Module: libav Branch: master Commit: f1c2915ce1ea36782e0aebd108cd48db53b03c8b
Author: Justin Ruggles <[email protected]> Committer: Justin Ruggles <[email protected]> Date: Thu Nov 29 20:58:05 2012 -0500 lavr: remove automatic context close/open for resampling compensation It adds unnecessary complication for insignificant usability improvement. The user really should know if they'll need resampling compensation before opening the context. Note that only the documentation has changed. The current functionality will still work until the next major bump. --- libavresample/avresample.h | 9 ++++----- libavresample/resample.c | 9 +++++++-- libavresample/version.h | 4 ++++ 3 files changed, 15 insertions(+), 7 deletions(-) diff --git a/libavresample/avresample.h b/libavresample/avresample.h index a73d686..4841d26 100644 --- a/libavresample/avresample.h +++ b/libavresample/avresample.h @@ -252,11 +252,10 @@ int avresample_set_matrix(AVAudioResampleContext *avr, const double *matrix, /** * Set compensation for resampling. * - * This can be called anytime after avresample_open(). If resampling was not - * being done previously, the AVAudioResampleContext is closed and reopened - * with resampling enabled. In this case, any samples remaining in the output - * FIFO and the current channel mixing matrix will be restored after reopening - * the context. + * This can be called anytime after avresample_open(). If resampling is not + * automatically enabled because of a sample rate conversion, the + * "force_resampling" option must have been set to 1 when opening the context + * in order to use resampling compensation. * * @param avr audio resample context * @param sample_delta compensation delta, in samples diff --git a/libavresample/resample.c b/libavresample/resample.c index 15eaa50..dc121fe 100644 --- a/libavresample/resample.c +++ b/libavresample/resample.c @@ -255,9 +255,10 @@ int avresample_set_compensation(AVAudioResampleContext *avr, int sample_delta, if (!compensation_distance && sample_delta) return AVERROR(EINVAL); - /* if resampling was not enabled previously, re-initialize the - AVAudioResampleContext and force resampling */ if (!avr->resample_needed) { +#if FF_API_RESAMPLE_CLOSE_OPEN + /* if resampling was not enabled previously, re-initialize the + AVAudioResampleContext and force resampling */ int fifo_samples; int restore_matrix = 0; double matrix[AVRESAMPLE_MAX_CHANNELS * AVRESAMPLE_MAX_CHANNELS] = { 0 }; @@ -307,6 +308,10 @@ int avresample_set_compensation(AVAudioResampleContext *avr, int sample_delta, goto reinit_fail; ff_audio_data_free(&fifo_buf); } +#else + av_log(avr, AV_LOG_ERROR, "Unable to set resampling compensation\n"); + return AVERROR(EINVAL); +#endif } c = avr->resample; c->compensation_distance = compensation_distance; diff --git a/libavresample/version.h b/libavresample/version.h index 53ba802..834c942 100644 --- a/libavresample/version.h +++ b/libavresample/version.h @@ -39,4 +39,8 @@ * the public API and may change, break or disappear at any time. */ +#ifndef FF_API_RESAMPLE_CLOSE_OPEN +#define FF_API_RESAMPLE_CLOSE_OPEN (LIBAVRESAMPLE_VERSION_MAJOR < 2) +#endif + #endif /* AVRESAMPLE_VERSION_H */ _______________________________________________ libav-commits mailing list [email protected] https://lists.libav.org/mailman/listinfo/libav-commits
