static av_cold int decode_init(AVCodecContext * avctx) {
NellyMoserDecodeContext *s = avctx->priv_data;
s->avctx = avctx;
s->imdct_out = s->imdct_buf[0];
s->imdct_prev = s->imdct_buf[1];
av_lfg_init(&s->random_state, 0);
ff_mdct_init(&s->imdct_ctx, 8, 1, 1.0);
s->fdsp = avpriv_float_dsp_alloc(avctx->flags & CODEC_FLAG_BITEXACT);
if (!s->fdsp)
return AVERROR(ENOMEM);
s->scale_bias = 1.0/(32768*8);
avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
/* Generate overlap window */
if (!ff_sine_128[127])
ff_init_ff_sine_windows(7);
avctx->channels = 1;
avctx->channel_layout = AV_CH_LAYOUT_MONO;
return 0;
}
static av_cold int init(AVFilterContext *ctx)
{
MixContext *s = ctx->priv;
int i;
for (i = 0; i < s->nb_inputs; i++) {
char name[32];
AVFilterPad pad = { 0 };
snprintf(name, sizeof(name), "input%d", i);
pad.type = AVMEDIA_TYPE_AUDIO;
pad.name = av_strdup(name);
if (!pad.name)
return AVERROR(ENOMEM);
pad.filter_frame = filter_frame;
ff_insert_inpad(ctx, i, &pad);
}
s->fdsp = avpriv_float_dsp_alloc(0);
if (!s->fdsp)
return AVERROR(ENOMEM);
return 0;
}
av_cold int ff_ac3_float_encode_init(AVCodecContext *avctx)
{
AC3EncodeContext *s = avctx->priv_data;
s->fdsp = avpriv_float_dsp_alloc(avctx->flags & CODEC_FLAG_BITEXACT);
if (!s->fdsp)
return AVERROR(ENOMEM);
return ff_ac3_encode_init(avctx);
}
static av_cold int init(AVFilterContext *ctx)
{
VolumeContext *vol = ctx->priv;
vol->fdsp = avpriv_float_dsp_alloc(0);
if (!vol->fdsp)
return AVERROR(ENOMEM);
return set_expr(&vol->volume_pexpr, vol->volume_expr, ctx);
}
static av_cold int init(AVFilterContext *ctx)
{
AudioFIRContext *s = ctx->priv;
AVFilterPad pad, vpad;
int ret;
pad = (AVFilterPad){
.name = av_strdup("default"),
.type = AVMEDIA_TYPE_AUDIO,
.config_props = config_output,
};
if (!pad.name)
return AVERROR(ENOMEM);
if (s->response) {
vpad = (AVFilterPad){
.name = av_strdup("filter_response"),
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_video,
};
if (!vpad.name)
return AVERROR(ENOMEM);
}
ret = ff_insert_outpad(ctx, 0, &pad);
if (ret < 0) {
av_freep(&pad.name);
return ret;
}
if (s->response) {
ret = ff_insert_outpad(ctx, 1, &vpad);
if (ret < 0) {
av_freep(&vpad.name);
return ret;
}
}
s->fdsp = avpriv_float_dsp_alloc(0);
if (!s->fdsp)
return AVERROR(ENOMEM);
ff_afir_init(&s->afirdsp);
return 0;
}
static const AVFilterPad afir_inputs[] = {
{
.name = "main",
.type = AVMEDIA_TYPE_AUDIO,
},{
.name = "ir",
static av_cold int atrac3p_decode_init(AVCodecContext *avctx)
{
ATRAC3PContext *ctx = avctx->priv_data;
int i, ch, ret;
if (!avctx->block_align) {
av_log(avctx, AV_LOG_ERROR, "block_align is not set\n");
return AVERROR(EINVAL);
}
ff_atrac3p_init_vlcs();
/* initialize IPQF */
ff_mdct_init(&ctx->ipqf_dct_ctx, 5, 1, 32.0 / 32768.0);
ff_atrac3p_init_imdct(avctx, &ctx->mdct_ctx);
ff_atrac_init_gain_compensation(&ctx->gainc_ctx, 6, 2);
ff_atrac3p_init_wave_synth();
if ((ret = set_channel_params(ctx, avctx)) < 0)
return ret;
ctx->my_channel_layout = avctx->channel_layout;
ctx->ch_units = av_mallocz_array(ctx->num_channel_blocks, sizeof(*ctx->ch_units));
ctx->fdsp = avpriv_float_dsp_alloc(avctx->flags & CODEC_FLAG_BITEXACT);
if (!ctx->ch_units || !ctx->fdsp) {
atrac3p_decode_close(avctx);
return AVERROR(ENOMEM);
}
for (i = 0; i < ctx->num_channel_blocks; i++) {
for (ch = 0; ch < 2; ch++) {
ctx->ch_units[i].channels[ch].ch_num = ch;
ctx->ch_units[i].channels[ch].wnd_shape = &ctx->ch_units[i].channels[ch].wnd_shape_hist[0][0];
ctx->ch_units[i].channels[ch].wnd_shape_prev = &ctx->ch_units[i].channels[ch].wnd_shape_hist[1][0];
ctx->ch_units[i].channels[ch].gain_data = &ctx->ch_units[i].channels[ch].gain_data_hist[0][0];
ctx->ch_units[i].channels[ch].gain_data_prev = &ctx->ch_units[i].channels[ch].gain_data_hist[1][0];
ctx->ch_units[i].channels[ch].tones_info = &ctx->ch_units[i].channels[ch].tones_info_hist[0][0];
ctx->ch_units[i].channels[ch].tones_info_prev = &ctx->ch_units[i].channels[ch].tones_info_hist[1][0];
}
ctx->ch_units[i].waves_info = &ctx->ch_units[i].wave_synth_hist[0];
ctx->ch_units[i].waves_info_prev = &ctx->ch_units[i].wave_synth_hist[1];
}
avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
return 0;
}
static av_cold int init(AVFilterContext *ctx)
{
MixContext *s = ctx->priv;
char *p, *arg, *saveptr = NULL;
float last_weight = 1.f;
int i, ret;
for (i = 0; i < s->nb_inputs; i++) {
AVFilterPad pad = { 0 };
pad.type = AVMEDIA_TYPE_AUDIO;
pad.name = av_asprintf("input%d", i);
if (!pad.name)
return AVERROR(ENOMEM);
if ((ret = ff_insert_inpad(ctx, i, &pad)) < 0) {
av_freep(&pad.name);
return ret;
}
}
s->fdsp = avpriv_float_dsp_alloc(0);
if (!s->fdsp)
return AVERROR(ENOMEM);
s->weights = av_mallocz_array(s->nb_inputs, sizeof(*s->weights));
if (!s->weights)
return AVERROR(ENOMEM);
p = s->weights_str;
for (i = 0; i < s->nb_inputs; i++) {
if (!(arg = av_strtok(p, " ", &saveptr)))
break;
p = NULL;
sscanf(arg, "%f", &last_weight);
s->weights[i] = last_weight;
s->weight_sum += last_weight;
}
for (; i < s->nb_inputs; i++) {
s->weights[i] = last_weight;
s->weight_sum += last_weight;
}
return 0;
}
static av_cold int ra288_decode_init(AVCodecContext *avctx)
{
RA288Context *ractx = avctx->priv_data;
avctx->channels = 1;
avctx->channel_layout = AV_CH_LAYOUT_MONO;
avctx->sample_fmt = AV_SAMPLE_FMT_FLT;
if (avctx->block_align <= 0) {
av_log(avctx, AV_LOG_ERROR, "unsupported block align\n");
return AVERROR_PATCHWELCOME;
}
ractx->fdsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT);
if (!ractx->fdsp)
return AVERROR(ENOMEM);
return 0;
}
static av_cold int dsp_init(AVCodecContext *avctx, AACEncContext *s)
{
int ret = 0;
s->fdsp = avpriv_float_dsp_alloc(avctx->flags & AV_CODEC_FLAG_BITEXACT);
if (!s->fdsp)
return AVERROR(ENOMEM);
// window init
ff_kbd_window_init(ff_aac_kbd_long_1024, 4.0, 1024);
ff_kbd_window_init(ff_aac_kbd_short_128, 6.0, 128);
ff_init_ff_sine_windows(10);
ff_init_ff_sine_windows(7);
if ((ret = ff_mdct_init(&s->mdct1024, 11, 0, 32768.0)) < 0)
return ret;
if ((ret = ff_mdct_init(&s->mdct128, 8, 0, 32768.0)) < 0)
return ret;
return 0;
}
static av_cold int opus_decode_init(AVCodecContext *avctx)
{
OpusContext *c = avctx->priv_data;
int ret, i, j;
avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
avctx->sample_rate = 48000;
c->fdsp = avpriv_float_dsp_alloc(0);
if (!c->fdsp)
return AVERROR(ENOMEM);
/* find out the channel configuration */
ret = ff_opus_parse_extradata(avctx, c);
if (ret < 0) {
av_freep(&c->fdsp);
return ret;
}
/* allocate and init each independent decoder */
c->streams = av_mallocz_array(c->nb_streams, sizeof(*c->streams));
c->out = av_mallocz_array(c->nb_streams, 2 * sizeof(*c->out));
c->out_size = av_mallocz_array(c->nb_streams, sizeof(*c->out_size));
c->sync_buffers = av_mallocz_array(c->nb_streams, sizeof(*c->sync_buffers));
c->decoded_samples = av_mallocz_array(c->nb_streams, sizeof(*c->decoded_samples));
if (!c->streams || !c->sync_buffers || !c->decoded_samples || !c->out || !c->out_size) {
c->nb_streams = 0;
ret = AVERROR(ENOMEM);
goto fail;
}
for (i = 0; i < c->nb_streams; i++) {
OpusStreamContext *s = &c->streams[i];
uint64_t layout;
s->output_channels = (i < c->nb_stereo_streams) ? 2 : 1;
s->avctx = avctx;
for (j = 0; j < s->output_channels; j++) {
s->silk_output[j] = s->silk_buf[j];
s->celt_output[j] = s->celt_buf[j];
s->redundancy_output[j] = s->redundancy_buf[j];
}
s->fdsp = c->fdsp;
s->swr =swr_alloc();
if (!s->swr)
goto fail;
layout = (s->output_channels == 1) ? AV_CH_LAYOUT_MONO : AV_CH_LAYOUT_STEREO;
av_opt_set_int(s->swr, "in_sample_fmt", avctx->sample_fmt, 0);
av_opt_set_int(s->swr, "out_sample_fmt", avctx->sample_fmt, 0);
av_opt_set_int(s->swr, "in_channel_layout", layout, 0);
av_opt_set_int(s->swr, "out_channel_layout", layout, 0);
av_opt_set_int(s->swr, "out_sample_rate", avctx->sample_rate, 0);
av_opt_set_int(s->swr, "filter_size", 16, 0);
ret = ff_silk_init(avctx, &s->silk, s->output_channels);
if (ret < 0)
goto fail;
ret = ff_celt_init(avctx, &s->celt, s->output_channels);
if (ret < 0)
goto fail;
s->celt_delay = av_audio_fifo_alloc(avctx->sample_fmt,
s->output_channels, 1024);
if (!s->celt_delay) {
ret = AVERROR(ENOMEM);
goto fail;
}
c->sync_buffers[i] = av_audio_fifo_alloc(avctx->sample_fmt,
s->output_channels, 32);
if (!c->sync_buffers[i]) {
ret = AVERROR(ENOMEM);
goto fail;
}
}
return 0;
fail:
opus_decode_close(avctx);
return ret;
}
