X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fvorbis_enc.c;h=61f78b576f1141483784d014ab21d5e01ee7a71c;hb=96ff02f1b4f382936b9e212a98d80d0b92d5058c;hp=78302aaeab82a5d53f5ae9bd49be78c00076f343;hpb=b5f09d31c21d1e89f7c4693f28046d3b26209da3;p=ffmpeg diff --git a/libavcodec/vorbis_enc.c b/libavcodec/vorbis_enc.c index 78302aaeab8..61f78b576f1 100644 --- a/libavcodec/vorbis_enc.c +++ b/libavcodec/vorbis_enc.c @@ -38,34 +38,34 @@ typedef struct { int nentries; - uint8_t * lens; - uint32_t * codewords; + uint8_t *lens; + uint32_t *codewords; int ndimentions; float min; float delta; int seq_p; int lookup; - int * quantlist; - float * dimentions; - float * pow2; + int *quantlist; + float *dimentions; + float *pow2; } vorbis_enc_codebook; typedef struct { int dim; int subclass; int masterbook; - int * books; + int *books; } vorbis_enc_floor_class; typedef struct { int partitions; - int * partition_to_class; + int *partition_to_class; int nclasses; - vorbis_enc_floor_class * classes; + vorbis_enc_floor_class *classes; int multiplier; int rangebits; int values; - vorbis_floor1_entry * list; + vorbis_floor1_entry *list; } vorbis_enc_floor; typedef struct { @@ -81,12 +81,12 @@ typedef struct { typedef struct { int submaps; - int * mux; - int * floor; - int * residue; + int *mux; + int *floor; + int *residue; int coupling_steps; - int * magnitude; - int * angle; + int *magnitude; + int *angle; } vorbis_enc_mapping; typedef struct { @@ -98,54 +98,60 @@ typedef struct { int channels; int sample_rate; int log2_blocksize[2]; - MDCTContext mdct[2]; - const float * win[2]; + FFTContext mdct[2]; + const float *win[2]; int have_saved; - float * saved; - float * samples; - float * floor; // also used for tmp values for mdct - float * coeffs; // also used for residue after floor + float *saved; + float *samples; + float *floor; // also used for tmp values for mdct + float *coeffs; // also used for residue after floor float quality; int ncodebooks; - vorbis_enc_codebook * codebooks; + vorbis_enc_codebook *codebooks; int nfloors; - vorbis_enc_floor * floors; + vorbis_enc_floor *floors; int nresidues; - vorbis_enc_residue * residues; + vorbis_enc_residue *residues; int nmappings; - vorbis_enc_mapping * mappings; + vorbis_enc_mapping *mappings; int nmodes; - vorbis_enc_mode * modes; + vorbis_enc_mode *modes; int64_t sample_count; } vorbis_enc_context; -static inline void put_codeword(PutBitContext * pb, vorbis_enc_codebook * cb, int entry) { +static inline void put_codeword(PutBitContext *pb, vorbis_enc_codebook *cb, + int entry) +{ assert(entry >= 0); assert(entry < cb->nentries); assert(cb->lens[entry]); put_bits(pb, cb->lens[entry], cb->codewords[entry]); } -static int cb_lookup_vals(int lookup, int dimentions, int entries) { - if (lookup == 1) return ff_vorbis_nth_root(entries, dimentions); - else if (lookup == 2) return dimentions * entries; +static int cb_lookup_vals(int lookup, int dimentions, int entries) +{ + if (lookup == 1) + return ff_vorbis_nth_root(entries, dimentions); + else if (lookup == 2) + return dimentions *entries; return 0; } -static void ready_codebook(vorbis_enc_codebook * cb) { +static void ready_codebook(vorbis_enc_codebook *cb) +{ int i; ff_vorbis_len2vlc(cb->lens, cb->codewords, cb->nentries); - if (!cb->lookup) + if (!cb->lookup) { cb->pow2 = cb->dimentions = NULL; - else { + } else { int vals = cb_lookup_vals(cb->lookup, cb->ndimentions, cb->nentries); cb->dimentions = av_malloc(sizeof(float) * cb->nentries * cb->ndimentions); cb->pow2 = av_mallocz(sizeof(float) * cb->nentries); @@ -163,7 +169,7 @@ static void ready_codebook(vorbis_enc_codebook * cb) { cb->dimentions[i * cb->ndimentions + j] = last + cb->min + cb->quantlist[off] * cb->delta; if (cb->seq_p) last = cb->dimentions[i * cb->ndimentions + j]; - cb->pow2[i] += cb->dimentions[i * cb->ndimentions + j]*cb->dimentions[i * cb->ndimentions + j]; + cb->pow2[i] += cb->dimentions[i * cb->ndimentions + j] * cb->dimentions[i * cb->ndimentions + j]; div *= vals; } cb->pow2[i] /= 2.; @@ -171,7 +177,8 @@ static void ready_codebook(vorbis_enc_codebook * cb) { } } -static void ready_residue(vorbis_enc_residue * rc, vorbis_enc_context * venc) { +static void ready_residue(vorbis_enc_residue *rc, vorbis_enc_context *venc) +{ int i; assert(rc->type == 2); rc->maxes = av_mallocz(sizeof(float[2]) * rc->classifications); @@ -179,15 +186,18 @@ static void ready_residue(vorbis_enc_residue * rc, vorbis_enc_context * venc) { int j; vorbis_enc_codebook * cb; for (j = 0; j < 8; j++) - if (rc->books[i][j] != -1) break; - if (j == 8) continue; // zero + if (rc->books[i][j] != -1) + break; + if (j == 8) // zero + continue; cb = &venc->codebooks[rc->books[i][j]]; assert(cb->ndimentions >= 2); assert(cb->lookup); for (j = 0; j < cb->nentries; j++) { float a; - if (!cb->lens[j]) continue; + if (!cb->lens[j]) + continue; a = fabs(cb->dimentions[j * cb->ndimentions]); if (a > rc->maxes[i][0]) rc->maxes[i][0] = a; @@ -203,33 +213,35 @@ static void ready_residue(vorbis_enc_residue * rc, vorbis_enc_context * venc) { } } -static void create_vorbis_context(vorbis_enc_context * venc, AVCodecContext * avccontext) { - vorbis_enc_floor * fc; - vorbis_enc_residue * rc; - vorbis_enc_mapping * mc; +static void create_vorbis_context(vorbis_enc_context *venc, + AVCodecContext *avccontext) +{ + vorbis_enc_floor *fc; + vorbis_enc_residue *rc; + vorbis_enc_mapping *mc; int i, book; - venc->channels = avccontext->channels; + venc->channels = avccontext->channels; venc->sample_rate = avccontext->sample_rate; venc->log2_blocksize[0] = venc->log2_blocksize[1] = 11; venc->ncodebooks = FF_ARRAY_ELEMS(cvectors); - venc->codebooks = av_malloc(sizeof(vorbis_enc_codebook) * venc->ncodebooks); + venc->codebooks = av_malloc(sizeof(vorbis_enc_codebook) * venc->ncodebooks); // codebook 0..14 - floor1 book, values 0..255 // codebook 15 residue masterbook // codebook 16..29 residue for (book = 0; book < venc->ncodebooks; book++) { - vorbis_enc_codebook * cb = &venc->codebooks[book]; + vorbis_enc_codebook *cb = &venc->codebooks[book]; int vals; cb->ndimentions = cvectors[book].dim; - cb->nentries = cvectors[book].real_len; - cb->min = cvectors[book].min; - cb->delta = cvectors[book].delta; - cb->lookup = cvectors[book].lookup; - cb->seq_p = 0; + cb->nentries = cvectors[book].real_len; + cb->min = cvectors[book].min; + cb->delta = cvectors[book].delta; + cb->lookup = cvectors[book].lookup; + cb->seq_p = 0; - cb->lens = av_malloc(sizeof(uint8_t) * cb->nentries); + cb->lens = av_malloc(sizeof(uint8_t) * cb->nentries); cb->codewords = av_malloc(sizeof(uint32_t) * cb->nentries); memcpy(cb->lens, cvectors[book].clens, cvectors[book].len); memset(cb->lens + cvectors[book].len, 0, cb->nentries - cvectors[book].len); @@ -246,15 +258,15 @@ static void create_vorbis_context(vorbis_enc_context * venc, AVCodecContext * av } venc->nfloors = 1; - venc->floors = av_malloc(sizeof(vorbis_enc_floor) * venc->nfloors); + venc->floors = av_malloc(sizeof(vorbis_enc_floor) * venc->nfloors); // just 1 floor fc = &venc->floors[0]; - fc->partitions = 8; + fc->partitions = 8; fc->partition_to_class = av_malloc(sizeof(int) * fc->partitions); - fc->nclasses = 0; + fc->nclasses = 0; for (i = 0; i < fc->partitions; i++) { - static const int a[] = {0,1,2,2,3,3,4,4}; + static const int a[] = {0, 1, 2, 2, 3, 3, 4, 4}; fc->partition_to_class[i] = a[i]; fc->nclasses = FFMAX(fc->nclasses, fc->partition_to_class[i]); } @@ -263,16 +275,16 @@ static void create_vorbis_context(vorbis_enc_context * venc, AVCodecContext * av for (i = 0; i < fc->nclasses; i++) { vorbis_enc_floor_class * c = &fc->classes[i]; int j, books; - c->dim = floor_classes[i].dim; - c->subclass = floor_classes[i].subclass; + c->dim = floor_classes[i].dim; + c->subclass = floor_classes[i].subclass; c->masterbook = floor_classes[i].masterbook; - books = (1 << c->subclass); - c->books = av_malloc(sizeof(int) * books); + books = (1 << c->subclass); + c->books = av_malloc(sizeof(int) * books); for (j = 0; j < books; j++) c->books[j] = floor_classes[i].nbooks[j]; } fc->multiplier = 2; - fc->rangebits = venc->log2_blocksize[0] - 1; + fc->rangebits = venc->log2_blocksize[0] - 1; fc->values = 2; for (i = 0; i < fc->partitions; i++) @@ -292,17 +304,17 @@ static void create_vorbis_context(vorbis_enc_context * venc, AVCodecContext * av ff_vorbis_ready_floor1_list(fc->list, fc->values); venc->nresidues = 1; - venc->residues = av_malloc(sizeof(vorbis_enc_residue) * venc->nresidues); + venc->residues = av_malloc(sizeof(vorbis_enc_residue) * venc->nresidues); // single residue rc = &venc->residues[0]; - rc->type = 2; - rc->begin = 0; - rc->end = 1600; - rc->partition_size = 32; + rc->type = 2; + rc->begin = 0; + rc->end = 1600; + rc->partition_size = 32; rc->classifications = 10; - rc->classbook = 15; - rc->books = av_malloc(sizeof(*rc->books) * rc->classifications); + rc->classbook = 15; + rc->books = av_malloc(sizeof(*rc->books) * rc->classifications); { static const int8_t a[10][8] = { { -1, -1, -1, -1, -1, -1, -1, -1, }, @@ -321,40 +333,40 @@ static void create_vorbis_context(vorbis_enc_context * venc, AVCodecContext * av ready_residue(rc, venc); venc->nmappings = 1; - venc->mappings = av_malloc(sizeof(vorbis_enc_mapping) * venc->nmappings); + venc->mappings = av_malloc(sizeof(vorbis_enc_mapping) * venc->nmappings); // single mapping mc = &venc->mappings[0]; mc->submaps = 1; - mc->mux = av_malloc(sizeof(int) * venc->channels); + mc->mux = av_malloc(sizeof(int) * venc->channels); for (i = 0; i < venc->channels; i++) mc->mux[i] = 0; - mc->floor = av_malloc(sizeof(int) * mc->submaps); + mc->floor = av_malloc(sizeof(int) * mc->submaps); mc->residue = av_malloc(sizeof(int) * mc->submaps); for (i = 0; i < mc->submaps; i++) { - mc->floor[i] = 0; + mc->floor[i] = 0; mc->residue[i] = 0; } mc->coupling_steps = venc->channels == 2 ? 1 : 0; - mc->magnitude = av_malloc(sizeof(int) * mc->coupling_steps); - mc->angle = av_malloc(sizeof(int) * mc->coupling_steps); + mc->magnitude = av_malloc(sizeof(int) * mc->coupling_steps); + mc->angle = av_malloc(sizeof(int) * mc->coupling_steps); if (mc->coupling_steps) { mc->magnitude[0] = 0; - mc->angle[0] = 1; + mc->angle[0] = 1; } venc->nmodes = 1; - venc->modes = av_malloc(sizeof(vorbis_enc_mode) * venc->nmodes); + venc->modes = av_malloc(sizeof(vorbis_enc_mode) * venc->nmodes); // single mode venc->modes[0].blockflag = 0; - venc->modes[0].mapping = 0; + venc->modes[0].mapping = 0; venc->have_saved = 0; - venc->saved = av_malloc(sizeof(float) * venc->channels * (1 << venc->log2_blocksize[1]) / 2); - venc->samples = av_malloc(sizeof(float) * venc->channels * (1 << venc->log2_blocksize[1])); - venc->floor = av_malloc(sizeof(float) * venc->channels * (1 << venc->log2_blocksize[1]) / 2); - venc->coeffs = av_malloc(sizeof(float) * venc->channels * (1 << venc->log2_blocksize[1]) / 2); + venc->saved = av_malloc(sizeof(float) * venc->channels * (1 << venc->log2_blocksize[1]) / 2); + venc->samples = av_malloc(sizeof(float) * venc->channels * (1 << venc->log2_blocksize[1])); + venc->floor = av_malloc(sizeof(float) * venc->channels * (1 << venc->log2_blocksize[1]) / 2); + venc->coeffs = av_malloc(sizeof(float) * venc->channels * (1 << venc->log2_blocksize[1]) / 2); venc->win[0] = ff_vorbis_vwin[venc->log2_blocksize[0] - 6]; venc->win[1] = ff_vorbis_vwin[venc->log2_blocksize[1] - 6]; @@ -363,17 +375,22 @@ static void create_vorbis_context(vorbis_enc_context * venc, AVCodecContext * av ff_mdct_init(&venc->mdct[1], venc->log2_blocksize[1], 0, 1.0); } -static void put_float(PutBitContext * pb, float f) { +static void put_float(PutBitContext *pb, float f) +{ int exp, mant; uint32_t res = 0; mant = (int)ldexp(frexp(f, &exp), 20); exp += 788 - 20; - if (mant < 0) { res |= (1 << 31); mant = -mant; } + if (mant < 0) { + res |= (1 << 31); + mant = -mant; + } res |= mant | (exp << 21); - put_bits(pb, 32, res); + put_bits32(pb, res); } -static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) { +static void put_codebook_header(PutBitContext *pb, vorbis_enc_codebook *cb) +{ int i; int ordered = 0; @@ -382,7 +399,8 @@ static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) { put_bits(pb, 24, cb->nentries); for (i = 1; i < cb->nentries; i++) - if (cb->lens[i] < cb->lens[i-1]) break; + if (cb->lens[i] < cb->lens[i-1]) + break; if (i == cb->nentries) ordered = 1; @@ -394,7 +412,8 @@ static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) { while (i < cb->nentries) { int j; for (j = 0; j+i < cb->nentries; j++) - if (cb->lens[j+i] != len) break; + if (cb->lens[j+i] != len) + break; put_bits(pb, ilog(cb->nentries - i), j); i += j; len++; @@ -402,20 +421,23 @@ static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) { } else { int sparse = 0; for (i = 0; i < cb->nentries; i++) - if (!cb->lens[i]) break; + if (!cb->lens[i]) + break; if (i != cb->nentries) sparse = 1; put_bits(pb, 1, sparse); for (i = 0; i < cb->nentries; i++) { - if (sparse) put_bits(pb, 1, !!cb->lens[i]); - if (cb->lens[i]) put_bits(pb, 5, cb->lens[i] - 1); + if (sparse) + put_bits(pb, 1, !!cb->lens[i]); + if (cb->lens[i]) + put_bits(pb, 5, cb->lens[i] - 1); } } put_bits(pb, 4, cb->lookup); if (cb->lookup) { - int tmp = cb_lookup_vals(cb->lookup, cb->ndimentions, cb->nentries); + int tmp = cb_lookup_vals(cb->lookup, cb->ndimentions, cb->nentries); int bits = ilog(cb->quantlist[0]); for (i = 1; i < tmp; i++) @@ -432,7 +454,8 @@ static void put_codebook_header(PutBitContext * pb, vorbis_enc_codebook * cb) { } } -static void put_floor_header(PutBitContext * pb, vorbis_enc_floor * fc) { +static void put_floor_header(PutBitContext *pb, vorbis_enc_floor *fc) +{ int i; put_bits(pb, 16, 1); // type, only floor1 is supported @@ -464,7 +487,8 @@ static void put_floor_header(PutBitContext * pb, vorbis_enc_floor * fc) { put_bits(pb, fc->rangebits, fc->list[i].x); } -static void put_residue_header(PutBitContext * pb, vorbis_enc_residue * rc) { +static void put_residue_header(PutBitContext *pb, vorbis_enc_residue *rc) +{ int i; put_bits(pb, 16, rc->type); @@ -495,52 +519,50 @@ static void put_residue_header(PutBitContext * pb, vorbis_enc_residue * rc) { } } -static int put_main_header(vorbis_enc_context * venc, uint8_t ** out) { +static int put_main_header(vorbis_enc_context *venc, uint8_t **out) +{ int i; PutBitContext pb; - uint8_t buffer[50000] = {0}, * p = buffer; + uint8_t buffer[50000] = {0}, *p = buffer; int buffer_len = sizeof buffer; int len, hlens[3]; // identification header init_put_bits(&pb, p, buffer_len); put_bits(&pb, 8, 1); //magic - for (i = 0; "vorbis"[i]; i++) - put_bits(&pb, 8, "vorbis"[i]); - put_bits(&pb, 32, 0); // version - put_bits(&pb, 8, venc->channels); - put_bits(&pb, 32, venc->sample_rate); - put_bits(&pb, 32, 0); // bitrate - put_bits(&pb, 32, 0); // bitrate - put_bits(&pb, 32, 0); // bitrate - put_bits(&pb, 4, venc->log2_blocksize[0]); - put_bits(&pb, 4, venc->log2_blocksize[1]); - put_bits(&pb, 1, 1); // framing + ff_put_string(&pb, "vorbis", 0); + put_bits32(&pb, 0); // version + put_bits(&pb, 8, venc->channels); + put_bits32(&pb, venc->sample_rate); + put_bits32(&pb, 0); // bitrate + put_bits32(&pb, 0); // bitrate + put_bits32(&pb, 0); // bitrate + put_bits(&pb, 4, venc->log2_blocksize[0]); + put_bits(&pb, 4, venc->log2_blocksize[1]); + put_bits(&pb, 1, 1); // framing flush_put_bits(&pb); - hlens[0] = (put_bits_count(&pb) + 7) / 8; + hlens[0] = put_bits_count(&pb) >> 3; buffer_len -= hlens[0]; p += hlens[0]; // comment header init_put_bits(&pb, p, buffer_len); put_bits(&pb, 8, 3); //magic - for (i = 0; "vorbis"[i]; i++) - put_bits(&pb, 8, "vorbis"[i]); - put_bits(&pb, 32, 0); // vendor length TODO - put_bits(&pb, 32, 0); // amount of comments - put_bits(&pb, 1, 1); // framing + ff_put_string(&pb, "vorbis", 0); + put_bits32(&pb, 0); // vendor length TODO + put_bits32(&pb, 0); // amount of comments + put_bits(&pb, 1, 1); // framing flush_put_bits(&pb); - hlens[1] = (put_bits_count(&pb) + 7) / 8; + hlens[1] = put_bits_count(&pb) >> 3; buffer_len -= hlens[1]; p += hlens[1]; // setup header init_put_bits(&pb, p, buffer_len); put_bits(&pb, 8, 5); //magic - for (i = 0; "vorbis"[i]; i++) - put_bits(&pb, 8, "vorbis"[i]); + ff_put_string(&pb, "vorbis", 0); // codebooks put_bits(&pb, 8, venc->ncodebooks - 1); @@ -548,7 +570,7 @@ static int put_main_header(vorbis_enc_context * venc, uint8_t ** out) { put_codebook_header(&pb, &venc->codebooks[i]); // time domain, reserved, zero - put_bits(&pb, 6, 0); + put_bits(&pb, 6, 0); put_bits(&pb, 16, 0); // floors @@ -564,7 +586,7 @@ static int put_main_header(vorbis_enc_context * venc, uint8_t ** out) { // mappings put_bits(&pb, 6, venc->nmappings - 1); for (i = 0; i < venc->nmappings; i++) { - vorbis_enc_mapping * mc = &venc->mappings[i]; + vorbis_enc_mapping *mc = &venc->mappings[i]; int j; put_bits(&pb, 16, 0); // mapping type @@ -606,7 +628,7 @@ static int put_main_header(vorbis_enc_context * venc, uint8_t ** out) { put_bits(&pb, 1, 1); // framing flush_put_bits(&pb); - hlens[2] = (put_bits_count(&pb) + 7) / 8; + hlens[2] = put_bits_count(&pb) >> 3; len = hlens[0] + hlens[1] + hlens[2]; p = *out = av_mallocz(64 + len + len/255); @@ -624,7 +646,8 @@ static int put_main_header(vorbis_enc_context * venc, uint8_t ** out) { return p - *out; } -static float get_floor_average(vorbis_enc_floor * fc, float * coeffs, int i) { +static float get_floor_average(vorbis_enc_floor * fc, float *coeffs, int i) +{ int begin = fc->list[fc->list[FFMAX(i-1, 0)].sort].x; int end = fc->list[fc->list[FFMIN(i+1, fc->values - 1)].sort].x; int j; @@ -635,12 +658,14 @@ static float get_floor_average(vorbis_enc_floor * fc, float * coeffs, int i) { return average / (end - begin); } -static void floor_fit(vorbis_enc_context * venc, vorbis_enc_floor * fc, float * coeffs, uint_fast16_t * posts, int samples) { +static void floor_fit(vorbis_enc_context *venc, vorbis_enc_floor *fc, + float *coeffs, uint_fast16_t *posts, int samples) +{ int range = 255 / fc->multiplier + 1; int i; float tot_average = 0.; float averages[fc->values]; - for (i = 0; i < fc->values; i++){ + for (i = 0; i < fc->values; i++) { averages[i] = get_floor_average(fc, coeffs, i); tot_average += averages[i]; } @@ -648,22 +673,27 @@ static void floor_fit(vorbis_enc_context * venc, vorbis_enc_floor * fc, float * tot_average /= venc->quality; for (i = 0; i < fc->values; i++) { - int position = fc->list[fc->list[i].sort].x; + int position = fc->list[fc->list[i].sort].x; float average = averages[i]; int j; average *= pow(tot_average / average, 0.5) * pow(1.25, position/200.); // MAGIC! for (j = 0; j < range - 1; j++) - if (ff_vorbis_floor1_inverse_db_table[j * fc->multiplier] > average) break; + if (ff_vorbis_floor1_inverse_db_table[j * fc->multiplier] > average) + break; posts[fc->list[i].sort] = j; } } -static int render_point(int x0, int y0, int x1, int y1, int x) { +static int render_point(int x0, int y0, int x1, int y1, int x) +{ return y0 + (x - x0) * (y1 - y0) / (x1 - x0); } -static void floor_encode(vorbis_enc_context * venc, vorbis_enc_floor * fc, PutBitContext * pb, uint_fast16_t * posts, float * floor, int samples) { +static void floor_encode(vorbis_enc_context *venc, vorbis_enc_floor *fc, + PutBitContext *pb, uint_fast16_t *posts, + float *floor, int samples) +{ int range = 255 / fc->multiplier + 1; int coded[fc->values]; // first 2 values are unused int i, counter; @@ -686,8 +716,10 @@ static void floor_encode(vorbis_enc_context * venc, vorbis_enc_floor * fc, PutBi coded[i] = 0; // must be used later as flag! continue; } else { - if (!coded[fc->list[i].low ]) coded[fc->list[i].low ] = -1; - if (!coded[fc->list[i].high]) coded[fc->list[i].high] = -1; + if (!coded[fc->list[i].low ]) + coded[fc->list[i].low ] = -1; + if (!coded[fc->list[i].high]) + coded[fc->list[i].high] = -1; } if (posts[i] > predicted) { if (posts[i] - predicted > room) @@ -716,39 +748,46 @@ static void floor_encode(vorbis_enc_context * venc, vorbis_enc_floor * fc, PutBi if (c->books[l] != -1) maxval = venc->codebooks[c->books[l]].nentries; // coded could be -1, but this still works, cause that is 0 - if (coded[counter + k] < maxval) break; + if (coded[counter + k] < maxval) + break; } assert(l != csub); - cval |= l << cshift; + cval |= l << cshift; cshift += c->subclass; } put_codeword(pb, book, cval); } for (k = 0; k < c->dim; k++) { - int book = c->books[cval & (csub-1)]; + int book = c->books[cval & (csub-1)]; int entry = coded[counter++]; cval >>= c->subclass; - if (book == -1) continue; - if (entry == -1) entry = 0; + if (book == -1) + continue; + if (entry == -1) + entry = 0; put_codeword(pb, &venc->codebooks[book], entry); } } - ff_vorbis_floor1_render_list(fc->list, fc->values, posts, coded, fc->multiplier, floor, samples); + ff_vorbis_floor1_render_list(fc->list, fc->values, posts, coded, + fc->multiplier, floor, samples); } -static float * put_vector(vorbis_enc_codebook * book, PutBitContext * pb, float * num) { +static float *put_vector(vorbis_enc_codebook *book, PutBitContext *pb, + float *num) +{ int i, entry = -1; float distance = FLT_MAX; assert(book->dimentions); for (i = 0; i < book->nentries; i++) { float * vec = book->dimentions + i * book->ndimentions, d = book->pow2[i]; int j; - if (!book->lens[i]) continue; + if (!book->lens[i]) + continue; for (j = 0; j < book->ndimentions; j++) d -= vec[j] * num[j]; if (distance > d) { - entry = i; + entry = i; distance = d; } } @@ -756,11 +795,14 @@ static float * put_vector(vorbis_enc_codebook * book, PutBitContext * pb, float return &book->dimentions[entry * book->ndimentions]; } -static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, PutBitContext * pb, float * coeffs, int samples, int real_ch) { +static void residue_encode(vorbis_enc_context *venc, vorbis_enc_residue *rc, + PutBitContext *pb, float *coeffs, int samples, + int real_ch) +{ int pass, i, j, p, k; - int psize = rc->partition_size; + int psize = rc->partition_size; int partitions = (rc->end - rc->begin) / psize; - int channels = (rc->type == 2) ? 1 : real_ch; + int channels = (rc->type == 2) ? 1 : real_ch; int classes[channels][partitions]; int classwords = venc->codebooks[rc->classbook].ndimentions; @@ -774,9 +816,9 @@ static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, P max2 = FFMAX(max2, fabs(coeffs[samples + k / real_ch])); } - for (i = 0; i < rc->classifications - 1; i++) { - if (max1 < rc->maxes[i][0] && max2 < rc->maxes[i][1]) break; - } + for (i = 0; i < rc->classifications - 1; i++) + if (max1 < rc->maxes[i][0] && max2 < rc->maxes[i][1]) + break; classes[0][p] = i; } @@ -797,15 +839,16 @@ static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, P for (j = 0; j < channels; j++) { int nbook = rc->books[classes[j][p]][pass]; vorbis_enc_codebook * book = &venc->codebooks[nbook]; - float * buf = coeffs + samples*j + rc->begin + p*psize; - if (nbook == -1) continue; + float *buf = coeffs + samples*j + rc->begin + p*psize; + if (nbook == -1) + continue; assert(rc->type == 0 || rc->type == 2); assert(!(psize % book->ndimentions)); if (rc->type == 0) { for (k = 0; k < psize; k += book->ndimentions) { - float * a = put_vector(book, pb, &buf[k]); + float *a = put_vector(book, pb, &buf[k]); int l; for (l = 0; l < book->ndimentions; l++) buf[k + l] -= a[l]; @@ -814,14 +857,14 @@ static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, P int s = rc->begin + p * psize, a1, b1; a1 = (s % real_ch) * samples; b1 = s / real_ch; - s = real_ch * samples; + s = real_ch * samples; for (k = 0; k < psize; k += book->ndimentions) { int dim, a2 = a1, b2 = b1; - float vec[book->ndimentions], * pv = vec; + float vec[book->ndimentions], *pv = vec; for (dim = book->ndimentions; dim--; ) { *pv++ = coeffs[a2 + b2]; if ((a2 += samples) == s) { - a2=0; + a2 = 0; b2++; } } @@ -829,7 +872,7 @@ static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, P for (dim = book->ndimentions; dim--; ) { coeffs[a1 + b1] -= *pv++; if ((a1 += samples) == s) { - a1=0; + a1 = 0; b1++; } } @@ -841,23 +884,26 @@ static void residue_encode(vorbis_enc_context * venc, vorbis_enc_residue * rc, P } } -static int apply_window_and_mdct(vorbis_enc_context * venc, signed short * audio, int samples) { +static int apply_window_and_mdct(vorbis_enc_context *venc, signed short *audio, + int samples) +{ int i, j, channel; const float * win = venc->win[0]; int window_len = 1 << (venc->log2_blocksize[0] - 1); float n = (float)(1 << venc->log2_blocksize[0]) / 4.; // FIXME use dsp - if (!venc->have_saved && !samples) return 0; + if (!venc->have_saved && !samples) + return 0; if (venc->have_saved) { - for (channel = 0; channel < venc->channels; channel++) { - memcpy(venc->samples + channel*window_len*2, venc->saved + channel*window_len, sizeof(float)*window_len); - } + for (channel = 0; channel < venc->channels; channel++) + memcpy(venc->samples + channel * window_len * 2, + venc->saved + channel * window_len, sizeof(float) * window_len); } else { - for (channel = 0; channel < venc->channels; channel++) { - memset(venc->samples + channel*window_len*2, 0, sizeof(float)*window_len); - } + for (channel = 0; channel < venc->channels; channel++) + memset(venc->samples + channel * window_len * 2, 0, + sizeof(float) * window_len); } if (samples) { @@ -868,18 +914,18 @@ static int apply_window_and_mdct(vorbis_enc_context * venc, signed short * audio offset[i] = -audio[j] / 32768. / n * win[window_len - i - 1]; //FIXME find out why the sign has to be fliped } } else { - for (channel = 0; channel < venc->channels; channel++) { - memset(venc->samples + channel*window_len*2 + window_len, 0, sizeof(float)*window_len); - } + for (channel = 0; channel < venc->channels; channel++) + memset(venc->samples + channel * window_len * 2 + window_len, + 0, sizeof(float) * window_len); } - for (channel = 0; channel < venc->channels; channel++) { - ff_mdct_calc(&venc->mdct[0], venc->coeffs + channel*window_len, venc->samples + channel*window_len*2); - } + for (channel = 0; channel < venc->channels; channel++) + ff_mdct_calc(&venc->mdct[0], venc->coeffs + channel * window_len, + venc->samples + channel * window_len * 2); if (samples) { for (channel = 0; channel < venc->channels; channel++) { - float * offset = venc->saved + channel*window_len; + float *offset = venc->saved + channel * window_len; j = channel; for (i = 0; i < samples; i++, j += venc->channels) offset[i] = -audio[j] / 32768. / n * win[i]; //FIXME find out why the sign has to be fliped @@ -891,9 +937,9 @@ static int apply_window_and_mdct(vorbis_enc_context * venc, signed short * audio return 1; } -static av_cold int vorbis_encode_init(AVCodecContext * avccontext) +static av_cold int vorbis_encode_init(AVCodecContext *avccontext) { - vorbis_enc_context * venc = avccontext->priv_data; + vorbis_enc_context *venc = avccontext->priv_data; if (avccontext->channels != 2) { av_log(avccontext, AV_LOG_ERROR, "Current FFmpeg Vorbis encoder only supports 2 channels.\n"); @@ -910,25 +956,28 @@ static av_cold int vorbis_encode_init(AVCodecContext * avccontext) avccontext->extradata_size = put_main_header(venc, (uint8_t**)&avccontext->extradata); - avccontext->frame_size = 1 << (venc->log2_blocksize[0] - 1); + avccontext->frame_size = 1 << (venc->log2_blocksize[0] - 1); - avccontext->coded_frame = avcodec_alloc_frame(); + avccontext->coded_frame = avcodec_alloc_frame(); avccontext->coded_frame->key_frame = 1; return 0; } -static int vorbis_encode_frame(AVCodecContext * avccontext, unsigned char * packets, int buf_size, void *data) +static int vorbis_encode_frame(AVCodecContext *avccontext, + unsigned char *packets, + int buf_size, void *data) { - vorbis_enc_context * venc = avccontext->priv_data; - signed short * audio = data; + vorbis_enc_context *venc = avccontext->priv_data; + signed short *audio = data; int samples = data ? avccontext->frame_size : 0; - vorbis_enc_mode * mode; - vorbis_enc_mapping * mapping; + vorbis_enc_mode *mode; + vorbis_enc_mapping *mapping; PutBitContext pb; int i; - if (!apply_window_and_mdct(venc, audio, samples)) return 0; + if (!apply_window_and_mdct(venc, audio, samples)) + return 0; samples = 1 << (venc->log2_blocksize[0] - 1); init_put_bits(&pb, packets, buf_size); @@ -937,7 +986,7 @@ static int vorbis_encode_frame(AVCodecContext * avccontext, unsigned char * pack put_bits(&pb, ilog(venc->nmodes - 1), 0); // 0 bits, the mode - mode = &venc->modes[0]; + mode = &venc->modes[0]; mapping = &venc->mappings[mode->mapping]; if (mode->blockflag) { put_bits(&pb, 1, 0); @@ -945,40 +994,42 @@ static int vorbis_encode_frame(AVCodecContext * avccontext, unsigned char * pack } for (i = 0; i < venc->channels; i++) { - vorbis_enc_floor * fc = &venc->floors[mapping->floor[mapping->mux[i]]]; + vorbis_enc_floor *fc = &venc->floors[mapping->floor[mapping->mux[i]]]; uint_fast16_t posts[fc->values]; floor_fit(venc, fc, &venc->coeffs[i * samples], posts, samples); floor_encode(venc, fc, &pb, posts, &venc->floor[i * samples], samples); } - for (i = 0; i < venc->channels * samples; i++) { + for (i = 0; i < venc->channels * samples; i++) venc->coeffs[i] /= venc->floor[i]; - } for (i = 0; i < mapping->coupling_steps; i++) { - float * mag = venc->coeffs + mapping->magnitude[i] * samples; - float * ang = venc->coeffs + mapping->angle[i] * samples; + float *mag = venc->coeffs + mapping->magnitude[i] * samples; + float *ang = venc->coeffs + mapping->angle[i] * samples; int j; for (j = 0; j < samples; j++) { float a = ang[j]; ang[j] -= mag[j]; - if (mag[j] > 0) ang[j] = -ang[j]; - if (ang[j] < 0) mag[j] = a; + if (mag[j] > 0) + ang[j] = -ang[j]; + if (ang[j] < 0) + mag[j] = a; } } - residue_encode(venc, &venc->residues[mapping->residue[mapping->mux[0]]], &pb, venc->coeffs, samples, venc->channels); + residue_encode(venc, &venc->residues[mapping->residue[mapping->mux[0]]], + &pb, venc->coeffs, samples, venc->channels); avccontext->coded_frame->pts = venc->sample_count; venc->sample_count += avccontext->frame_size; flush_put_bits(&pb); - return (put_bits_count(&pb) + 7) / 8; + return put_bits_count(&pb) >> 3; } -static av_cold int vorbis_encode_close(AVCodecContext * avccontext) +static av_cold int vorbis_encode_close(AVCodecContext *avccontext) { - vorbis_enc_context * venc = avccontext->priv_data; + vorbis_enc_context *venc = avccontext->priv_data; int i; if (venc->codebooks)