virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-04-24 17:12:34 +02:00
Code Issues Releases Activity

lavr: fix handling of custom mix matrices

Browse Source 
Adds some validation for changing parameters after setting the matrix and
fixes a bug in the conversion path setup.
This commit is contained in:
Justin Ruggles 2012-07-29 19:22:19 -04:00
parent 73486e3b61
commit 8821ae649e
3 changed files with 26 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
libavresample/audio_mix.c
View File

@ -314,7 +314,15 @@ int ff_audio_mix_init(AVAudioResampleContext *avr)
} }
/* build matrix if the user did not already set one */ /* build matrix if the user did not already set one */
if (!avr->am->matrix) { if (avr->am->matrix) {
if (avr->am->coeff_type != avr->mix_coeff_type ||
avr->am->in_layout != avr->in_channel_layout ||
avr->am->out_layout != avr->out_channel_layout) {
av_log(avr, AV_LOG_ERROR,
"Custom matrix does not match current parameters\n");
return AVERROR(EINVAL);
}
} else {
int i, j; int i, j;
char in_layout_name[128]; char in_layout_name[128];
char out_layout_name[128]; char out_layout_name[128];

21
libavresample/audio_mix_matrix.c
View File

@ -294,8 +294,8 @@ int avresample_get_matrix(AVAudioResampleContext *avr, double *matrix,
in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout); in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout);
out_channels = av_get_channel_layout_nb_channels(avr->out_channel_layout); out_channels = av_get_channel_layout_nb_channels(avr->out_channel_layout);
if ( in_channels < 0 || in_channels > AVRESAMPLE_MAX_CHANNELS || if ( in_channels <= 0 || in_channels > AVRESAMPLE_MAX_CHANNELS ||
out_channels < 0 || out_channels > AVRESAMPLE_MAX_CHANNELS) { out_channels <= 0 || out_channels > AVRESAMPLE_MAX_CHANNELS) {
av_log(avr, AV_LOG_ERROR, "Invalid channel layouts\n"); av_log(avr, AV_LOG_ERROR, "Invalid channel layouts\n");
return AVERROR(EINVAL); return AVERROR(EINVAL);
} }
@ -332,6 +332,7 @@ int avresample_get_matrix(AVAudioResampleContext *avr, double *matrix,
av_log(avr, AV_LOG_ERROR, "Invalid mix coeff type\n"); av_log(avr, AV_LOG_ERROR, "Invalid mix coeff type\n");
return AVERROR(EINVAL); return AVERROR(EINVAL);
} }
return 0; return 0;
} }
@ -343,14 +344,16 @@ int avresample_set_matrix(AVAudioResampleContext *avr, const double *matrix,
in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout); in_channels = av_get_channel_layout_nb_channels(avr->in_channel_layout);
out_channels = av_get_channel_layout_nb_channels(avr->out_channel_layout); out_channels = av_get_channel_layout_nb_channels(avr->out_channel_layout);
if ( in_channels < 0 || in_channels > AVRESAMPLE_MAX_CHANNELS || if ( in_channels <= 0 || in_channels > AVRESAMPLE_MAX_CHANNELS ||
out_channels < 0 || out_channels > AVRESAMPLE_MAX_CHANNELS) { out_channels <= 0 || out_channels > AVRESAMPLE_MAX_CHANNELS) {
av_log(avr, AV_LOG_ERROR, "Invalid channel layouts\n"); av_log(avr, AV_LOG_ERROR, "Invalid channel layouts\n");
return AVERROR(EINVAL); return AVERROR(EINVAL);
} }
if (avr->am->matrix) if (avr->am->matrix) {
av_freep(avr->am->matrix); av_free(avr->am->matrix[0]);
avr->am->matrix = NULL;
}
#define CONVERT_MATRIX(type, expr) \ #define CONVERT_MATRIX(type, expr) \
avr->am->matrix_## type[0] = av_mallocz(out_channels * in_channels * \ avr->am->matrix_## type[0] = av_mallocz(out_channels * in_channels * \
@ -386,5 +389,11 @@ int avresample_set_matrix(AVAudioResampleContext *avr, const double *matrix,
/* TODO: detect situations where we can just swap around pointers /* TODO: detect situations where we can just swap around pointers
instead of doing matrix multiplications with 0.0 and 1.0 */ 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; return 0;
} }

5
libavresample/utils.c
View File

@ -48,9 +48,8 @@ int avresample_open(AVAudioResampleContext *avr)
avr->resample_channels = FFMIN(avr->in_channels, avr->out_channels); avr->resample_channels = FFMIN(avr->in_channels, avr->out_channels);
avr->downmix_needed = avr->in_channels > avr->out_channels; avr->downmix_needed = avr->in_channels > avr->out_channels;
avr->upmix_needed = avr->out_channels > avr->in_channels || avr->upmix_needed = avr->out_channels > avr->in_channels ||
avr->am->matrix || (!avr->downmix_needed && (avr->am->matrix ||
(avr->out_channels == avr->in_channels && avr->in_channel_layout != avr->out_channel_layout));
avr->in_channel_layout != avr->out_channel_layout);
avr->mixing_needed = avr->downmix_needed || avr->upmix_needed; avr->mixing_needed = avr->downmix_needed || avr->upmix_needed;
/* set resampling parameters */ /* set resampling parameters */