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author | Gabriel Dume <gabriel.ddx84@gmail.com> | 2014-09-02 15:28:50 -0400 |
---|---|---|
committer | Diego Biurrun <diego@biurrun.de> | 2014-09-03 03:09:08 -0700 |
commit | d2a4e4b9cc9a0c2661e1c1d6f6b51babac2cec1b (patch) | |
tree | 3dd633befa49f251616f3ae956862ea683b318fc /libavcodec/wmadec.c | |
parent | c487972ed0e1eaebdbe4a13cdd191e119be0b19c (diff) | |
download | ffmpeg-d2a4e4b9cc9a0c2661e1c1d6f6b51babac2cec1b.tar.gz |
wma: K&R formatting cosmetics
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat (limited to 'libavcodec/wmadec.c')
-rw-r--r-- | libavcodec/wmadec.c | 386 |
1 files changed, 193 insertions, 193 deletions
diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c index 2dd5898d76..2141e388c9 100644 --- a/libavcodec/wmadec.c +++ b/libavcodec/wmadec.c @@ -34,6 +34,7 @@ */ #include "libavutil/attributes.h" + #include "avcodec.h" #include "internal.h" #include "wma.h" @@ -42,20 +43,21 @@ #include <assert.h> #define EXPVLCBITS 8 -#define EXPMAX ((19+EXPVLCBITS-1)/EXPVLCBITS) +#define EXPMAX ((19 + EXPVLCBITS - 1) / EXPVLCBITS) #define HGAINVLCBITS 9 -#define HGAINMAX ((13+HGAINVLCBITS-1)/HGAINVLCBITS) +#define HGAINMAX ((13 + HGAINVLCBITS - 1) / HGAINVLCBITS) static void wma_lsp_to_curve_init(WMACodecContext *s, int frame_len); #ifdef TRACE -static void dump_floats(WMACodecContext *s, const char *name, int prec, const float *tab, int n) +static void dump_floats(WMACodecContext *s, const char *name, + int prec, const float *tab, int n) { int i; tprintf(s->avctx, "%s[%d]:\n", name, n); - for(i=0;i<n;i++) { + for (i = 0; i < n; i++) { if ((i & 7) == 0) tprintf(s->avctx, "%4d: ", i); tprintf(s->avctx, " %8.*f", prec, tab[i]); @@ -65,9 +67,9 @@ static void dump_floats(WMACodecContext *s, const char *name, int prec, const fl if ((i & 7) != 0) tprintf(s->avctx, "\n"); } -#endif +#endif /* TRACE */ -static av_cold int wma_decode_init(AVCodecContext * avctx) +static av_cold int wma_decode_init(AVCodecContext *avctx) { WMACodecContext *s = avctx->priv_data; int i, flags2; @@ -81,23 +83,22 @@ static av_cold int wma_decode_init(AVCodecContext * avctx) s->avctx = avctx; /* extract flag infos */ - flags2 = 0; + flags2 = 0; extradata = avctx->extradata; - if (avctx->codec->id == AV_CODEC_ID_WMAV1 && avctx->extradata_size >= 4) { - flags2 = AV_RL16(extradata+2); - } else if (avctx->codec->id == AV_CODEC_ID_WMAV2 && avctx->extradata_size >= 6) { - flags2 = AV_RL16(extradata+4); - } + if (avctx->codec->id == AV_CODEC_ID_WMAV1 && avctx->extradata_size >= 4) + flags2 = AV_RL16(extradata + 2); + else if (avctx->codec->id == AV_CODEC_ID_WMAV2 && avctx->extradata_size >= 6) + flags2 = AV_RL16(extradata + 4); - s->use_exp_vlc = flags2 & 0x0001; - s->use_bit_reservoir = flags2 & 0x0002; + s->use_exp_vlc = flags2 & 0x0001; + s->use_bit_reservoir = flags2 & 0x0002; s->use_variable_block_len = flags2 & 0x0004; - if(ff_wma_init(avctx, flags2)<0) + if (ff_wma_init(avctx, flags2) < 0) return -1; /* init MDCT */ - for(i = 0; i < s->nb_block_sizes; i++) + for (i = 0; i < s->nb_block_sizes; i++) ff_mdct_init(&s->mdct_ctx[i], s->frame_len_bits - i + 1, 1, 1.0 / 32768.0); if (s->use_noise_coding) { @@ -106,13 +107,12 @@ static av_cold int wma_decode_init(AVCodecContext * avctx) ff_wma_hgain_huffcodes, 2, 2, 0); } - if (s->use_exp_vlc) { - init_vlc(&s->exp_vlc, EXPVLCBITS, sizeof(ff_aac_scalefactor_bits), //FIXME move out of context + if (s->use_exp_vlc) + init_vlc(&s->exp_vlc, EXPVLCBITS, sizeof(ff_aac_scalefactor_bits), // FIXME move out of context ff_aac_scalefactor_bits, 1, 1, ff_aac_scalefactor_code, 4, 4, 0); - } else { + else wma_lsp_to_curve_init(s, s->frame_len); - } avctx->sample_fmt = AV_SAMPLE_FMT_FLTP; @@ -135,12 +135,12 @@ static inline float pow_m1_4(WMACodecContext *s, float x) float a, b; u.f = x; - e = u.v >> 23; - m = (u.v >> (23 - LSP_POW_BITS)) & ((1 << LSP_POW_BITS) - 1); + e = u.v >> 23; + m = (u.v >> (23 - LSP_POW_BITS)) & ((1 << LSP_POW_BITS) - 1); /* build interpolation scale: 1 <= t < 2. */ t.v = ((u.v << LSP_POW_BITS) & ((1 << 23) - 1)) | (127 << 23); - a = s->lsp_pow_m_table1[m]; - b = s->lsp_pow_m_table2[m]; + a = s->lsp_pow_m_table1[m]; + b = s->lsp_pow_m_table2[m]; return s->lsp_pow_e_table[e] * (a + b * t.f); } @@ -150,25 +150,25 @@ static av_cold void wma_lsp_to_curve_init(WMACodecContext *s, int frame_len) int i, e, m; wdel = M_PI / frame_len; - for(i=0;i<frame_len;i++) + for (i = 0; i < frame_len; i++) s->lsp_cos_table[i] = 2.0f * cos(wdel * i); /* tables for x^-0.25 computation */ - for(i=0;i<256;i++) { - e = i - 126; + for (i = 0; i < 256; i++) { + e = i - 126; s->lsp_pow_e_table[i] = pow(2.0, e * -0.25); } /* NOTE: these two tables are needed to avoid two operations in - pow_m1_4 */ + * pow_m1_4 */ b = 1.0; - for(i=(1 << LSP_POW_BITS) - 1;i>=0;i--) { - m = (1 << LSP_POW_BITS) + i; - a = (float)m * (0.5 / (1 << LSP_POW_BITS)); - a = pow(a, -0.25); + for (i = (1 << LSP_POW_BITS) - 1; i >= 0; i--) { + m = (1 << LSP_POW_BITS) + i; + a = (float) m * (0.5 / (1 << LSP_POW_BITS)); + a = pow(a, -0.25); s->lsp_pow_m_table1[i] = 2 * a - b; s->lsp_pow_m_table2[i] = b - a; - b = a; + b = a; } } @@ -176,26 +176,25 @@ static av_cold void wma_lsp_to_curve_init(WMACodecContext *s, int frame_len) * NOTE: We use the same code as Vorbis here * @todo optimize it further with SSE/3Dnow */ -static void wma_lsp_to_curve(WMACodecContext *s, - float *out, float *val_max_ptr, +static void wma_lsp_to_curve(WMACodecContext *s, float *out, float *val_max_ptr, int n, float *lsp) { int i, j; float p, q, w, v, val_max; val_max = 0; - for(i=0;i<n;i++) { + for (i = 0; i < n; i++) { p = 0.5f; q = 0.5f; w = s->lsp_cos_table[i]; - for(j=1;j<NB_LSP_COEFS;j+=2){ + for (j = 1; j < NB_LSP_COEFS; j += 2) { q *= w - lsp[j - 1]; p *= w - lsp[j]; } p *= p * (2.0f - w); q *= q * (2.0f + w); - v = p + q; - v = pow_m1_4(s, v); + v = p + q; + v = pow_m1_4(s, v); if (v > val_max) val_max = v; out[i] = v; @@ -211,7 +210,7 @@ static void decode_exp_lsp(WMACodecContext *s, int ch) float lsp_coefs[NB_LSP_COEFS]; int val, i; - for(i = 0; i < NB_LSP_COEFS; i++) { + for (i = 0; i < NB_LSP_COEFS; i++) { if (i == 0 || i >= 8) val = get_bits(&s->gb, 3); else @@ -315,41 +314,41 @@ static int decode_exp_vlc(WMACodecContext *s, int ch) float v, max_scale; uint32_t *q, *q_end, iv; const float *ptab = pow_tab + 60; - const uint32_t *iptab = (const uint32_t*)ptab; + const uint32_t *iptab = (const uint32_t *) ptab; - ptr = s->exponent_bands[s->frame_len_bits - s->block_len_bits]; - q = (uint32_t *)s->exponents[ch]; - q_end = q + s->block_len; + ptr = s->exponent_bands[s->frame_len_bits - s->block_len_bits]; + q = (uint32_t *) s->exponents[ch]; + q_end = q + s->block_len; max_scale = 0; if (s->version == 1) { - last_exp = get_bits(&s->gb, 5) + 10; - v = ptab[last_exp]; - iv = iptab[last_exp]; + last_exp = get_bits(&s->gb, 5) + 10; + v = ptab[last_exp]; + iv = iptab[last_exp]; max_scale = v; - n = *ptr++; + n = *ptr++; switch (n & 3) do { case 0: *q++ = iv; case 3: *q++ = iv; case 2: *q++ = iv; case 1: *q++ = iv; } while ((n -= 4) > 0); - }else + } else last_exp = 36; while (q < q_end) { code = get_vlc2(&s->gb, s->exp_vlc.table, EXPVLCBITS, EXPMAX); - if (code < 0){ + if (code < 0) { av_log(s->avctx, AV_LOG_ERROR, "Exponent vlc invalid\n"); return -1; } /* NOTE: this offset is the same as MPEG4 AAC ! */ last_exp += code - 60; - if ((unsigned)last_exp + 60 >= FF_ARRAY_ELEMS(pow_tab)) { + if ((unsigned) last_exp + 60 >= FF_ARRAY_ELEMS(pow_tab)) { av_log(s->avctx, AV_LOG_ERROR, "Exponent out of range: %d\n", last_exp); return -1; } - v = ptab[last_exp]; + v = ptab[last_exp]; iv = iptab[last_exp]; if (v > max_scale) max_scale = v; @@ -365,7 +364,6 @@ static int decode_exp_vlc(WMACodecContext *s, int ch) return 0; } - /** * Apply MDCT window and add into output. * @@ -380,46 +378,44 @@ static void wma_window(WMACodecContext *s, float *out) /* left part */ if (s->block_len_bits <= s->prev_block_len_bits) { block_len = s->block_len; - bsize = s->frame_len_bits - s->block_len_bits; + bsize = s->frame_len_bits - s->block_len_bits; s->fdsp.vector_fmul_add(out, in, s->windows[bsize], out, block_len); - } else { block_len = 1 << s->prev_block_len_bits; - n = (s->block_len - block_len) / 2; - bsize = s->frame_len_bits - s->prev_block_len_bits; + n = (s->block_len - block_len) / 2; + bsize = s->frame_len_bits - s->prev_block_len_bits; - s->fdsp.vector_fmul_add(out+n, in+n, s->windows[bsize], - out+n, block_len); + s->fdsp.vector_fmul_add(out + n, in + n, s->windows[bsize], + out + n, block_len); - memcpy(out+n+block_len, in+n+block_len, n*sizeof(float)); + memcpy(out + n + block_len, in + n + block_len, n * sizeof(float)); } out += s->block_len; - in += s->block_len; + in += s->block_len; /* right part */ if (s->block_len_bits <= s->next_block_len_bits) { block_len = s->block_len; - bsize = s->frame_len_bits - s->block_len_bits; + bsize = s->frame_len_bits - s->block_len_bits; s->fdsp.vector_fmul_reverse(out, in, s->windows[bsize], block_len); - } else { block_len = 1 << s->next_block_len_bits; - n = (s->block_len - block_len) / 2; - bsize = s->frame_len_bits - s->next_block_len_bits; + n = (s->block_len - block_len) / 2; + bsize = s->frame_len_bits - s->next_block_len_bits; - memcpy(out, in, n*sizeof(float)); + memcpy(out, in, n * sizeof(float)); - s->fdsp.vector_fmul_reverse(out+n, in+n, s->windows[bsize], block_len); + s->fdsp.vector_fmul_reverse(out + n, in + n, s->windows[bsize], + block_len); - memset(out+n+block_len, 0, n*sizeof(float)); + memset(out + n + block_len, 0, n * sizeof(float)); } } - /** * @return 0 if OK. 1 if last block of frame. return -1 if * unrecorrable error. @@ -433,8 +429,9 @@ static int wma_decode_block(WMACodecContext *s) FFTContext *mdct; #ifdef TRACE - tprintf(s->avctx, "***decode_block: %d:%d\n", s->frame_count - 1, s->block_num); -#endif + tprintf(s->avctx, "***decode_block: %d:%d\n", + s->frame_count - 1, s->block_num); +#endif /* TRACE */ /* compute current block length */ if (s->use_variable_block_len) { @@ -442,26 +439,32 @@ static int wma_decode_block(WMACodecContext *s) if (s->reset_block_lengths) { s->reset_block_lengths = 0; - v = get_bits(&s->gb, n); - if (v >= s->nb_block_sizes){ - av_log(s->avctx, AV_LOG_ERROR, "prev_block_len_bits %d out of range\n", s->frame_len_bits - v); + v = get_bits(&s->gb, n); + if (v >= s->nb_block_sizes) { + av_log(s->avctx, AV_LOG_ERROR, + "prev_block_len_bits %d out of range\n", + s->frame_len_bits - v); return -1; } s->prev_block_len_bits = s->frame_len_bits - v; - v = get_bits(&s->gb, n); - if (v >= s->nb_block_sizes){ - av_log(s->avctx, AV_LOG_ERROR, "block_len_bits %d out of range\n", s->frame_len_bits - v); + v = get_bits(&s->gb, n); + if (v >= s->nb_block_sizes) { + av_log(s->avctx, AV_LOG_ERROR, + "block_len_bits %d out of range\n", + s->frame_len_bits - v); return -1; } s->block_len_bits = s->frame_len_bits - v; } else { /* update block lengths */ s->prev_block_len_bits = s->block_len_bits; - s->block_len_bits = s->next_block_len_bits; + s->block_len_bits = s->next_block_len_bits; } v = get_bits(&s->gb, n); - if (v >= s->nb_block_sizes){ - av_log(s->avctx, AV_LOG_ERROR, "next_block_len_bits %d out of range\n", s->frame_len_bits - v); + if (v >= s->nb_block_sizes) { + av_log(s->avctx, AV_LOG_ERROR, + "next_block_len_bits %d out of range\n", + s->frame_len_bits - v); return -1; } s->next_block_len_bits = s->frame_len_bits - v; @@ -469,24 +472,23 @@ static int wma_decode_block(WMACodecContext *s) /* fixed block len */ s->next_block_len_bits = s->frame_len_bits; s->prev_block_len_bits = s->frame_len_bits; - s->block_len_bits = s->frame_len_bits; + s->block_len_bits = s->frame_len_bits; } /* now check if the block length is coherent with the frame length */ s->block_len = 1 << s->block_len_bits; - if ((s->block_pos + s->block_len) > s->frame_len){ + if ((s->block_pos + s->block_len) > s->frame_len) { av_log(s->avctx, AV_LOG_ERROR, "frame_len overflow\n"); return -1; } - if (s->avctx->channels == 2) { + if (s->avctx->channels == 2) s->ms_stereo = get_bits1(&s->gb); - } v = 0; - for(ch = 0; ch < s->avctx->channels; ch++) { - a = get_bits1(&s->gb); + for (ch = 0; ch < s->avctx->channels; ch++) { + a = get_bits1(&s->gb); s->channel_coded[ch] = a; - v |= a; + v |= a; } bsize = s->frame_len_bits - s->block_len_bits; @@ -497,31 +499,30 @@ static int wma_decode_block(WMACodecContext *s) goto next; /* read total gain and extract corresponding number of bits for - coef escape coding */ + * coef escape coding */ total_gain = 1; - for(;;) { - a = get_bits(&s->gb, 7); + for (;;) { + a = get_bits(&s->gb, 7); total_gain += a; if (a != 127) break; } - coef_nb_bits= ff_wma_total_gain_to_bits(total_gain); + coef_nb_bits = ff_wma_total_gain_to_bits(total_gain); /* compute number of coefficients */ n = s->coefs_end[bsize] - s->coefs_start; - for(ch = 0; ch < s->avctx->channels; ch++) + for (ch = 0; ch < s->avctx->channels; ch++) nb_coefs[ch] = n; /* complex coding */ if (s->use_noise_coding) { - - for(ch = 0; ch < s->avctx->channels; ch++) { + for (ch = 0; ch < s->avctx->channels; ch++) { if (s->channel_coded[ch]) { int i, n, a; n = s->exponent_high_sizes[bsize]; - for(i=0;i<n;i++) { - a = get_bits1(&s->gb); + for (i = 0; i < n; i++) { + a = get_bits1(&s->gb); s->high_band_coded[ch][i] = a; /* if noise coding, the coefficients are not transmitted */ if (a) @@ -529,20 +530,22 @@ static int wma_decode_block(WMACodecContext *s) } } } - for(ch = 0; ch < s->avctx->channels; ch++) { + for (ch = 0; ch < s->avctx->channels; ch++) { if (s->channel_coded[ch]) { int i, n, val, code; - n = s->exponent_high_sizes[bsize]; - val = (int)0x80000000; - for(i=0;i<n;i++) { + n = s->exponent_high_sizes[bsize]; + val = (int) 0x80000000; + for (i = 0; i < n; i++) { if (s->high_band_coded[ch][i]) { - if (val == (int)0x80000000) { + if (val == (int) 0x80000000) { val = get_bits(&s->gb, 7) - 19; } else { - code = get_vlc2(&s->gb, s->hgain_vlc.table, HGAINVLCBITS, HGAINMAX); - if (code < 0){ - av_log(s->avctx, AV_LOG_ERROR, "hgain vlc invalid\n"); + code = get_vlc2(&s->gb, s->hgain_vlc.table, + HGAINVLCBITS, HGAINMAX); + if (code < 0) { + av_log(s->avctx, AV_LOG_ERROR, + "hgain vlc invalid\n"); return -1; } val += code - 18; @@ -555,9 +558,8 @@ static int wma_decode_block(WMACodecContext *s) } /* exponents can be reused in short blocks. */ - if ((s->block_len_bits == s->frame_len_bits) || - get_bits1(&s->gb)) { - for(ch = 0; ch < s->avctx->channels; ch++) { + if ((s->block_len_bits == s->frame_len_bits) || get_bits1(&s->gb)) { + for (ch = 0; ch < s->avctx->channels; ch++) { if (s->channel_coded[ch]) { if (s->use_exp_vlc) { if (decode_exp_vlc(s, ch) < 0) @@ -574,29 +576,27 @@ static int wma_decode_block(WMACodecContext *s) for (ch = 0; ch < s->avctx->channels; ch++) { if (s->channel_coded[ch]) { int tindex; - WMACoef* ptr = &s->coefs1[ch][0]; + WMACoef *ptr = &s->coefs1[ch][0]; /* special VLC tables are used for ms stereo because - there is potentially less energy there */ + * there is potentially less energy there */ tindex = (ch == 1 && s->ms_stereo); memset(ptr, 0, s->block_len * sizeof(WMACoef)); ff_wma_run_level_decode(s->avctx, &s->gb, &s->coef_vlc[tindex], - s->level_table[tindex], s->run_table[tindex], - 0, ptr, 0, nb_coefs[ch], - s->block_len, s->frame_len_bits, coef_nb_bits); + s->level_table[tindex], s->run_table[tindex], + 0, ptr, 0, nb_coefs[ch], + s->block_len, s->frame_len_bits, coef_nb_bits); } - if (s->version == 1 && s->avctx->channels >= 2) { + if (s->version == 1 && s->avctx->channels >= 2) align_get_bits(&s->gb); - } } /* normalize */ { int n4 = s->block_len / 2; - mdct_norm = 1.0 / (float)n4; - if (s->version == 1) { + mdct_norm = 1.0 / (float) n4; + if (s->version == 1) mdct_norm *= sqrt(n4); - } } /* finally compute the MDCT coefficients */ @@ -607,97 +607,94 @@ static int wma_decode_block(WMACodecContext *s) int i, j, n, n1, last_high_band, esize; float exp_power[HIGH_BAND_MAX_SIZE]; - coefs1 = s->coefs1[ch]; + coefs1 = s->coefs1[ch]; exponents = s->exponents[ch]; - esize = s->exponents_bsize[ch]; - mult = pow(10, total_gain * 0.05) / s->max_exponent[ch]; - mult *= mdct_norm; - coefs = s->coefs[ch]; + esize = s->exponents_bsize[ch]; + mult = pow(10, total_gain * 0.05) / s->max_exponent[ch]; + mult *= mdct_norm; + coefs = s->coefs[ch]; if (s->use_noise_coding) { mult1 = mult; /* very low freqs : noise */ - for(i = 0;i < s->coefs_start; i++) { + for (i = 0; i < s->coefs_start; i++) { *coefs++ = s->noise_table[s->noise_index] * - exponents[i<<bsize>>esize] * mult1; - s->noise_index = (s->noise_index + 1) & (NOISE_TAB_SIZE - 1); + exponents[i << bsize >> esize] * mult1; + s->noise_index = (s->noise_index + 1) & + (NOISE_TAB_SIZE - 1); } n1 = s->exponent_high_sizes[bsize]; /* compute power of high bands */ exponents = s->exponents[ch] + - (s->high_band_start[bsize]<<bsize>>esize); + (s->high_band_start[bsize] << bsize >> esize); last_high_band = 0; /* avoid warning */ - for(j=0;j<n1;j++) { + for (j = 0; j < n1; j++) { n = s->exponent_high_bands[s->frame_len_bits - - s->block_len_bits][j]; + s->block_len_bits][j]; if (s->high_band_coded[ch][j]) { float e2, v; e2 = 0; - for(i = 0;i < n; i++) { - v = exponents[i<<bsize>>esize]; + for (i = 0; i < n; i++) { + v = exponents[i << bsize >> esize]; e2 += v * v; } - exp_power[j] = e2 / n; + exp_power[j] = e2 / n; last_high_band = j; tprintf(s->avctx, "%d: power=%f (%d)\n", j, exp_power[j], n); } - exponents += n<<bsize>>esize; + exponents += n << bsize >> esize; } /* main freqs and high freqs */ - exponents = s->exponents[ch] + (s->coefs_start<<bsize>>esize); - for(j=-1;j<n1;j++) { - if (j < 0) { - n = s->high_band_start[bsize] - - s->coefs_start; - } else { + exponents = s->exponents[ch] + (s->coefs_start << bsize >> esize); + for (j = -1; j < n1; j++) { + if (j < 0) + n = s->high_band_start[bsize] - s->coefs_start; + else n = s->exponent_high_bands[s->frame_len_bits - - s->block_len_bits][j]; - } + s->block_len_bits][j]; if (j >= 0 && s->high_band_coded[ch][j]) { /* use noise with specified power */ mult1 = sqrt(exp_power[j] / exp_power[last_high_band]); /* XXX: use a table */ - mult1 = mult1 * pow(10, s->high_band_values[ch][j] * 0.05); - mult1 = mult1 / (s->max_exponent[ch] * s->noise_mult); + mult1 = mult1 * pow(10, s->high_band_values[ch][j] * 0.05); + mult1 = mult1 / (s->max_exponent[ch] * s->noise_mult); mult1 *= mdct_norm; - for(i = 0;i < n; i++) { - noise = s->noise_table[s->noise_index]; + for (i = 0; i < n; i++) { + noise = s->noise_table[s->noise_index]; s->noise_index = (s->noise_index + 1) & (NOISE_TAB_SIZE - 1); - *coefs++ = noise * - exponents[i<<bsize>>esize] * mult1; + *coefs++ = noise * exponents[i << bsize >> esize] * mult1; } - exponents += n<<bsize>>esize; + exponents += n << bsize >> esize; } else { /* coded values + small noise */ - for(i = 0;i < n; i++) { - noise = s->noise_table[s->noise_index]; + for (i = 0; i < n; i++) { + noise = s->noise_table[s->noise_index]; s->noise_index = (s->noise_index + 1) & (NOISE_TAB_SIZE - 1); - *coefs++ = ((*coefs1++) + noise) * - exponents[i<<bsize>>esize] * mult; + *coefs++ = ((*coefs1++) + noise) * + exponents[i << bsize >> esize] * mult; } - exponents += n<<bsize>>esize; + exponents += n << bsize >> esize; } } /* very high freqs : noise */ - n = s->block_len - s->coefs_end[bsize]; - mult1 = mult * exponents[((-1<<bsize))>>esize]; - for(i = 0; i < n; i++) { - *coefs++ = s->noise_table[s->noise_index] * mult1; + n = s->block_len - s->coefs_end[bsize]; + mult1 = mult * exponents[((-1 << bsize)) >> esize]; + for (i = 0; i < n; i++) { + *coefs++ = s->noise_table[s->noise_index] * mult1; s->noise_index = (s->noise_index + 1) & (NOISE_TAB_SIZE - 1); } } else { /* XXX: optimize more */ - for(i = 0;i < s->coefs_start; i++) + for (i = 0; i < s->coefs_start; i++) *coefs++ = 0.0; n = nb_coefs[ch]; - for(i = 0;i < n; i++) { - *coefs++ = coefs1[i] * exponents[i<<bsize>>esize] * mult; - } + for (i = 0; i < n; i++) + *coefs++ = coefs1[i] * exponents[i << bsize >> esize] * mult; n = s->block_len - s->coefs_end[bsize]; - for(i = 0;i < n; i++) + for (i = 0; i < n; i++) *coefs++ = 0.0; } } @@ -710,12 +707,12 @@ static int wma_decode_block(WMACodecContext *s) dump_floats(s, "coefs", 1, s->coefs[ch], s->block_len); } } -#endif +#endif /* TRACE */ if (s->ms_stereo && s->channel_coded[1]) { /* nominal case for ms stereo: we do it before mdct */ /* no need to optimize this case because it should almost - never happen */ + * never happen */ if (!s->channel_coded[0]) { tprintf(s->avctx, "rare ms-stereo case happened\n"); memset(s->coefs[0], 0, sizeof(float) * s->block_len); @@ -732,9 +729,9 @@ next: int n4, index; n4 = s->block_len / 2; - if(s->channel_coded[ch]){ + if (s->channel_coded[ch]) mdct->imdct_calc(mdct, s->output, s->coefs[ch]); - }else if(!(s->ms_stereo && ch==1)) + else if (!(s->ms_stereo && ch == 1)) memset(s->output, 0, sizeof(s->output)); /* multiply by the window and add in the frame */ @@ -758,13 +755,14 @@ static int wma_decode_frame(WMACodecContext *s, float **samples, int ret, ch; #ifdef TRACE - tprintf(s->avctx, "***decode_frame: %d size=%d\n", s->frame_count++, s->frame_len); -#endif + tprintf(s->avctx, "***decode_frame: %d size=%d\n", + s->frame_count++, s->frame_len); +#endif /* TRACE */ /* read each block */ s->block_num = 0; s->block_pos = 0; - for(;;) { + for (;;) { ret = wma_decode_block(s); if (ret < 0) return -1; @@ -781,8 +779,9 @@ static int wma_decode_frame(WMACodecContext *s, float **samples, s->frame_len * sizeof(*s->frame_out[ch])); #ifdef TRACE - dump_floats(s, "samples", 6, samples[ch] + samples_offset, s->frame_len); -#endif + dump_floats(s, "samples", 6, samples[ch] + samples_offset, + s->frame_len); +#endif /* TRACE */ } return 0; @@ -791,9 +790,9 @@ static int wma_decode_frame(WMACodecContext *s, float **samples, static int wma_decode_superframe(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt) { - AVFrame *frame = data; + AVFrame *frame = data; const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; + int buf_size = avpkt->size; WMACodecContext *s = avctx->priv_data; int nb_frames, bit_offset, i, pos, len, ret; uint8_t *q; @@ -802,7 +801,7 @@ static int wma_decode_superframe(AVCodecContext *avctx, void *data, tprintf(avctx, "***decode_superframe:\n"); - if(buf_size==0){ + if (buf_size == 0) { s->last_superframe_len = 0; return 0; } @@ -814,15 +813,14 @@ static int wma_decode_superframe(AVCodecContext *avctx, void *data, } buf_size = avctx->block_align; - init_get_bits(&s->gb, buf, buf_size*8); + init_get_bits(&s->gb, buf, buf_size * 8); if (s->use_bit_reservoir) { /* read super frame header */ skip_bits(&s->gb, 4); /* super frame index */ nb_frames = get_bits(&s->gb, 4) - (s->last_superframe_len <= 0); - } else { + } else nb_frames = 1; - } /* get output buffer */ frame->nb_samples = nb_frames * s->frame_len; @@ -830,7 +828,7 @@ static int wma_decode_superframe(AVCodecContext *avctx, void *data, av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); return ret; } - samples = (float **)frame->extended_data; + samples = (float **) frame->extended_data; samples_offset = 0; if (s->use_bit_reservoir) { @@ -847,24 +845,24 @@ static int wma_decode_superframe(AVCodecContext *avctx, void *data, if ((s->last_superframe_len + ((bit_offset + 7) >> 3)) > MAX_CODED_SUPERFRAME_SIZE) goto fail; - q = s->last_superframe + s->last_superframe_len; + q = s->last_superframe + s->last_superframe_len; len = bit_offset; while (len > 7) { - *q++ = (get_bits)(&s->gb, 8); + *q++ = (get_bits) (&s->gb, 8); len -= 8; } - if (len > 0) { - *q++ = (get_bits)(&s->gb, len) << (8 - len); - } + if (len > 0) + *q++ = (get_bits) (&s->gb, len) << (8 - len); memset(q, 0, FF_INPUT_BUFFER_PADDING_SIZE); /* XXX: bit_offset bits into last frame */ - init_get_bits(&s->gb, s->last_superframe, s->last_superframe_len * 8 + bit_offset); + init_get_bits(&s->gb, s->last_superframe, + s->last_superframe_len * 8 + bit_offset); /* skip unused bits */ if (s->last_bitoffset > 0) skip_bits(&s->gb, s->last_bitoffset); /* this frame is stored in the last superframe and in the - current one */ + * current one */ if (wma_decode_frame(s, samples, samples_offset) < 0) goto fail; samples_offset += s->frame_len; @@ -875,23 +873,24 @@ static int wma_decode_superframe(AVCodecContext *avctx, void *data, pos = bit_offset + 4 + 4 + s->byte_offset_bits + 3; if (pos >= MAX_CODED_SUPERFRAME_SIZE * 8 || pos > buf_size * 8) return AVERROR_INVALIDDATA; - init_get_bits(&s->gb, buf + (pos >> 3), (buf_size - (pos >> 3))*8); + init_get_bits(&s->gb, buf + (pos >> 3), (buf_size - (pos >> 3)) * 8); len = pos & 7; if (len > 0) skip_bits(&s->gb, len); s->reset_block_lengths = 1; - for(i=0;i<nb_frames;i++) { + for (i = 0; i < nb_frames; i++) { if (wma_decode_frame(s, samples, samples_offset) < 0) goto fail; samples_offset += s->frame_len; } /* we copy the end of the frame in the last frame buffer */ - pos = get_bits_count(&s->gb) + ((bit_offset + 4 + 4 + s->byte_offset_bits + 3) & ~7); + pos = get_bits_count(&s->gb) + + ((bit_offset + 4 + 4 + s->byte_offset_bits + 3) & ~7); s->last_bitoffset = pos & 7; - pos >>= 3; - len = buf_size - pos; + pos >>= 3; + len = buf_size - pos; if (len > MAX_CODED_SUPERFRAME_SIZE || len < 0) { av_log(s->avctx, AV_LOG_ERROR, "len %d invalid\n", len); goto fail; @@ -907,12 +906,13 @@ static int wma_decode_superframe(AVCodecContext *avctx, void *data, av_dlog(s->avctx, "%d %d %d %d outbytes:%td eaten:%d\n", s->frame_len_bits, s->block_len_bits, s->frame_len, s->block_len, - (int8_t *)samples - (int8_t *)data, avctx->block_align); + (int8_t *) samples - (int8_t *) data, avctx->block_align); *got_frame_ptr = 1; return avctx->block_align; - fail: + +fail: /* when error, we reset the bit reservoir */ s->last_superframe_len = 0; return -1; @@ -922,8 +922,8 @@ static av_cold void flush(AVCodecContext *avctx) { WMACodecContext *s = avctx->priv_data; - s->last_bitoffset= - s->last_superframe_len= 0; + s->last_bitoffset = + s->last_superframe_len = 0; } AVCodec ff_wmav1_decoder = { |