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Extend read_line() to make it take a read_pal_component parameter.

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Originally committed as revision 18303 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2009-04-01 21:07:49 +00:00
parent 710441c2f6
commit 0a47f60aa8
1 changed files with 8 additions and 3 deletions

11
libavcodec/pixdesc.h

@ -94,8 +94,13 @@ extern const AVPixFmtDescriptor av_pix_fmt_descriptors[];
* @param y the vertical coordinate of the first pixel to read
* @param w the width of the line to read, that is the number of
* values to write to \p dst
* @param read_pal_component if not zero and the format is a paletted
* format writes to \p dst the values corresponding to the palette
* component \p c in data[1], rather than the palette indexes in
* data[0]. The behavior is undefined if the format is not paletted.
*/
static inline void read_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4], const AVPixFmtDescriptor *desc, int x, int y, int c, int w)
static inline void read_line(uint16_t *dst, const uint8_t *data[4], const int linesize[4],
const AVPixFmtDescriptor *desc, int x, int y, int c, int w, int read_pal_component)
{
AVComponentDescriptor comp= desc->comp[c];
int plane= comp.plane;
@ -112,7 +117,7 @@ static inline void read_line(uint16_t *dst, const uint8_t *data[4], const int li
while(w--){
int val = show_bits(&gb, depth);
if(flags & PIX_FMT_PAL)
if(read_pal_component)
val= data[1][4*val + c];
skip_bits(&gb, step);
*dst++= val;
@ -125,7 +130,7 @@ static inline void read_line(uint16_t *dst, const uint8_t *data[4], const int li
if(flags & PIX_FMT_BE) val= AV_RB16(p);
else val= AV_RL16(p);
val = (val>>shift) & mask;
if(flags & PIX_FMT_PAL)
if(read_pal_component)
val= data[1][4*val + c];
p+= step;
*dst++= val;