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Cosmetics. Renames, indentation and spacing.

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Originally committed as revision 19832 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Benjamin Larsson 2009-09-13 18:05:14 +00:00
parent 72cdcc0b9b
commit 04a6d1b0db
1 changed files with 28 additions and 20 deletions
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34
libavcodec/atrac1.c
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@ -94,7 +94,8 @@ static const uint16_t samples_per_band[3] = {128, 128, 256};
static const uint8_t mdct_long_nbits[3] = {7, 7, 8}; static const uint8_t mdct_long_nbits[3] = {7, 7, 8};
static void at1_imdct(AT1Ctx *q, float *spec, float *out, int nbits, int rev_spec) static void at1_imdct(AT1Ctx *q, float *spec, float *out, int nbits,
int rev_spec)
{ {
MDCTContext* mdct_context; MDCTContext* mdct_context;
int transf_size = 1 << nbits; int transf_size = 1 << nbits;
@ -147,7 +148,8 @@ static int at1_imdct_block(AT1SUCtx* su, AT1Ctx *q)
/* overlap and window between short blocks */ /* overlap and window between short blocks */
q->dsp.vector_fmul_window(&su->spectrum[0][ref_pos+start_pos], q->dsp.vector_fmul_window(&su->spectrum[0][ref_pos+start_pos],
&su->spectrum[0][ref_pos+start_pos],q->short_buf,short_window, 0, 16); &su->spectrum[0][ref_pos+start_pos],
q->short_buf,short_window, 0, 16);
start_pos += 32; // use hardcoded block_size start_pos += 32; // use hardcoded block_size
pos += 32; pos += 32;
} }
@ -166,8 +168,11 @@ static int at1_imdct_block(AT1SUCtx* su, AT1Ctx *q)
return 0; return 0;
} }
/**
* Parse the block size mode byte
*/
static int at1_parse_block_size_mode(GetBitContext* gb, int log2_block_count[AT1_QMF_BANDS]) static int at1_parse_bsm(GetBitContext* gb, int log2_block_cnt[AT1_QMF_BANDS])
{ {
int log2_block_count_tmp, i; int log2_block_count_tmp, i;
@ -176,21 +181,22 @@ static int at1_parse_block_size_mode(GetBitContext* gb, int log2_block_count[AT1
log2_block_count_tmp = get_bits(gb, 2); log2_block_count_tmp = get_bits(gb, 2);
if (log2_block_count_tmp & 1) if (log2_block_count_tmp & 1)
return -1; return -1;
log2_block_count[i] = 2 - log2_block_count_tmp; log2_block_cnt[i] = 2 - log2_block_count_tmp;
} }
/* high band */ /* high band */
log2_block_count_tmp = get_bits(gb, 2); log2_block_count_tmp = get_bits(gb, 2);
if (log2_block_count_tmp != 0 && log2_block_count_tmp != 3) if (log2_block_count_tmp != 0 && log2_block_count_tmp != 3)
return -1; return -1;
log2_block_count[IDX_HIGH_BAND] = 3 - log2_block_count_tmp; log2_block_cnt[IDX_HIGH_BAND] = 3 - log2_block_count_tmp;
skip_bits(gb, 2); skip_bits(gb, 2);
return 0; return 0;
} }
static int at1_unpack_dequant(GetBitContext* gb, AT1SUCtx* su, float spec[AT1_SU_SAMPLES]) static int at1_unpack_dequant(GetBitContext* gb, AT1SUCtx* su,
float spec[AT1_SU_SAMPLES])
{ {
int bits_used, band_num, bfu_num, i; int bits_used, band_num, bfu_num, i;
@ -269,9 +275,8 @@ void at1_subband_synthesis(AT1Ctx *q, AT1SUCtx* su, float *pOut)
} }
static int atrac1_decode_frame(AVCodecContext *avctx, static int atrac1_decode_frame(AVCodecContext *avctx, void *data,
void *data, int *data_size, int *data_size, AVPacket *avpkt)
AVPacket *avpkt)
{ {
const uint8_t *buf = avpkt->data; const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size; int buf_size = avpkt->size;
@ -292,7 +297,7 @@ static int atrac1_decode_frame(AVCodecContext *avctx,
init_get_bits(&gb, &buf[212*ch], 212*8); init_get_bits(&gb, &buf[212*ch], 212*8);
/* parse block_size_mode, 1st byte */ /* parse block_size_mode, 1st byte */
ret = at1_parse_block_size_mode(&gb, su->log2_block_count); ret = at1_parse_bsm(&gb, su->log2_block_count);
if (ret < 0) if (ret < 0)
return ret; return ret;
@ -309,12 +314,15 @@ static int atrac1_decode_frame(AVCodecContext *avctx,
/* round, convert to 16bit and interleave */ /* round, convert to 16bit and interleave */
if (q->channels == 1) { if (q->channels == 1) {
/* mono */ /* mono */
q->dsp.vector_clipf(samples, q->out_samples[0], -32700./(1<<15), 32700./(1<<15), AT1_SU_SAMPLES); q->dsp.vector_clipf(samples, q->out_samples[0], -32700.0 / (1<<15),
32700.0 / (1<<15), AT1_SU_SAMPLES);
} else { } else {
/* stereo */ /* stereo */
for (i = 0; i < AT1_SU_SAMPLES; i++) { for (i = 0; i < AT1_SU_SAMPLES; i++) {
samples[i*2] = av_clipf(q->out_samples[0][i], -32700./(1<<15), 32700./(1<<15)); samples[i*2] = av_clipf(q->out_samples[0][i], -32700.0 / (1<<15),
samples[i*2+1] = av_clipf(q->out_samples[1][i], -32700./(1<<15), 32700./(1<<15)); 32700.0 / (1<<15));
samples[i*2+1] = av_clipf(q->out_samples[1][i], -32700.0 / (1<<15),
32700.0 / (1<<15));
} }
} }