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Move the unaltered documentation of the functions which are part of the public

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API out of imgconvert.c into avcodec.h.

Originally committed as revision 8121 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Panagiotis Issaris 2007-02-25 07:53:44 +00:00
parent 0268a54a65
commit 392cf77a4b
2 changed files with 48 additions and 46 deletions
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48
libavcodec/avcodec.h
View File

@ -2451,10 +2451,36 @@ int avpicture_alloc(AVPicture *picture, int pix_fmt, int width, int height);
*/ */
void avpicture_free(AVPicture *picture); void avpicture_free(AVPicture *picture);
/**
* Fill in AVPicture's fields.
* The fields of the given AVPicture are filled in by using the 'ptr' address
* which points to the image data buffer. Depending on the specified picture
* format, one or multiple image data pointers and line sizes will be set.
* If a planar format is specified, several pointers will be set pointing to
* the different picture planes and the line sizes of the different planes
* will be stored in the lines_sizes array.
*
* @param picture AVPicture who's fields are to be filled in
* @param ptr Buffer which will contain or contains the actual image data
* @param pix_fmt The format in which the picture data is stored
* @param width The width of the image in pixels
* @param height The height of the image in pixels
* @return Size of the image data in bytes.
*/
int avpicture_fill(AVPicture *picture, uint8_t *ptr, int avpicture_fill(AVPicture *picture, uint8_t *ptr,
int pix_fmt, int width, int height); int pix_fmt, int width, int height);
int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height, int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
unsigned char *dest, int dest_size); unsigned char *dest, int dest_size);
/**
* Calculate the size in bytes that a picture of the given width and height
* would occupy if stored in the given picture format.
*
* @param pix_fmt The given picture format
* @param width The width of the image
* @param height The height of the image
* @return Image data size in bytes
*/
int avpicture_get_size(int pix_fmt, int width, int height); int avpicture_get_size(int pix_fmt, int width, int height);
void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift); void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift);
const char *avcodec_get_pix_fmt_name(int pix_fmt); const char *avcodec_get_pix_fmt_name(int pix_fmt);
@ -2469,13 +2495,25 @@ unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat p);
#define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */ #define FF_LOSS_COLORQUANT 0x0010 /* loss due to color quantization */
#define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */ #define FF_LOSS_CHROMA 0x0020 /* loss of chroma (e.g. rgb to gray conversion) */
/**
* compute the loss when converting from a pixel format to another
*/
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt, int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
int has_alpha); int has_alpha);
/**
* find best pixel format to convert to. Return -1 if none found
*/
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt, int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
int has_alpha, int *loss_ptr); int has_alpha, int *loss_ptr);
#define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */ #define FF_ALPHA_TRANSP 0x0001 /* image has some totally transparent pixels */
#define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */ #define FF_ALPHA_SEMI_TRANSP 0x0002 /* image has some transparent pixels */
/**
* Tell if an image really has transparent alpha values.
* @return ored mask of FF_ALPHA_xxx constants
*/
int img_get_alpha_info(const AVPicture *src, int img_get_alpha_info(const AVPicture *src,
int pix_fmt, int width, int height); int pix_fmt, int width, int height);
@ -2487,6 +2525,7 @@ attribute_deprecated int img_convert(AVPicture *dst, int dst_pix_fmt,
#endif #endif
/* deinterlace a picture */ /* deinterlace a picture */
/* deinterlace - if not supported return -1 */
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src, int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
int pix_fmt, int width, int height); int pix_fmt, int width, int height);
@ -2921,12 +2960,21 @@ void av_free_static(void);
*/ */
void *av_mallocz_static(unsigned int size); void *av_mallocz_static(unsigned int size);
/**
* Copy image 'src' to 'dst'.
*/
void img_copy(AVPicture *dst, const AVPicture *src, void img_copy(AVPicture *dst, const AVPicture *src,
int pix_fmt, int width, int height); int pix_fmt, int width, int height);
/**
* Crop image top and left side
*/
int img_crop(AVPicture *dst, const AVPicture *src, int img_crop(AVPicture *dst, const AVPicture *src,
int pix_fmt, int top_band, int left_band); int pix_fmt, int top_band, int left_band);
/**
* Pad image
*/
int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt, int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int pix_fmt,
int padtop, int padbottom, int padleft, int padright, int *color); int padtop, int padbottom, int padleft, int padright, int *color);

46
libavcodec/imgconvert.c
View File

@ -382,22 +382,6 @@ enum PixelFormat avcodec_get_pix_fmt(const char* name)
return i; return i;
} }
/**
* Fill in AVPicture's fields.
* The fields of the given AVPicture are filled in by using the 'ptr' address
* which points to the image data buffer. Depending on the specified picture
* format, one or multiple image data pointers and line sizes will be set.
* If a planar format is specified, several pointers will be set pointing to
* the different picture planes and the line sizes of the different planes
* will be stored in the lines_sizes array.
*
* @param picture AVPicture who's fields are to be filled in
* @param ptr Buffer which will contain or contains the actual image data
* @param pix_fmt The format in which the picture data is stored
* @param width The width of the image in pixels
* @param height The height of the image in pixels
* @return Size of the image data in bytes.
*/
int avpicture_fill(AVPicture *picture, uint8_t *ptr, int avpicture_fill(AVPicture *picture, uint8_t *ptr,
int pix_fmt, int width, int height) int pix_fmt, int width, int height)
{ {
@ -575,24 +559,12 @@ int avpicture_layout(const AVPicture* src, int pix_fmt, int width, int height,
return size; return size;
} }
/**
* Calculate the size in bytes that a picture of the given width and height
* would occupy if stored in the given picture format.
*
* @param pix_fmt The given picture format
* @param width The width of the image
* @param height The height of the image
* @return Image data size in bytes
*/
int avpicture_get_size(int pix_fmt, int width, int height) int avpicture_get_size(int pix_fmt, int width, int height)
{ {
AVPicture dummy_pict; AVPicture dummy_pict;
return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height); return avpicture_fill(&dummy_pict, NULL, pix_fmt, width, height);
} }
/**
* compute the loss when converting from a pixel format to another
*/
int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt, int avcodec_get_pix_fmt_loss(int dst_pix_fmt, int src_pix_fmt,
int has_alpha) int has_alpha)
{ {
@ -716,9 +688,6 @@ static int avcodec_find_best_pix_fmt1(int pix_fmt_mask,
return dst_pix_fmt; return dst_pix_fmt;
} }
/**
* find best pixel format to convert to. Return -1 if none found
*/
int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt, int avcodec_find_best_pix_fmt(int pix_fmt_mask, int src_pix_fmt,
int has_alpha, int *loss_ptr) int has_alpha, int *loss_ptr)
{ {
@ -764,9 +733,6 @@ void ff_img_copy_plane(uint8_t *dst, int dst_wrap,
} }
} }
/**
* Copy image 'src' to 'dst'.
*/
void img_copy(AVPicture *dst, const AVPicture *src, void img_copy(AVPicture *dst, const AVPicture *src,
int pix_fmt, int width, int height) int pix_fmt, int width, int height)
{ {
@ -2248,9 +2214,6 @@ static inline int is_yuv_planar(const PixFmtInfo *ps)
ps->pixel_type == FF_PIXEL_PLANAR; ps->pixel_type == FF_PIXEL_PLANAR;
} }
/**
* Crop image top and left side
*/
int img_crop(AVPicture *dst, const AVPicture *src, int img_crop(AVPicture *dst, const AVPicture *src,
int pix_fmt, int top_band, int left_band) int pix_fmt, int top_band, int left_band)
{ {
@ -2273,9 +2236,6 @@ int img_crop(AVPicture *dst, const AVPicture *src,
return 0; return 0;
} }
/**
* Pad image
*/
int img_pad(AVPicture *dst, const AVPicture *src, int height, int width, int img_pad(AVPicture *dst, const AVPicture *src, int height, int width,
int pix_fmt, int padtop, int padbottom, int padleft, int padright, int pix_fmt, int padtop, int padbottom, int padleft, int padright,
int *color) int *color)
@ -2606,10 +2566,6 @@ static int get_alpha_info_pal8(const AVPicture *src, int width, int height)
return ret; return ret;
} }
/**
* Tell if an image really has transparent alpha values.
* @return ored mask of FF_ALPHA_xxx constants
*/
int img_get_alpha_info(const AVPicture *src, int img_get_alpha_info(const AVPicture *src,
int pix_fmt, int width, int height) int pix_fmt, int width, int height)
{ {
@ -2829,8 +2785,6 @@ static void deinterlace_bottom_field_inplace(uint8_t *src1, int src_wrap,
av_free(buf); av_free(buf);
} }
/* deinterlace - if not supported return -1 */
int avpicture_deinterlace(AVPicture *dst, const AVPicture *src, int avpicture_deinterlace(AVPicture *dst, const AVPicture *src,
int pix_fmt, int width, int height) int pix_fmt, int width, int height)
{ {