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Extend the behavior of avcodec_get_pix_fmt(), if it cannot find a

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pixel format for the provided name, make it look for the native endian
variant of the name.

Originally committed as revision 18130 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2009-03-21 22:43:46 +00:00
parent a61ec8e7ae
commit d89f692f0e
2 changed files with 32 additions and 2 deletions
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14
libavcodec/avcodec.h
View File

@ -31,7 +31,7 @@
#define LIBAVCODEC_VERSION_MAJOR 52
#define LIBAVCODEC_VERSION_MINOR 22
#define LIBAVCODEC_VERSION_MICRO 1
#define LIBAVCODEC_VERSION_MICRO 2
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
@ -2708,6 +2708,18 @@ int avpicture_get_size(enum PixelFormat pix_fmt, int width, int height);
void avcodec_get_chroma_sub_sample(enum PixelFormat pix_fmt, int *h_shift, int *v_shift);
const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt);
void avcodec_set_dimensions(AVCodecContext *s, int width, int height);
/**
* Returns the pixel format corresponding to the name \p name.
*
* If there is no pixel format with name \p name, then looks for a
* pixel format with the name corresponding to the native endian
* format of \p name.
* For example in a little-endian system, first looks for "gray16",
* then for "gray16le".
*
* Finally if no pixel format has been found, returns \c PIX_FMT_NONE.
*/
enum PixelFormat avcodec_get_pix_fmt(const char* name);
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);

20
libavcodec/imgconvert.c
View File

@ -457,7 +457,7 @@ const char *avcodec_get_pix_fmt_name(enum PixelFormat pix_fmt)
return pix_fmt_info[pix_fmt].name;
}
enum PixelFormat avcodec_get_pix_fmt(const char* name)
static enum PixelFormat avcodec_get_pix_fmt_internal(const char *name)
{
int i;
@ -467,6 +467,24 @@ enum PixelFormat avcodec_get_pix_fmt(const char* name)
return PIX_FMT_NONE;
}
enum PixelFormat avcodec_get_pix_fmt(const char *name)
{
#ifdef WORDS_BIGENDIAN
# define NE "be"
#else
# define NE "le"
#endif
enum PixelFormat pix_fmt = avcodec_get_pix_fmt_internal(name);
if (pix_fmt == PIX_FMT_NONE) {
char name2[32];
snprintf(name2, sizeof(name2), "%s%s", name, NE);
pix_fmt = avcodec_get_pix_fmt_internal(name2);
}
return pix_fmt;
#undef NE
}
void avcodec_pix_fmt_string (char *buf, int buf_size, enum PixelFormat pix_fmt)
{
/* print header */