
.flush= flush,
+ .long_name= NULL_IF_CONFIG_SMALL("MP3onMP4"),
};
#endif
projects / ffmpeg / blobdiff