obs-studio/libobs/media-io/audio-resampler.h
jp9000 6c92cf5841 Implement output, improve video/audio subsystems
- Fill in the rest of the FFmpeg test output code for testing so it
   actually properly outputs data.

 - Improve the main video subsystem to be a bit more optimal and
   automatically output I420 or NV12 if needed.

 - Fix audio subsystem insertation and byte calculation.  Now it will
   seamlessly insert new audio data in to the audio stream based upon
   its timestamp value.  (Be extremely cautious when using floating
   point calculations for important things like this, and always round
   your values and check your values)

 - Use 32 byte alignment in case of future optimizations and export a
   function to get the current alignment.

 - Make os_sleepto_ns return true if slept, false if the time has
   already been passed before the call.

 - Fix sinewave output so that it actually properly calculates a middle
   C sinewave.

 - Change the use of row_bytes to linesize (also makes it a bit more
   consistent with FFmpeg's naming as well)
2014-02-09 05:51:06 -07:00

47 lines
1.5 KiB
C

/******************************************************************************
Copyright (C) 2013 by Hugh Bailey <obs.jim@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/
#pragma once
#include "../util/c99defs.h"
#include "audio-io.h"
#ifdef __cplusplus
extern "C" {
#endif
struct audio_resampler;
typedef struct audio_resampler *audio_resampler_t;
struct resample_info {
uint32_t samples_per_sec;
enum audio_format format;
enum speaker_layout speakers;
};
EXPORT audio_resampler_t audio_resampler_create(const struct resample_info *dst,
const struct resample_info *src);
EXPORT void audio_resampler_destroy(audio_resampler_t resampler);
EXPORT bool audio_resampler_resample(audio_resampler_t resampler,
uint8_t *output[], uint32_t *out_frames, uint64_t *ts_offset,
const uint8_t *const input[], uint32_t in_frames);
#ifdef __cplusplus
}
#endif