diff options
author | S.N. Hemanth Meenakshisundaram <smeenaks@ucsd.edu> | 2010-07-26 18:30:47 +0400 |
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committer | Stefano Sabatini <stefano.sabatini-lala@poste.it> | 2010-07-26 18:30:47 +0400 |
commit | 9dd9d67bd0007ed09aa6f3ecf2b0884f470f2de7 (patch) | |
tree | c5f1af1f227e54677c0cd60a3375dbfb7e27bbb0 /libavcodec/imgconvert.c | |
parent | 48adb7e7a4f524537c9f2d219a2d926ed391131e (diff) |
Define static functions fill_image_linesize() and
fill_image_data_ptr(). ff_fill_linesize() and ff_fill_pointer() now wrap
these functions.
The new functions are more generic, and are going to be exported in a
future patch.
Patch by S.N. Hemanth Meenakshisundaram smeenaks # ucsd ยง edu.
Originally committed as revision 24512 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/imgconvert.c')
-rw-r--r-- | libavcodec/imgconvert.c | 79 |
1 files changed, 45 insertions, 34 deletions
diff --git a/libavcodec/imgconvert.c b/libavcodec/imgconvert.c index 68f1a75746..cd9c741918 100644 --- a/libavcodec/imgconvert.c +++ b/libavcodec/imgconvert.c @@ -490,20 +490,20 @@ int ff_set_systematic_pal(uint32_t pal[256], enum PixelFormat pix_fmt){ return 0; } -int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width) +static int fill_image_linesize(int linesize[4], enum PixelFormat pix_fmt, int width) { int i; const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; int max_plane_step [4]; int max_plane_step_comp[4]; - memset(picture->linesize, 0, sizeof(picture->linesize)); + memset(linesize, 0, 4*sizeof(linesize[0])); if (desc->flags & PIX_FMT_HWACCEL) return -1; if (desc->flags & PIX_FMT_BITSTREAM) { - picture->linesize[0] = (width * (desc->comp[0].step_minus1+1) + 7) >> 3; + linesize[0] = (width * (desc->comp[0].step_minus1+1) + 7) >> 3; return 0; } @@ -519,19 +519,24 @@ int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width) for (i = 0; i < 4; i++) { int s = (max_plane_step_comp[i] == 1 || max_plane_step_comp[i] == 2) ? desc->log2_chroma_w : 0; - picture->linesize[i] = max_plane_step[i] * (((width + (1 << s) - 1)) >> s); + linesize[i] = max_plane_step[i] * (((width + (1 << s) - 1)) >> s); } return 0; } -int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt, - int height) +int ff_fill_linesize(AVPicture *picture, enum PixelFormat pix_fmt, int width) +{ + return fill_image_linesize(picture->linesize, pix_fmt, width); +} + +static int fill_image_data_ptr(uint8_t *data[4], uint8_t *ptr, enum PixelFormat pix_fmt, + int height, const int linesize[4]) { int size, h2, size2; const AVPixFmtDescriptor *desc = &av_pix_fmt_descriptors[pix_fmt]; - size = picture->linesize[0] * height; + size = linesize[0] * height; switch(pix_fmt) { case PIX_FMT_YUV420P: case PIX_FMT_YUV422P: @@ -550,28 +555,28 @@ int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt, case PIX_FMT_YUV422P16BE: case PIX_FMT_YUV444P16BE: h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h; - size2 = picture->linesize[1] * h2; - picture->data[0] = ptr; - picture->data[1] = picture->data[0] + size; - picture->data[2] = picture->data[1] + size2; - picture->data[3] = NULL; + size2 = linesize[1] * h2; + data[0] = ptr; + data[1] = data[0] + size; + data[2] = data[1] + size2; + data[3] = NULL; return size + 2 * size2; case PIX_FMT_YUVA420P: h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h; - size2 = picture->linesize[1] * h2; - picture->data[0] = ptr; - picture->data[1] = picture->data[0] + size; - picture->data[2] = picture->data[1] + size2; - picture->data[3] = picture->data[1] + size2 + size2; + size2 = linesize[1] * h2; + data[0] = ptr; + data[1] = data[0] + size; + data[2] = data[1] + size2; + data[3] = data[1] + size2 + size2; return 2 * size + 2 * size2; case PIX_FMT_NV12: case PIX_FMT_NV21: h2 = (height + (1 << desc->log2_chroma_h) - 1) >> desc->log2_chroma_h; - size2 = picture->linesize[1] * h2; - picture->data[0] = ptr; - picture->data[1] = picture->data[0] + size; - picture->data[2] = NULL; - picture->data[3] = NULL; + size2 = linesize[1] * h2; + data[0] = ptr; + data[1] = data[0] + size; + data[2] = NULL; + data[3] = NULL; return size + size2; case PIX_FMT_RGB24: case PIX_FMT_BGR24: @@ -603,10 +608,10 @@ int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt, case PIX_FMT_MONOWHITE: case PIX_FMT_MONOBLACK: case PIX_FMT_Y400A: - picture->data[0] = ptr; - picture->data[1] = NULL; - picture->data[2] = NULL; - picture->data[3] = NULL; + data[0] = ptr; + data[1] = NULL; + data[2] = NULL; + data[3] = NULL; return size; case PIX_FMT_PAL8: case PIX_FMT_RGB8: @@ -615,20 +620,26 @@ int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt, case PIX_FMT_BGR4_BYTE: case PIX_FMT_GRAY8: size2 = (size + 3) & ~3; - picture->data[0] = ptr; - picture->data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */ - picture->data[2] = NULL; - picture->data[3] = NULL; + data[0] = ptr; + data[1] = ptr + size2; /* palette is stored here as 256 32 bit words */ + data[2] = NULL; + data[3] = NULL; return size2 + 256 * 4; default: - picture->data[0] = NULL; - picture->data[1] = NULL; - picture->data[2] = NULL; - picture->data[3] = NULL; + data[0] = NULL; + data[1] = NULL; + data[2] = NULL; + data[3] = NULL; return -1; } } +int ff_fill_pointer(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt, + int height) +{ + return fill_image_data_ptr(picture->data, ptr, pix_fmt, height, picture->linesize); +} + int avpicture_fill(AVPicture *picture, uint8_t *ptr, enum PixelFormat pix_fmt, int width, int height) { |