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avcodec_alloc_context()

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Originally committed as revision 954 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2002-09-19 09:13:43 +00:00
parent 947ac25a44
commit a949d72e0e
2 changed files with 28 additions and 4 deletions
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11
libavcodec/avcodec.h
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@ -5,8 +5,8 @@
#define LIBAVCODEC_VERSION_INT 0x000406 #define LIBAVCODEC_VERSION_INT 0x000406
#define LIBAVCODEC_VERSION "0.4.6" #define LIBAVCODEC_VERSION "0.4.6"
#define LIBAVCODEC_BUILD 4623 #define LIBAVCODEC_BUILD 4624
#define LIBAVCODEC_BUILD_STR "4623" #define LIBAVCODEC_BUILD_STR "4624"
enum CodecID { enum CodecID {
CODEC_ID_NONE, CODEC_ID_NONE,
@ -100,8 +100,10 @@ static const int Motion_Est_QTab[] = { ME_ZERO, ME_PHODS, ME_LOG,
#define FF_MAX_B_FRAMES 4 #define FF_MAX_B_FRAMES 4
/* encoding support */ /* encoding support
/* note not everything is supported yet */ these flags can be passed in AVCodecContext.flags before initing
Note: note not everything is supported yet
*/
#define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */ #define CODEC_FLAG_HQ 0x0001 /* high quality (non real time) encoding */
#define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */ #define CODEC_FLAG_QSCALE 0x0002 /* use fixed qscale */
@ -514,6 +516,7 @@ AVCodec *avcodec_find_decoder(enum CodecID id);
AVCodec *avcodec_find_decoder_by_name(const char *name); AVCodec *avcodec_find_decoder_by_name(const char *name);
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode); void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode);
AVCodecContext *avcodec_alloc_context();
int avcodec_open(AVCodecContext *avctx, AVCodec *codec); int avcodec_open(AVCodecContext *avctx, AVCodec *codec);
int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples, int avcodec_decode_audio(AVCodecContext *avctx, INT16 *samples,
int *frame_size_ptr, int *frame_size_ptr,

21
libavcodec/utils.c
View File

@ -49,6 +49,27 @@ void register_avcodec(AVCodec *format)
format->next = NULL; format->next = NULL;
} }
void avcodec_get_context_defaults(AVCodecContext *s){
s->qmin= 2;
s->qmax= 31;
s->rc_eq= "tex^qComp";
s->qcompress= 0.5;
}
/**
* allocates a AVCodecContext and set it to defaults.
* this can be deallocated by simply calling free()
*/
AVCodecContext *avcodec_alloc_context(){
AVCodecContext *avctx= av_mallocz(sizeof(AVCodecContext));
if(avctx==NULL) return NULL;
avcodec_get_context_defaults(avctx);
return avctx;
}
int avcodec_open(AVCodecContext *avctx, AVCodec *codec) int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
{ {
int ret; int ret;