diff options
Diffstat (limited to 'libavresample/audio_mix_matrix.c')
| -rw-r--r-- | libavresample/audio_mix_matrix.c | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/libavresample/audio_mix_matrix.c b/libavresample/audio_mix_matrix.c index 01a93367ef..8da1b487a4 100644 --- a/libavresample/audio_mix_matrix.c +++ b/libavresample/audio_mix_matrix.c @@ -287,115 +287,3 @@ int avresample_build_matrix(uint64_t in_layout, uint64_t out_layout, return 0; } - -int avresample_get_matrix(AVAudioResampleContext *avr, double *matrix, - int stride) -{ - int in_channels, out_channels, i, o; - - in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout); - out_channels = av_get_channel_layout_nb_channels(avr->out_channel_layout); - - if ( in_channels <= 0 || in_channels > AVRESAMPLE_MAX_CHANNELS || - out_channels <= 0 || out_channels > AVRESAMPLE_MAX_CHANNELS) { - av_log(avr, AV_LOG_ERROR, "Invalid channel layouts\n"); - return AVERROR(EINVAL); - } - - switch (avr->mix_coeff_type) { - case AV_MIX_COEFF_TYPE_Q8: - if (!avr->am->matrix_q8[0]) { - av_log(avr, AV_LOG_ERROR, "matrix is not set\n"); - return AVERROR(EINVAL); - } - for (o = 0; o < out_channels; o++) - for (i = 0; i < in_channels; i++) - matrix[o * stride + i] = avr->am->matrix_q8[o][i] / 256.0; - break; - case AV_MIX_COEFF_TYPE_Q15: - if (!avr->am->matrix_q15[0]) { - av_log(avr, AV_LOG_ERROR, "matrix is not set\n"); - return AVERROR(EINVAL); - } - for (o = 0; o < out_channels; o++) - for (i = 0; i < in_channels; i++) - matrix[o * stride + i] = avr->am->matrix_q15[o][i] / 32768.0; - break; - case AV_MIX_COEFF_TYPE_FLT: - if (!avr->am->matrix_flt[0]) { - av_log(avr, AV_LOG_ERROR, "matrix is not set\n"); - return AVERROR(EINVAL); - } - for (o = 0; o < out_channels; o++) - for (i = 0; i < in_channels; i++) - matrix[o * stride + i] = avr->am->matrix_flt[o][i]; - break; - default: - av_log(avr, AV_LOG_ERROR, "Invalid mix coeff type\n"); - return AVERROR(EINVAL); - } - - return 0; -} - -int avresample_set_matrix(AVAudioResampleContext *avr, const double *matrix, - int stride) -{ - int in_channels, out_channels, i, o; - - in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout); - out_channels = av_get_channel_layout_nb_channels(avr->out_channel_layout); - - if ( in_channels <= 0 || in_channels > AVRESAMPLE_MAX_CHANNELS || - out_channels <= 0 || out_channels > AVRESAMPLE_MAX_CHANNELS) { - av_log(avr, AV_LOG_ERROR, "Invalid channel layouts\n"); - return AVERROR(EINVAL); - } - - if (avr->am->matrix) { - av_free(avr->am->matrix[0]); - avr->am->matrix = NULL; - } - -#define CONVERT_MATRIX(type, expr) \ - avr->am->matrix_## type[0] = av_mallocz(out_channels * in_channels * \ - sizeof(*avr->am->matrix_## type[0])); \ - if (!avr->am->matrix_## type[0]) \ - return AVERROR(ENOMEM); \ - for (o = 0; o < out_channels; o++) { \ - if (o > 0) \ - avr->am->matrix_## type[o] = avr->am->matrix_## type[o - 1] + \ - in_channels; \ - for (i = 0; i < in_channels; i++) { \ - double v = matrix[o * stride + i]; \ - avr->am->matrix_## type[o][i] = expr; \ - } \ - } \ - avr->am->matrix = (void **)avr->am->matrix_## type; - - switch (avr->mix_coeff_type) { - case AV_MIX_COEFF_TYPE_Q8: - CONVERT_MATRIX(q8, av_clip_int16(lrint(256.0 * v))) - break; - case AV_MIX_COEFF_TYPE_Q15: - CONVERT_MATRIX(q15, av_clipl_int32(llrint(32768.0 * v))) - break; - case AV_MIX_COEFF_TYPE_FLT: - CONVERT_MATRIX(flt, v) - break; - default: - av_log(avr, AV_LOG_ERROR, "Invalid mix coeff type\n"); - return AVERROR(EINVAL); - } - - /* TODO: detect situations where we can just swap around pointers - instead of doing matrix multiplications with 0.0 and 1.0 */ - - /* set AudioMix params */ - avr->am->in_layout = avr->in_channel_layout; - avr->am->out_layout = avr->out_channel_layout; - avr->am->in_channels = in_channels; - avr->am->out_channels = out_channels; - - return 0; -} |