#define _XOPEN_SOURCE 600
-#include <sys/time.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <stdlib.h>
#include <math.h>
-#include <string.h>
#include <regex.h>
#include <sys/select.h>
-#include <stdbool.h>
#include "para.h"
#include "error.h"
/** Information contained in the audio file header. */
struct asf_header_info ahi;
struct getbit_context gb;
- /** Whether to use the bit reservoir. */
- int use_bit_reservoir;
- /** Whether to use variable block length. */
- int use_variable_block_len;
- /** Whether to use exponent coding. */
- int use_exp_vlc;
/** Whether perceptual noise is added. */
int use_noise_coding;
+ /** Depends on number of the bits per second and the frame length. */
int byte_offset_bits;
+ /** Only used if ahi->use_exp_vlc is true. */
struct vlc exp_vlc;
- int exponent_sizes[BLOCK_NB_SIZES];
uint16_t exponent_bands[BLOCK_NB_SIZES][25];
/** The index of the first coef in high band. */
int high_band_start[BLOCK_NB_SIZES];
int frame_len;
/** log2 of frame_len. */
int frame_len_bits;
- /** Number of block sizes. */
+ /** Number of block sizes, one if !ahi->use_variable_block_len. */
int nb_block_sizes;
- /* block info */
- int reset_block_lengths;
+ /* Whether to update block lengths from getbit context. */
+ bool reset_block_lengths;
/** log2 of current block length. */
int block_len_bits;
/** log2 of next block length. */
};
#define EXPVLCBITS 8
-#define EXPMAX DIV_ROUND_UP(19, EXPVLCBITS)
-
#define HGAINVLCBITS 9
-#define HGAINMAX DIV_ROUND_UP(13, HGAINVLCBITS)
-
#define VLCBITS 9
-#define VLCMAX DIV_ROUND_UP(22, VLCBITS)
-#define SINE_WINDOW(x) float sine_ ## x[x] __a_aligned(16)
+/** \cond sine_winows */
+
+#define SINE_WINDOW(x) static float sine_ ## x[x] __a_aligned(16)
SINE_WINDOW(128);
SINE_WINDOW(256);
static float *sine_windows[6] = {
sine_128, sine_256, sine_512, sine_1024, sine_2048, sine_4096
};
+/** \endcond sine_windows */
/* Generate a sine window. */
static void sine_window_init(float *window, int n)
for (i = 0; i < pwd->nb_block_sizes; i++)
imdct_end(pwd->mdct_ctx[i]);
- if (pwd->use_exp_vlc)
+ if (pwd->ahi.use_exp_vlc)
free_vlc(&pwd->exp_vlc);
if (pwd->use_noise_coding)
free_vlc(&pwd->hgain_vlc);
const uint8_t *table;
for (k = 0; k < pwd->nb_block_sizes; k++) {
- block_len = pwd->frame_len >> k;
+ int exponent_size;
+ block_len = pwd->frame_len >> k;
table = NULL;
a = pwd->frame_len_bits - BLOCK_MIN_BITS - k;
if (a < 3) {
n = *table++;
for (i = 0; i < n; i++)
pwd->exponent_bands[k][i] = table[i];
- pwd->exponent_sizes[k] = n;
+ exponent_size = n;
} else {
j = 0;
lpos = 0;
break;
lpos = pos;
}
- pwd->exponent_sizes[k] = j;
+ exponent_size = j;
}
/* max number of coefs */
/* high freq computation */
pwd->high_band_start[k] = (int) ((block_len * 2 * high_freq)
/ ahi->sample_rate + 0.5);
- n = pwd->exponent_sizes[k];
+ n = exponent_size;
j = 0;
pos = 0;
for (i = 0; i < n; i++) {
else
pwd->frame_len_bits = 11;
pwd->frame_len = 1 << pwd->frame_len_bits;
- if (pwd->use_variable_block_len) {
+ if (pwd->ahi.use_variable_block_len) {
int nb_max, nb;
nb = ((flags2 >> 3) & 3) + 1;
if ((ahi->bit_rate / ahi->channels) >= 32000)
else
high_freq = high_freq * 0.5;
}
- PARA_INFO_LOG("channels=%d sample_rate=%d "
- "bitrate=%d block_align=%d\n",
+ PARA_INFO_LOG("channels=%u sample_rate=%u "
+ "bitrate=%u block_align=%d\n",
ahi->channels, ahi->sample_rate,
ahi->bit_rate, ahi->block_align);
PARA_INFO_LOG("frame_len=%d, bps=%f bps1=%f "
pwd->frame_len, bps, bps1,
high_freq, pwd->byte_offset_bits);
PARA_INFO_LOG("use_noise_coding=%d use_exp_vlc=%d nb_block_sizes=%d\n",
- pwd->use_noise_coding, pwd->use_exp_vlc, pwd->nb_block_sizes);
+ pwd->use_noise_coding, pwd->ahi.use_exp_vlc, pwd->nb_block_sizes);
compute_scale_factor_band_sizes(pwd, high_freq);
/* init MDCT windows : simple sinus window */
pwd->windows[i] = sine_windows[pwd->frame_len_bits - i - 7];
}
- pwd->reset_block_lengths = 1;
+ pwd->reset_block_lengths = true;
if (pwd->use_noise_coding) {
/* init the noise generator */
- if (pwd->use_exp_vlc)
+ if (pwd->ahi.use_exp_vlc)
pwd->noise_mult = 0.02;
else
pwd->noise_mult = 0.04;
return 0;
}
-static void wma_lsp_to_curve_init(struct private_wmadec_data *pwd, int frame_len)
+static void wma_lsp_to_curve_init(struct private_wmadec_data *pwd)
{
float wdel, a, b;
int i, e, m;
- wdel = M_PI / frame_len;
- for (i = 0; i < frame_len; i++)
+ wdel = M_PI / pwd->frame_len;
+ for (i = 0; i < pwd->frame_len; i++)
pwd->lsp_cos_table[i] = 2.0f * cos(wdel * i);
/* tables for x^-0.25 computation */
return ret;
}
- pwd->use_exp_vlc = pwd->ahi.flags2 & 0x0001;
- pwd->use_bit_reservoir = pwd->ahi.flags2 & 0x0002;
- pwd->use_variable_block_len = pwd->ahi.flags2 & 0x0004;
-
ret = wma_init(pwd);
if (ret < 0)
return ret;
wma_hgain_huffcodes, 2);
}
- if (pwd->use_exp_vlc) {
+ if (pwd->ahi.use_exp_vlc) {
PARA_INFO_LOG("using exp_vlc\n");
- init_vlc(&pwd->exp_vlc, EXPVLCBITS,
- sizeof(wma_scale_huffbits), wma_scale_huffbits,
- wma_scale_huffcodes, 4);
+ init_vlc(&pwd->exp_vlc, EXPVLCBITS, sizeof(wma_scale_huffbits),
+ wma_scale_huffbits, wma_scale_huffcodes, 4);
} else {
PARA_INFO_LOG("using curve\n");
- wma_lsp_to_curve_init(pwd, pwd->frame_len);
+ wma_lsp_to_curve_init(pwd);
}
*result = pwd;
return pwd->ahi.header_len;
last_exp = 36;
while (q < q_end) {
- code = get_vlc(&pwd->gb, pwd->exp_vlc.table, EXPVLCBITS, EXPMAX);
+ code = get_vlc(&pwd->gb, pwd->exp_vlc.table, EXPVLCBITS);
if (code < 0)
return code;
/* NOTE: this offset is the same as MPEG4 AAC ! */
val = get_bits(&pwd->gb, 7) - 19;
else {
int code = get_vlc(&pwd->gb,
- pwd->hgain_vlc.table, HGAINVLCBITS,
- HGAINMAX);
+ pwd->hgain_vlc.table, HGAINVLCBITS);
if (code < 0)
return code;
val += code - 18;
*coefs++ = 0.0;
continue;
}
- mult1 = mult;
n1 = pwd->exponent_high_sizes[bsize];
/* compute power of high bands */
exponents = pwd->exponents[ch] +
mult1 = sqrt(exp_power[j]
/ exp_power[last_high_band]);
/* XXX: use a table */
- mult1 = mult1 * pow(10,
- pwd->high_band_values[ch][j] * 0.05);
+ mult1 *= pow(10, pwd->high_band_values[ch][j] * 0.05);
mult1 /= (pwd->max_exponent[ch] * pwd->noise_mult);
mult1 *= mdct_norm;
for (i = 0; i < n; i++) {
}
/* very high freqs: noise */
n = pwd->block_len - pwd->coefs_end[bsize];
- mult1 = mult * exponents[((-1 << bsize)) >> esize];
+ mult1 = mult * exponents[(-(1 << bsize)) >> esize];
for (i = 0; i < n; i++) {
*coefs++ = pwd->noise_table[pwd->noise_index] * mult1;
pwd->noise_index = (pwd->noise_index + 1)
int nb_coefs[MAX_CHANNELS];
/* compute current block length */
- if (pwd->use_variable_block_len) {
+ if (pwd->ahi.use_variable_block_len) {
n = wma_log2(pwd->nb_block_sizes - 1) + 1;
if (pwd->reset_block_lengths) {
- pwd->reset_block_lengths = 0;
+ pwd->reset_block_lengths = false;
v = get_bits(&pwd->gb, n);
if (v >= pwd->nb_block_sizes)
return -E_WMA_BLOCK_SIZE;
if ((pwd->block_len_bits == pwd->frame_len_bits) || get_bit(&pwd->gb)) {
for (ch = 0; ch < pwd->ahi.channels; ch++) {
if (pwd->channel_coded[ch]) {
- if (pwd->use_exp_vlc) {
+ if (pwd->ahi.use_exp_vlc) {
ret = decode_exp_vlc(pwd, ch);
if (ret < 0)
return ret;
eptr = ptr + nb_coefs[ch];
memset(ptr, 0, pwd->block_len * sizeof(int16_t));
for (;;) {
- code = get_vlc(&pwd->gb, coef_vlc->table,
- VLCBITS, VLCMAX);
+ code = get_vlc(&pwd->gb, coef_vlc->table, VLCBITS);
if (code < 0)
return code;
if (code == 1) /* EOB */
for (ch = 0; ch < pwd->ahi.channels; ch++) {
int n4, idx;
- n = pwd->block_len;
n4 = pwd->block_len / 2;
if (pwd->channel_coded[ch])
imdct(pwd->mdct_ctx[bsize], pwd->output, pwd->coefs[ch]);
/* Decode a frame of frame_len samples. */
static int wma_decode_frame(struct private_wmadec_data *pwd, int16_t *samples)
{
- int ret, i, n, ch, incr;
+ int ret, i, ch;
int16_t *ptr;
float *iptr;
}
/* convert frame to integer */
- n = pwd->frame_len;
- incr = pwd->ahi.channels;
for (ch = 0; ch < pwd->ahi.channels; ch++) {
ptr = samples + ch;
iptr = pwd->frame_out[ch];
- for (i = 0; i < n; i++) {
+ for (i = 0; i < pwd->frame_len; i++) {
*ptr = av_clip_int16(lrintf(*iptr++));
- ptr += incr;
+ ptr += pwd->ahi.channels;
}
/* prepare for next block */
memmove(&pwd->frame_out[ch][0], &pwd->frame_out[ch][pwd->frame_len],
if (buf_size == 0) {
pwd->last_superframe_len = 0;
+ *data_size = 0;
return 0;
}
- if (buf_size < pwd->ahi.block_align)
+ if (buf_size < pwd->ahi.block_align) {
+ *data_size = 0;
return 0;
+ }
buf_size = pwd->ahi.block_align;
samples = data;
init_get_bits(&pwd->gb, buf, buf_size);
- if (pwd->use_bit_reservoir) {
+ if (pwd->ahi.use_bit_reservoir) {
int i, nb_frames, bit_offset, pos, len;
uint8_t *q;
if (len > 0)
skip_bits(&pwd->gb, len);
- pwd->reset_block_lengths = 1;
+ pwd->reset_block_lengths = true;
for (i = 0; i < nb_frames; i++) {
ret = wma_decode_frame(pwd, samples);
if (ret < 0)
#define WMA_OUTPUT_BUFFER_SIZE (128 * 1024)
-static void wmadec_post_select(__a_unused struct sched *s, struct task *t)
+static int wmadec_post_select(__a_unused struct sched *s, void *context)
{
- struct filter_node *fn = container_of(t, struct filter_node, task);
- int ret, converted;
+ struct filter_node *fn = context;
+ int ret, converted, out_size;
struct private_wmadec_data *pwd = fn->private_data;
struct btr_node *btrn = fn->btrn;
size_t len;
- char *in;
+ char *in, *out;
next_buffer:
converted = 0;
- t->error = 0;
ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
if (ret < 0)
goto err;
if (ret == 0)
- return;
+ return 0;
btr_merge(btrn, fn->min_iqs);
- len = btr_next_buffer(btrn, (char **)&in);
+ len = btr_next_buffer(btrn, &in);
ret = -E_WMADEC_EOF;
if (len < fn->min_iqs)
goto err;
fn->min_iqs += 4096;
goto next_buffer;
}
- fn->min_iqs = 2 * (WMA_FRAME_SKIP + pwd->ahi.block_align);
+ fn->min_iqs = 2 * pwd->ahi.packet_size;
fn->private_data = pwd;
converted = pwd->ahi.header_len;
goto success;
}
- fn->min_iqs = WMA_FRAME_SKIP + pwd->ahi.block_align;
- for (;;) {
- char *out;
- int out_size = WMA_OUTPUT_BUFFER_SIZE;
- if (converted + fn->min_iqs > len)
- break;
- out = para_malloc(WMA_OUTPUT_BUFFER_SIZE);
- ret = wma_decode_superframe(pwd, out,
- &out_size, (uint8_t *)in + converted + WMA_FRAME_SKIP,
- len - WMA_FRAME_SKIP);
- if (ret < 0) {
- free(out);
- goto err;
- }
- btr_add_output(out, out_size, btrn);
- converted += ret + WMA_FRAME_SKIP;
+ fn->min_iqs = pwd->ahi.packet_size;
+ if (fn->min_iqs > len)
+ goto success;
+ out_size = WMA_OUTPUT_BUFFER_SIZE;
+ out = para_malloc(out_size);
+ ret = wma_decode_superframe(pwd, out, &out_size,
+ (uint8_t *)in + WMA_FRAME_SKIP, len - WMA_FRAME_SKIP);
+ if (ret < 0) {
+ free(out);
+ goto err;
}
+ if (out_size > 0) {
+ out = para_realloc(out, out_size);
+ btr_add_output(out, out_size, btrn);
+ } else
+ free(out);
+ converted += pwd->ahi.packet_size;
success:
btr_consume(btrn, converted);
- return;
+ return 0;
err:
assert(ret < 0);
- t->error = ret;
- btr_remove_node(btrn);
+ btr_remove_node(&fn->btrn);
+ return ret;
}
static void wmadec_open(struct filter_node *fn)
projects / paraslash.git / blobdiff