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Define static functions fill_image_linesize() and

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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 § edu.

Originally committed as revision 24512 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
S.N. Hemanth Meenakshisundaram 2010-07-26 14:30:47 +00:00 committed by Stefano Sabatini
parent 48adb7e7a4
commit 9dd9d67bd0
1 changed files with 45 additions and 34 deletions
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79
libavcodec/imgconvert.c
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@ -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)
{