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xav

0.3.0
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Elixir audio/video library built on top of FFmpeg

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xav c_src xav utils.h
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c_src/xav/utils.h 

#include <erl_nif.h>

#include <libavcodec/avcodec.h>

#include <libavdevice/avdevice.h>

#include <libavformat/avformat.h>

#include <libavutil/avutil.h>

#include <libavutil/imgutils.h>

#include <libswresample/swresample.h>

#include <libswscale/swscale.h>



#ifdef XAV_DEBUG

#define XAV_LOG_DEBUG(X, ...)                                                                      \

  fprintf(stderr, "[XAV DEBUG %s] %s:%d " X "\n", __TIME__, __FILE__, __LINE__, ##__VA_ARGS__)

#else

#define XAV_LOG_DEBUG(...)

#endif



#define XAV_ALLOC(X) enif_alloc(X)

#define XAV_FREE(X) enif_free(X)



void print_supported_pix_fmts(AVCodec *codec);

int init_swr_ctx_from_frame(SwrContext **swr_ctx, AVFrame *frame);

void convert_to_rgb(AVFrame *src_frame, uint8_t *dst_data[], int dst_linesize[]);

int convert_to_interleaved(SwrContext *swr_ctx, AVFrame *src_frame, uint8_t **dst_data,

                           int *dst_linesize);



ERL_NIF_TERM xav_nif_ok(ErlNifEnv *env, ERL_NIF_TERM data_term);

ERL_NIF_TERM xav_nif_error(ErlNifEnv *env, char *reason);

ERL_NIF_TERM xav_nif_raise(ErlNifEnv *env, char *msg);

ERL_NIF_TERM xav_nif_video_frame_to_term(ErlNifEnv *env, AVFrame *frame, unsigned char *data[],

                                         int *linesize, const char *out_format_name);

ERL_NIF_TERM xav_nif_audio_frame_to_term(ErlNifEnv *env, AVFrame *frame, unsigned char *data[],

                                         char *out_format_name);