#define _XOPEN_SOURCE 600
-#include <sys/time.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include "ggo.h"
#include "string.h"
#include "sched.h"
+#include "buffer_tree.h"
#include "filter.h"
#include "bitstream.h"
#include "imdct.h"
#define LSP_POW_BITS 7
struct private_wmadec_data {
+ /** Information contained in the audio file header. */
struct asf_header_info ahi;
struct getbit_context gb;
- int use_bit_reservoir;
- int use_variable_block_len;
- int use_exp_vlc; ///< exponent coding: 0 = lsp, 1 = vlc + delta
- int use_noise_coding; ///< true if perceptual noise is added
+ /** 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];
- int high_band_start[BLOCK_NB_SIZES]; ///< index of first coef in high band
- int coefs_start; ///< first coded coef
- int coefs_end[BLOCK_NB_SIZES]; ///< max number of coded coefficients
+ /** The index of the first coef in high band. */
+ int high_band_start[BLOCK_NB_SIZES];
+ /** Maximal number of coded coefficients. */
+ int coefs_end[BLOCK_NB_SIZES];
int exponent_high_sizes[BLOCK_NB_SIZES];
int exponent_high_bands[BLOCK_NB_SIZES][HIGH_BAND_MAX_SIZE];
struct vlc hgain_vlc;
uint16_t *run_table[2];
uint16_t *level_table[2];
const struct coef_vlc_table *coef_vlcs[2];
- /* frame info */
- int frame_len; ///< frame length in samples
- int frame_len_bits; ///< frame_len = 1 << frame_len_bits
- int nb_block_sizes; ///< number of block sizes
+ /** Frame length in samples. */
+ int frame_len;
+ /** log2 of frame_len. */
+ int frame_len_bits;
+ /** Number of block sizes, one if !ahi->use_variable_block_len. */
+ int nb_block_sizes;
/* block info */
int reset_block_lengths;
- int block_len_bits; ///< log2 of current block length
- int next_block_len_bits; ///< log2 of next block length
- int prev_block_len_bits; ///< log2 of prev block length
- int block_len; ///< block length in samples
- int block_pos; ///< current position in frame
- uint8_t ms_stereo; ///< true if mid/side stereo mode
- uint8_t channel_coded[MAX_CHANNELS]; ///< true if channel is coded
- int exponents_bsize[MAX_CHANNELS]; ///< log2 ratio frame/exp. length
+ /** log2 of current block length. */
+ int block_len_bits;
+ /** log2 of next block length. */
+ int next_block_len_bits;
+ /** log2 of previous block length. */
+ int prev_block_len_bits;
+ /** Block length in samples. */
+ int block_len;
+ /** Current position in frame. */
+ int block_pos;
+ /** True if mid/side stereo mode. */
+ uint8_t ms_stereo;
+ /** True if channel is coded. */
+ uint8_t channel_coded[MAX_CHANNELS];
+ /** log2 ratio frame/exp. length. */
+ int exponents_bsize[MAX_CHANNELS];
+
float exponents[MAX_CHANNELS][BLOCK_MAX_SIZE];
float max_exponent[MAX_CHANNELS];
int16_t coefs1[MAX_CHANNELS][BLOCK_MAX_SIZE];
float output[BLOCK_MAX_SIZE * 2];
struct mdct_context *mdct_ctx[BLOCK_NB_SIZES];
float *windows[BLOCK_NB_SIZES];
- /* output buffer for one frame and the last for IMDCT windowing */
+ /** Output buffer for one frame and the last for IMDCT windowing. */
float frame_out[MAX_CHANNELS][BLOCK_MAX_SIZE * 2];
- /* last frame info */
+ /** Last frame info. */
uint8_t last_superframe[MAX_CODED_SUPERFRAME_SIZE + 4]; /* padding added */
int last_bitoffset;
int last_superframe_len;
};
#define EXPVLCBITS 8
-#define EXPMAX ((19 + EXPVLCBITS - 1) / EXPVLCBITS)
+#define EXPMAX DIV_ROUND_UP(19, EXPVLCBITS)
#define HGAINVLCBITS 9
-#define HGAINMAX ((13 + HGAINVLCBITS - 1) / HGAINVLCBITS)
+#define HGAINMAX DIV_ROUND_UP(13, HGAINVLCBITS)
#define VLCBITS 9
-#define VLCMAX ((22 + VLCBITS - 1) / VLCBITS)
+#define VLCMAX DIV_ROUND_UP(22, VLCBITS)
+
+/** \cond sine_winows */
-#define SINE_WINDOW(x) float sine_ ## x[x] __aligned(16)
+#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);
int a, b, pos, lpos, k, block_len, i, j, n;
const uint8_t *table;
- pwd->coefs_start = 0;
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++) {
return -E_WMA_BAD_PARAMS;
/* compute MDCT block size */
- if (ahi->sample_rate <= 16000) {
+ if (ahi->sample_rate <= 16000)
pwd->frame_len_bits = 9;
- } else if (ahi->sample_rate <= 22050) {
+ else if (ahi->sample_rate <= 22050)
pwd->frame_len_bits = 10;
- } else {
+ 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)
high_freq = high_freq * 0.5;
else
high_freq = high_freq * 0.3;
- } else if (sample_rate1 == 11025) {
+ } else if (sample_rate1 == 11025)
high_freq = high_freq * 0.7;
- } else if (sample_rate1 == 8000) {
- if (bps <= 0.625) {
+ else if (sample_rate1 == 8000) {
+ if (bps <= 0.625)
high_freq = high_freq * 0.5;
- } else if (bps > 0.75) {
+ else if (bps > 0.75)
pwd->use_noise_coding = 0;
- } else {
+ else
high_freq = high_freq * 0.65;
- }
} else {
- if (bps >= 0.8) {
+ if (bps >= 0.8)
high_freq = high_freq * 0.75;
- } else if (bps >= 0.6) {
+ else if (bps >= 0.6)
high_freq = high_freq * 0.6;
- } else {
+ else
high_freq = high_freq * 0.5;
- }
}
PARA_INFO_LOG("channels=%d sample_rate=%d "
"bitrate=%d block_align=%d\n",
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 */
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 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);
while (q < q_end) {
code = get_vlc(&pwd->gb, pwd->exp_vlc.table, EXPVLCBITS, EXPMAX);
if (code < 0)
- return -1;
+ return code;
/* NOTE: this offset is the same as MPEG4 AAC ! */
last_exp += code - 60;
/* XXX: use a table */
pwd->hgain_vlc.table, HGAINVLCBITS,
HGAINMAX);
if (code < 0)
- return -1;
+ return code;
val += code - 18;
}
pwd->high_band_values[ch][i] = val;
coefs = pwd->coefs[ch];
if (!pwd->use_noise_coding) {
/* XXX: optimize more */
- for (i = 0; i < pwd->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 = pwd->block_len - pwd->coefs_end[bsize];
for (i = 0; i < n; i++)
*coefs++ = 0.0;
continue;
}
- mult1 = mult;
- /* very low freqs : noise */
- for (i = 0; i < pwd->coefs_start; i++) {
- *coefs++ =
- pwd->noise_table[pwd->noise_index] *
- exponents[i << bsize >> esize] *
- mult1;
- pwd->noise_index =
- (pwd->noise_index +
- 1) & (NOISE_TAB_SIZE - 1);
- }
-
n1 = pwd->exponent_high_sizes[bsize];
-
/* compute power of high bands */
exponents = pwd->exponents[ch] +
- (pwd->high_band_start[bsize] << bsize);
- last_high_band = 0; /* avoid warning */
+ (pwd->high_band_start[bsize] << bsize);
+ last_high_band = 0; /* avoid warning */
for (j = 0; j < n1; j++) {
- n = pwd->exponent_high_bands[pwd->
- frame_len_bits
- -
- pwd->
- block_len_bits]
- [j];
+ n = pwd->exponent_high_bands[
+ pwd->frame_len_bits - pwd->block_len_bits][j];
if (pwd->high_band_coded[ch][j]) {
float e2, val;
e2 = 0;
for (i = 0; i < n; i++) {
- val = exponents[i << bsize
- >> esize];
+ val = exponents[i << bsize >> esize];
e2 += val * val;
}
exp_power[j] = e2 / n;
}
exponents += n << bsize;
}
-
/* main freqs and high freqs */
- exponents =
- pwd->exponents[ch] +
- (pwd->coefs_start << bsize);
+ exponents = pwd->exponents[ch];
for (j = -1; j < n1; j++) {
- if (j < 0) {
- n = pwd->high_band_start[bsize] -
- pwd->coefs_start;
- } else {
- n = pwd->exponent_high_bands[pwd->
- frame_len_bits
- -
- pwd->
- block_len_bits]
- [j];
- }
+ if (j < 0)
+ n = pwd->high_band_start[bsize];
+ else
+ n = pwd->exponent_high_bands[pwd->frame_len_bits
+ - pwd->block_len_bits][j];
if (j >= 0 && pwd->high_band_coded[ch][j]) {
/* use noise with specified power */
- mult1 =
- sqrt(exp_power[j] /
- exp_power
- [last_high_band]);
+ 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 =
- mult1 /
- (pwd->max_exponent[ch] *
- pwd->noise_mult);
+ 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++) {
- noise =
- pwd->noise_table[pwd->
- noise_index];
- pwd->noise_index =
- (pwd->noise_index +
- 1) &
- (NOISE_TAB_SIZE -
- 1);
- *coefs++ =
- noise *
- exponents[i << bsize
- >> esize]
- * mult1;
+ noise = pwd->noise_table[pwd->noise_index];
+ pwd->noise_index = (pwd->noise_index + 1)
+ & (NOISE_TAB_SIZE - 1);
+ *coefs++ = noise * exponents[
+ i << bsize >> esize] * mult1;
}
exponents += n << bsize;
} else {
/* coded values + small noise */
for (i = 0; i < n; i++) {
- noise =
- pwd->noise_table[pwd->
- noise_index];
- pwd->noise_index =
- (pwd->noise_index +
- 1) &
- (NOISE_TAB_SIZE -
- 1);
- *coefs++ =
- ((*coefs1++) +
- noise) *
- exponents[i << bsize
- >> esize]
- * mult;
+ noise = pwd->noise_table[pwd->noise_index];
+ pwd->noise_index = (pwd->noise_index + 1)
+ & (NOISE_TAB_SIZE - 1);
+ *coefs++ = ((*coefs1++) + noise) *
+ exponents[i << bsize >> esize]
+ * mult;
}
exponents += n << bsize;
}
}
-
- /* very high freqs : noise */
+ /* 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) & (NOISE_TAB_SIZE - 1);
+ *coefs++ = pwd->noise_table[pwd->noise_index] * mult1;
+ pwd->noise_index = (pwd->noise_index + 1)
+ & (NOISE_TAB_SIZE - 1);
}
}
}
/**
- * @return 0 if OK. 1 if last block of frame. return -1 if
- * unrecorrable error.
+ * Returns 0 if OK, 1 if last block of frame, negative on uncorrectable
+ * errors.
*/
static int wma_decode_block(struct private_wmadec_data *pwd)
{
- int n, v, ch, code, bsize;
+ int ret, n, v, ch, code, bsize;
int coef_nb_bits, total_gain;
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;
v = get_bits(&pwd->gb, n);
if (v >= pwd->nb_block_sizes)
- return -1;
+ return -E_WMA_BLOCK_SIZE;
pwd->prev_block_len_bits = pwd->frame_len_bits - v;
v = get_bits(&pwd->gb, n);
if (v >= pwd->nb_block_sizes)
- return -1;
+ return -E_WMA_BLOCK_SIZE;
pwd->block_len_bits = pwd->frame_len_bits - v;
} else {
/* update block lengths */
}
v = get_bits(&pwd->gb, n);
if (v >= pwd->nb_block_sizes)
- return -1;
+ return -E_WMA_BLOCK_SIZE;
pwd->next_block_len_bits = pwd->frame_len_bits - v;
} else {
/* fixed block len */
if (!v)
goto next;
- /* read total gain and extract corresponding number of bits for
- coef escape coding */
+ /*
+ * Read total gain and extract corresponding number of bits for coef
+ * escape coding.
+ */
total_gain = 1;
for (;;) {
int a = get_bits(&pwd->gb, 7);
coef_nb_bits = wma_total_gain_to_bits(total_gain);
/* compute number of coefficients */
- n = pwd->coefs_end[bsize] - pwd->coefs_start;
+ n = pwd->coefs_end[bsize];
for (ch = 0; ch < pwd->ahi.channels; ch++)
nb_coefs[ch] = n;
- if (compute_high_band_values(pwd, bsize, nb_coefs) < 0)
- return -1;
+ ret = compute_high_band_values(pwd, bsize, nb_coefs);
+ if (ret < 0)
+ return ret;
/* exponents can be reused in short blocks. */
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 (decode_exp_vlc(pwd, ch) < 0)
- return -1;
- } else {
+ if (pwd->ahi.use_exp_vlc) {
+ ret = decode_exp_vlc(pwd, ch);
+ if (ret < 0)
+ return ret;
+ } else
decode_exp_lsp(pwd, ch);
- }
pwd->exponents_bsize[ch] = bsize;
}
}
code = get_vlc(&pwd->gb, coef_vlc->table,
VLCBITS, VLCMAX);
if (code < 0)
- return -1;
+ return code;
if (code == 1) /* EOB */
break;
if (code == 0) { /* escape */
break;
}
}
-
compute_mdct_coefficients(pwd, bsize, total_gain, nb_coefs);
-
if (pwd->ms_stereo && pwd->channel_coded[1]) {
float a, b;
int i;
-
/*
* Nominal case for ms stereo: we do it before mdct.
*
pwd->coefs[1][i] = a - b;
}
}
-
next:
for (ch = 0; ch < pwd->ahi.channels; ch++) {
- int n4, index;
+ 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]);
memset(pwd->output, 0, sizeof(pwd->output));
/* multiply by the window and add in the frame */
- index = (pwd->frame_len / 2) + pwd->block_pos - n4;
- wma_window(pwd, &pwd->frame_out[ch][index]);
+ idx = (pwd->frame_len / 2) + pwd->block_pos - n4;
+ wma_window(pwd, &pwd->frame_out[ch][idx]);
}
/* update block number */
for (;;) {
ret = wma_decode_block(pwd);
if (ret < 0)
- return -1;
+ return ret;
if (ret)
break;
}
{
int ret;
int16_t *samples;
- static int frame_count;
if (buf_size == 0) {
pwd->last_superframe_len = 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;
* This frame is stored in the last superframe and in
* the current one.
*/
- ret = -E_WMA_DECODE;
- if (wma_decode_frame(pwd, samples) < 0)
+ ret = wma_decode_frame(pwd, samples);
+ if (ret < 0)
goto fail;
- frame_count++;
samples += pwd->ahi.channels * pwd->frame_len;
}
pwd->reset_block_lengths = 1;
for (i = 0; i < nb_frames; i++) {
- ret = -E_WMA_DECODE;
- if (wma_decode_frame(pwd, samples) < 0)
+ ret = wma_decode_frame(pwd, samples);
+ if (ret < 0)
goto fail;
- frame_count++;
samples += pwd->ahi.channels * pwd->frame_len;
}
if (pwd->ahi.channels * pwd->frame_len * sizeof(int16_t) > *data_size)
goto fail;
/* single frame decode */
- ret = -E_WMA_DECODE;
- if (wma_decode_frame(pwd, samples) < 0)
+ ret = wma_decode_frame(pwd, samples);
+ if (ret < 0)
goto fail;
- frame_count++;
samples += pwd->ahi.channels * pwd->frame_len;
}
- PARA_DEBUG_LOG("frame_count: %d frame_len: %d, block_len: %d, "
- "outbytes: %zd, eaten: %d\n",
- frame_count, pwd->frame_len, pwd->block_len,
- (int8_t *) samples - (int8_t *) data, pwd->ahi.block_align);
+ PARA_DEBUG_LOG("frame_len: %d, block_len: %d, outbytes: %d, eaten: %d\n",
+ pwd->frame_len, pwd->block_len,
+ (int)((int8_t *)samples - (int8_t *)data), pwd->ahi.block_align);
*data_size = (int8_t *)samples - (int8_t *)data;
return pwd->ahi.block_align;
fail:
return ret;
}
-static ssize_t wmadec_convert(char *inbuffer, size_t len,
- struct filter_node *fn)
-{
- int ret, out_size = fn->bufsize - fn->loaded;
- struct private_wmadec_data *pwd = fn->private_data;
-
- if (out_size < 128 * 1024)
- return 0;
- if (len <= WMA_FRAME_SKIP)
- return 0;
- if (!pwd) {
- ret = wma_decode_init(inbuffer, len, &pwd);
- if (ret <= 0)
- return ret;
- fn->private_data = pwd;
- fn->fc->channels = pwd->ahi.channels;
- fn->fc->samplerate = pwd->ahi.sample_rate;
- return pwd->ahi.header_len;
- }
- /* skip 31 bytes */
- if (len <= WMA_FRAME_SKIP + pwd->ahi.block_align)
- return 0;
- ret = wma_decode_superframe(pwd, fn->buf + fn->loaded,
- &out_size, (uint8_t *)inbuffer + WMA_FRAME_SKIP,
- len - WMA_FRAME_SKIP);
- if (ret < 0)
- return ret;
- fn->loaded += out_size;
- return ret + WMA_FRAME_SKIP;
-}
-
static void wmadec_close(struct filter_node *fn)
{
struct private_wmadec_data *pwd = fn->private_data;
if (!pwd)
return;
wmadec_cleanup(pwd);
- free(fn->buf);
- fn->buf = NULL;
free(fn->private_data);
fn->private_data = NULL;
}
+static int wmadec_execute(struct btr_node *btrn, const char *cmd, char **result)
+{
+ struct filter_node *fn = btr_context(btrn);
+ struct private_wmadec_data *pwd = fn->private_data;
+
+ return decoder_execute(cmd, pwd->ahi.sample_rate, pwd->ahi.channels,
+ result);
+}
+
+#define WMA_OUTPUT_BUFFER_SIZE (128 * 1024)
+
+static int wmadec_post_select(__a_unused struct sched *s, struct task *t)
+{
+ struct filter_node *fn = container_of(t, struct filter_node, task);
+ int ret, converted, out_size;
+ struct private_wmadec_data *pwd = fn->private_data;
+ struct btr_node *btrn = fn->btrn;
+ size_t len;
+ char *in, *out;
+
+next_buffer:
+ converted = 0;
+ ret = btr_node_status(btrn, fn->min_iqs, BTR_NT_INTERNAL);
+ if (ret < 0)
+ goto err;
+ if (ret == 0)
+ return 0;
+ btr_merge(btrn, fn->min_iqs);
+ len = btr_next_buffer(btrn, (char **)&in);
+ ret = -E_WMADEC_EOF;
+ if (len < fn->min_iqs)
+ goto err;
+ if (!pwd) {
+ ret = wma_decode_init(in, len, &pwd);
+ if (ret < 0)
+ goto err;
+ if (ret == 0) {
+ fn->min_iqs += 4096;
+ goto next_buffer;
+ }
+ fn->min_iqs = 2 * (WMA_FRAME_SKIP + pwd->ahi.block_align);
+ fn->private_data = pwd;
+ converted = pwd->ahi.header_len;
+ goto success;
+ }
+ fn->min_iqs = WMA_FRAME_SKIP + pwd->ahi.block_align;
+ 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;
+ }
+ out = para_realloc(out, out_size);
+ if (out_size > 0)
+ btr_add_output(out, out_size, btrn);
+ converted += ret + WMA_FRAME_SKIP;
+success:
+ btr_consume(btrn, converted);
+ return 0;
+err:
+ assert(ret < 0);
+ btr_remove_node(&fn->btrn);
+ return ret;
+}
+
static void wmadec_open(struct filter_node *fn)
{
- fn->bufsize = 1024 * 1024;
- fn->buf = para_malloc(fn->bufsize);
fn->private_data = NULL;
- fn->loaded = 0;
+ fn->min_iqs = 4096;
}
/**
{
f->open = wmadec_open;
f->close = wmadec_close;
- f->convert = wmadec_convert;
+ f->execute = wmadec_execute;
+ f->pre_select = generic_filter_pre_select;
+ f->post_select = wmadec_post_select;
}
projects / paraslash.git / blobdiff