Revision 9b7269e3 libavcore/imgutils.c
| libavcore/imgutils.c | ||
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#include "imgutils.h" |
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#include "libavutil/pixdesc.h" |
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void av_fill_image_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
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void av_image_fill_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4],
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const AVPixFmtDescriptor *pixdesc) |
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{
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int i; |
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} |
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} |
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int av_get_image_linesize(enum PixelFormat pix_fmt, int width, int plane)
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int av_image_get_linesize(enum PixelFormat pix_fmt, int width, int plane)
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{
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const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; |
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int max_step [4]; /* max pixel step for each plane */ |
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if (desc->flags & PIX_FMT_BITSTREAM) |
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return (width * (desc->comp[0].step_minus1+1) + 7) >> 3; |
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av_fill_image_max_pixsteps(max_step, max_step_comp, desc);
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av_image_fill_max_pixsteps(max_step, max_step_comp, desc);
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s = (max_step_comp[plane] == 1 || max_step_comp[plane] == 2) ? desc->log2_chroma_w : 0; |
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return max_step[plane] * (((width + (1 << s) - 1)) >> s); |
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} |
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int av_fill_image_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int width)
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int av_image_fill_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int width)
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{
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int i; |
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const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; |
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return 0; |
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} |
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av_fill_image_max_pixsteps(max_step, max_step_comp, desc);
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av_image_fill_max_pixsteps(max_step, max_step_comp, desc);
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for (i = 0; i < 4; i++) {
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int s = (max_step_comp[i] == 1 || max_step_comp[i] == 2) ? desc->log2_chroma_w : 0; |
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linesizes[i] = max_step[i] * (((width + (1 << s) - 1)) >> s); |
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return 0; |
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} |
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int av_fill_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height,
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int av_image_fill_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height,
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uint8_t *ptr, const int linesizes[4]) |
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{
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int i, total_size, size[4], has_plane[4]; |
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static const AVClass imgutils_class = { "IMGUTILS", av_default_item_name, NULL, LIBAVUTIL_VERSION_INT, offsetof(ImgUtils, log_offset), offsetof(ImgUtils, log_ctx) };
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int av_check_image_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
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int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
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{
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ImgUtils imgutils = { &imgutils_class, log_offset, log_ctx };
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av_log(&imgutils, AV_LOG_ERROR, "Picture size %ux%u is invalid\n", w, h); |
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return AVERROR(EINVAL); |
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} |
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#if FF_API_OLD_IMAGE_NAMES |
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void av_fill_image_max_pixsteps(int max_pixsteps[4], int max_pixstep_comps[4], |
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const AVPixFmtDescriptor *pixdesc) |
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{
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av_image_fill_max_pixsteps(max_pixsteps, max_pixstep_comps, pixdesc); |
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} |
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int av_get_image_linesize(enum PixelFormat pix_fmt, int width, int plane) |
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{
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return av_image_get_linesize(pix_fmt, width, plane); |
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} |
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int av_fill_image_linesizes(int linesizes[4], enum PixelFormat pix_fmt, int width) |
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{
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return av_image_fill_linesizes(linesizes, pix_fmt, width); |
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} |
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int av_fill_image_pointers(uint8_t *data[4], enum PixelFormat pix_fmt, int height, |
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uint8_t *ptr, const int linesizes[4]) |
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{
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return av_image_fill_pointers(data, pix_fmt, height, ptr, linesizes); |
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} |
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int av_check_image_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx) |
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{
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return av_image_check_size(w, h, log_offset, log_ctx); |
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} |
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#endif |
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