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Code Issues Releases Activity

avfilter/af_sofalizer: make it possible to configure speaker elevation

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol 2015-12-13 01:11:26 +01:00
parent 93d336fb07
commit e6258677ee
1 changed files with 81 additions and 74 deletions
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155
libavfilter/af_sofalizer.c
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@ -55,7 +55,8 @@ typedef struct SOFAlizerContext {
const int8_t *reorder; /* reorder in SOFA channel order */ const int8_t *reorder; /* reorder in SOFA channel order */
int sample_rate; /* sample rate from SOFA file */ int sample_rate; /* sample rate from SOFA file */
float *speaker_pos; /* positions of the virtual loudspekaers */ float *speaker_azim; /* azimuth of the virtual loudspeakers */
float *speaker_elev; /* elevation of the virtual loudspeakers */
float gain_lfe; /* gain applied to LFE channel */ float gain_lfe; /* gain applied to LFE channel */
int n_conv; /* number of channels to convolute */ int n_conv; /* number of channels to convolute */
@ -373,11 +374,13 @@ static const int8_t reorder[18][9] = {
{ 0, 1, 4, 5, 2, 6, 3, -1, -1 }, { 0, 1, 4, 5, 2, 6, 3, -1, -1 },
}; };
static int get_speaker_pos(AVFilterContext *ctx, float *speaker_pos) static int get_speaker_pos(AVFilterContext *ctx,
float *speaker_azim, float *speaker_elev)
{ {
struct SOFAlizerContext *s = ctx->priv; struct SOFAlizerContext *s = ctx->priv;
uint64_t channels_layout = ctx->inputs[0]->channel_layout; uint64_t channels_layout = ctx->inputs[0]->channel_layout;
float pos_temp[9]; float azim[9] = { 0 };
float elev[9] = { 0 };
int nb_input_channels = ctx->inputs[0]->channels; /* get no. input channels */ int nb_input_channels = ctx->inputs[0]->channels; /* get no. input channels */
int n_conv = nb_input_channels; int n_conv = nb_input_channels;
@ -389,103 +392,103 @@ static int get_speaker_pos(AVFilterContext *ctx, float *speaker_pos)
/* set speaker positions according to input channel configuration: */ /* set speaker positions according to input channel configuration: */
switch (channels_layout) { switch (channels_layout) {
case AV_CH_LAYOUT_MONO: case AV_CH_LAYOUT_MONO:
pos_temp[0] = 0; azim[0] = 0;
break; break;
case AV_CH_LAYOUT_STEREO: case AV_CH_LAYOUT_STEREO:
case AV_CH_LAYOUT_2POINT1: case AV_CH_LAYOUT_2POINT1:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
break; break;
case AV_CH_LAYOUT_SURROUND: case AV_CH_LAYOUT_SURROUND:
case AV_CH_LAYOUT_3POINT1: case AV_CH_LAYOUT_3POINT1:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 0; azim[2] = 0;
break; break;
case AV_CH_LAYOUT_2_1: case AV_CH_LAYOUT_2_1:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 180; azim[2] = 180;
break; break;
case AV_CH_LAYOUT_2_2: case AV_CH_LAYOUT_2_2:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 90; azim[2] = 90;
pos_temp[3] = 270; azim[3] = 270;
break; break;
case AV_CH_LAYOUT_QUAD: case AV_CH_LAYOUT_QUAD:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 120; azim[2] = 120;
pos_temp[3] = 240; azim[3] = 240;
break; break;
case AV_CH_LAYOUT_4POINT0: case AV_CH_LAYOUT_4POINT0:
case AV_CH_LAYOUT_4POINT1: case AV_CH_LAYOUT_4POINT1:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 0; azim[2] = 0;
pos_temp[3] = 180; azim[3] = 180;
break; break;
case AV_CH_LAYOUT_5POINT0: case AV_CH_LAYOUT_5POINT0:
case AV_CH_LAYOUT_5POINT1: case AV_CH_LAYOUT_5POINT1:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 90; azim[2] = 90;
pos_temp[3] = 270; azim[3] = 270;
pos_temp[4] = 0; azim[4] = 0;
break; break;
case AV_CH_LAYOUT_5POINT0_BACK: case AV_CH_LAYOUT_5POINT0_BACK:
case AV_CH_LAYOUT_5POINT1_BACK: case AV_CH_LAYOUT_5POINT1_BACK:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 120; azim[2] = 120;
pos_temp[3] = 240; azim[3] = 240;
pos_temp[4] = 0; azim[4] = 0;
break; break;
case AV_CH_LAYOUT_6POINT0: case AV_CH_LAYOUT_6POINT0:
case AV_CH_LAYOUT_6POINT1: case AV_CH_LAYOUT_6POINT1:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 90; azim[2] = 90;
pos_temp[3] = 270; azim[3] = 270;
pos_temp[4] = 0; azim[4] = 0;
pos_temp[5] = 180; azim[5] = 180;
break; break;
case AV_CH_LAYOUT_6POINT1_BACK: case AV_CH_LAYOUT_6POINT1_BACK:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 120; azim[2] = 120;
pos_temp[3] = 240; azim[3] = 240;
pos_temp[4] = 0; azim[4] = 0;
pos_temp[4] = 180; azim[4] = 180;
break; break;
case AV_CH_LAYOUT_HEXAGONAL: case AV_CH_LAYOUT_HEXAGONAL:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 120; azim[2] = 120;
pos_temp[3] = 240; azim[3] = 240;
pos_temp[4] = 0; azim[4] = 0;
pos_temp[5] = 180; azim[5] = 180;
break; break;
case AV_CH_LAYOUT_7POINT0: case AV_CH_LAYOUT_7POINT0:
case AV_CH_LAYOUT_7POINT1: case AV_CH_LAYOUT_7POINT1:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 90; azim[2] = 90;
pos_temp[3] = 270; azim[3] = 270;
pos_temp[4] = 150; azim[4] = 150;
pos_temp[5] = 210; azim[5] = 210;
pos_temp[6] = 0; azim[6] = 0;
break; break;
case AV_CH_LAYOUT_OCTAGONAL: case AV_CH_LAYOUT_OCTAGONAL:
pos_temp[0] = 30; azim[0] = 30;
pos_temp[1] = 330; azim[1] = 330;
pos_temp[2] = 0; azim[2] = 0;
pos_temp[3] = 150; azim[3] = 150;
pos_temp[4] = 210; azim[4] = 210;
pos_temp[5] = 180; azim[5] = 180;
pos_temp[6] = 90; azim[6] = 90;
pos_temp[7] = 270; azim[7] = 270;
break; break;
default: default:
return -1; return -1;
@ -551,7 +554,8 @@ static int get_speaker_pos(AVFilterContext *ctx, float *speaker_pos)
return -1; return -1;
} }
memcpy(speaker_pos, pos_temp, n_conv * sizeof(float)); memcpy(speaker_azim, azim, n_conv * sizeof(float));
memcpy(speaker_elev, elev, n_conv * sizeof(float));
return 0; return 0;
@ -818,7 +822,7 @@ static int load_data(AVFilterContext *ctx, int azim, int elev, float radius)
float *data_ir_r = NULL; float *data_ir_r = NULL;
int offset = 0; /* used for faster pointer arithmetics in for-loop */ int offset = 0; /* used for faster pointer arithmetics in for-loop */
int m[s->n_conv]; /* measurement index m of IR closest to required source positions */ int m[s->n_conv]; /* measurement index m of IR closest to required source positions */
int i, j, azim_orig = azim; int i, j, azim_orig = azim, elev_orig = elev;
if (!s->sofa.ncid) { /* if an invalid SOFA file has been selected */ if (!s->sofa.ncid) { /* if an invalid SOFA file has been selected */
av_log(ctx, AV_LOG_ERROR, "Selected SOFA file is invalid. Please select valid SOFA file.\n"); av_log(ctx, AV_LOG_ERROR, "Selected SOFA file is invalid. Please select valid SOFA file.\n");
@ -836,7 +840,8 @@ static int load_data(AVFilterContext *ctx, int azim, int elev, float radius)
for (i = 0; i < s->n_conv; i++) { for (i = 0; i < s->n_conv; i++) {
/* load and store IRs and corresponding delays */ /* load and store IRs and corresponding delays */
azim = (int)(s->speaker_pos[i] + azim_orig) % 360; azim = (int)(s->speaker_azim[i] + azim_orig) % 360;
elev = (int)(s->speaker_elev[i] + elev_orig) % 90;
/* get id of IR closest to desired position */ /* get id of IR closest to desired position */
m[i] = find_m(s, azim, elev, radius); m[i] = find_m(s, azim, elev, radius);
@ -956,18 +961,19 @@ static int config_input(AVFilterLink *inlink)
s->ringbuffer[0] = av_calloc(s->buffer_length, sizeof(float) * nb_input_channels); s->ringbuffer[0] = av_calloc(s->buffer_length, sizeof(float) * nb_input_channels);
s->ringbuffer[1] = av_calloc(s->buffer_length, sizeof(float) * nb_input_channels); s->ringbuffer[1] = av_calloc(s->buffer_length, sizeof(float) * nb_input_channels);
/* length: number of channels to convolute */ /* length: number of channels to convolute */
s->speaker_pos = av_malloc_array(s->n_conv, sizeof(*s->speaker_pos)); s->speaker_azim = av_calloc(s->n_conv, sizeof(*s->speaker_azim));
s->speaker_elev = av_calloc(s->n_conv, sizeof(*s->speaker_elev));
/* memory allocation failed: */ /* memory allocation failed: */
if (!s->data_ir[0] || !s->data_ir[1] || !s->delay[1] || if (!s->data_ir[0] || !s->data_ir[1] || !s->delay[1] ||
!s->delay[0] || !s->ringbuffer[0] || !s->ringbuffer[1] || !s->delay[0] || !s->ringbuffer[0] || !s->ringbuffer[1] ||
!s->speaker_pos) !s->speaker_azim || !s->speaker_elev)
return AVERROR(ENOMEM); return AVERROR(ENOMEM);
compensate_volume(ctx); compensate_volume(ctx);
/* get speaker positions */ /* get speaker positions */
if ((ret = get_speaker_pos(ctx, s->speaker_pos)) < 0) { if ((ret = get_speaker_pos(ctx, s->speaker_azim, s->speaker_elev)) < 0) {
av_log(ctx, AV_LOG_ERROR, "Couldn't get speaker positions. Input channel configuration not supported.\n"); av_log(ctx, AV_LOG_ERROR, "Couldn't get speaker positions. Input channel configuration not supported.\n");
return ret; return ret;
} }
@ -999,7 +1005,8 @@ static av_cold void uninit(AVFilterContext *ctx)
av_freep(&s->data_ir[1]); av_freep(&s->data_ir[1]);
av_freep(&s->ringbuffer[0]); av_freep(&s->ringbuffer[0]);
av_freep(&s->ringbuffer[1]); av_freep(&s->ringbuffer[1]);
av_freep(&s->speaker_pos); av_freep(&s->speaker_azim);
av_freep(&s->speaker_elev);
av_freep(&s->temp_src[0]); av_freep(&s->temp_src[0]);
av_freep(&s->temp_src[1]); av_freep(&s->temp_src[1]);
av_freep(&s->fdsp); av_freep(&s->fdsp);