diff options
Diffstat (limited to 'media/ffvpx/libavutil/imgutils.h')
| -rw-r--r-- | media/ffvpx/libavutil/imgutils.h | 70 |
1 files changed, 67 insertions, 3 deletions
diff --git a/media/ffvpx/libavutil/imgutils.h b/media/ffvpx/libavutil/imgutils.h index 23282a38f..5b790ecf0 100644 --- a/media/ffvpx/libavutil/imgutils.h +++ b/media/ffvpx/libavutil/imgutils.h @@ -121,6 +121,24 @@ void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height); /** + * Copy image data located in uncacheable (e.g. GPU mapped) memory. Where + * available, this function will use special functionality for reading from such + * memory, which may result in greatly improved performance compared to plain + * av_image_copy(). + * + * The data pointers and the linesizes must be aligned to the maximum required + * by the CPU architecture. + * + * @note The linesize parameters have the type ptrdiff_t here, while they are + * int for av_image_copy(). + * @note On x86, the linesizes currently need to be aligned to the cacheline + * size (i.e. 64) to get improved performance. + */ +void av_image_copy_uc_from(uint8_t *dst_data[4], const ptrdiff_t dst_linesizes[4], + const uint8_t *src_data[4], const ptrdiff_t src_linesizes[4], + enum AVPixelFormat pix_fmt, int width, int height); + +/** * Setup the data pointers and linesizes based on the specified image * parameters and the provided array. * @@ -137,7 +155,7 @@ void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], * one call, use av_image_alloc(). * * @param dst_data data pointers to be filled in - * @param dst_linesizes linesizes for the image in dst_data to be filled in + * @param dst_linesize linesizes for the image in dst_data to be filled in * @param src buffer which will contain or contains the actual image data, can be NULL * @param pix_fmt the pixel format of the image * @param width the width of the image in pixels @@ -154,7 +172,11 @@ int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4], * Return the size in bytes of the amount of data required to store an * image with the given parameters. * - * @param[in] align the assumed linesize alignment + * @param pix_fmt the pixel format of the image + * @param width the width of the image in pixels + * @param height the height of the image in pixels + * @param align the assumed linesize alignment + * @return the buffer size in bytes, a negative error code in case of failure */ int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, int align); @@ -167,7 +189,7 @@ int av_image_get_buffer_size(enum AVPixelFormat pix_fmt, int width, int height, * @param dst a buffer into which picture data will be copied * @param dst_size the size in bytes of dst * @param src_data pointers containing the source image data - * @param src_linesizes linesizes for the image in src_data + * @param src_linesize linesizes for the image in src_data * @param pix_fmt the pixel format of the source image * @param width the width of the source image in pixels * @param height the height of the source image in pixels @@ -192,6 +214,21 @@ int av_image_copy_to_buffer(uint8_t *dst, int dst_size, int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx); /** + * Check if the given dimension of an image is valid, meaning that all + * bytes of a plane of an image with the specified pix_fmt can be addressed + * with a signed int. + * + * @param w the width of the picture + * @param h the height of the picture + * @param max_pixels the maximum number of pixels the user wants to accept + * @param pix_fmt the pixel format, can be AV_PIX_FMT_NONE if unknown. + * @param log_offset the offset to sum to the log level for logging with log_ctx + * @param log_ctx the parent logging context, it may be NULL + * @return >= 0 if valid, a negative error code otherwise + */ +int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx); + +/** * Check if the given sample aspect ratio of an image is valid. * * It is considered invalid if the denominator is 0 or if applying the ratio @@ -206,6 +243,33 @@ int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *lo int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar); /** + * Overwrite the image data with black. This is suitable for filling a + * sub-rectangle of an image, meaning the padding between the right most pixel + * and the left most pixel on the next line will not be overwritten. For some + * formats, the image size might be rounded up due to inherent alignment. + * + * If the pixel format has alpha, the alpha is cleared to opaque. + * + * This can return an error if the pixel format is not supported. Normally, all + * non-hwaccel pixel formats should be supported. + * + * Passing NULL for dst_data is allowed. Then the function returns whether the + * operation would have succeeded. (It can return an error if the pix_fmt is + * not supported.) + * + * @param dst_data data pointers to destination image + * @param dst_linesize linesizes for the destination image + * @param pix_fmt the pixel format of the image + * @param range the color range of the image (important for colorspaces such as YUV) + * @param width the width of the image in pixels + * @param height the height of the image in pixels + * @return 0 if the image data was cleared, a negative AVERROR code otherwise + */ +int av_image_fill_black(uint8_t *dst_data[4], const ptrdiff_t dst_linesize[4], + enum AVPixelFormat pix_fmt, enum AVColorRange range, + int width, int height); + +/** * @} */ |