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Merge the 3 COPY_FROM_* macros with lots of duplicated code into a single 

copy_from function.

Originally committed as revision 18225 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2009-03-29 18:15:02 +00:00
parent a1f6ffd44d
commit aadf88119e
1 changed files with 21 additions and 88 deletions
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109
libavcodec/interplayvideo.c
View File

@ -82,85 +82,36 @@ typedef struct IpvideoContext {
return -1; \
}
#define COPY_FROM_CURRENT() \
motion_offset = current_offset; \
motion_offset += y * s->stride; \
motion_offset += x; \
if (motion_offset < 0) { \
av_log(s->avctx, AV_LOG_ERROR, " Interplay video: motion offset < 0 (%d)\n", motion_offset); \
return -1; \
} else if (motion_offset > s->upper_motion_limit_offset) { \
av_log(s->avctx, AV_LOG_ERROR, " Interplay video: motion offset above limit (%d >= %d)\n", \
motion_offset, s->upper_motion_limit_offset); \
return -1; \
} \
s->dsp.put_pixels_tab[1][0](s->pixel_ptr, \
s->current_frame.data[0] + motion_offset, s->stride, 8);
#define COPY_FROM_PREVIOUS() \
motion_offset = current_offset; \
motion_offset += y * s->stride; \
motion_offset += x; \
if (motion_offset < 0) { \
av_log(s->avctx, AV_LOG_ERROR, " Interplay video: motion offset < 0 (%d)\n", motion_offset); \
return -1; \
} else if (motion_offset > s->upper_motion_limit_offset) { \
av_log(s->avctx, AV_LOG_ERROR, " Interplay video: motion offset above limit (%d >= %d)\n", \
motion_offset, s->upper_motion_limit_offset); \
return -1; \
} \
s->dsp.put_pixels_tab[1][0](s->pixel_ptr, \
s->last_frame.data[0] + motion_offset, s->stride, 8);
#define COPY_FROM_SECOND_LAST() \
motion_offset = current_offset; \
motion_offset += y * s->stride; \
motion_offset += x; \
if (motion_offset < 0) { \
av_log(s->avctx, AV_LOG_ERROR, " Interplay video: motion offset < 0 (%d)\n", motion_offset); \
return -1; \
} else if (motion_offset > s->upper_motion_limit_offset) { \
av_log(s->avctx, AV_LOG_ERROR, " Interplay video: motion offset above limit (%d >= %d)\n", \
motion_offset, s->upper_motion_limit_offset); \
return -1; \
} \
s->dsp.put_pixels_tab[1][0](s->pixel_ptr, \
s->second_last_frame.data[0] + motion_offset, s->stride, 8);
static int copy_from(IpvideoContext *s, AVFrame *src, int delta_x, int delta_y)
{
int current_offset = s->pixel_ptr - s->current_frame.data[0];
int motion_offset = current_offset + delta_y * s->stride + delta_x;
if (motion_offset < 0) {
av_log(s->avctx, AV_LOG_ERROR, " Interplay video: motion offset < 0 (%d)\n", motion_offset);
return -1;
} else if (motion_offset > s->upper_motion_limit_offset) {
av_log(s->avctx, AV_LOG_ERROR, " Interplay video: motion offset above limit (%d >= %d)\n",
motion_offset, s->upper_motion_limit_offset);
return -1;
}
s->dsp.put_pixels_tab[1][0](s->pixel_ptr, src->data[0] + motion_offset, s->stride, 8);
return 0;
}
static int ipvideo_decode_block_opcode_0x0(IpvideoContext *s)
{
int x, y;
int motion_offset;
int current_offset = s->pixel_ptr - s->current_frame.data[0];
/* copy a block from the previous frame */
x = y = 0;
COPY_FROM_PREVIOUS();
/* report success */
return 0;
return copy_from(s, &s->last_frame, 0, 0);
}
static int ipvideo_decode_block_opcode_0x1(IpvideoContext *s)
{
int x, y;
int motion_offset;
int current_offset = s->pixel_ptr - s->current_frame.data[0];
/* copy block from 2 frames ago */
x = y = 0;
COPY_FROM_SECOND_LAST();
/* report success */
return 0;
return copy_from(s, &s->second_last_frame, 0, 0);
}
static int ipvideo_decode_block_opcode_0x2(IpvideoContext *s)
{
unsigned char B;
int x, y;
int motion_offset;
int current_offset = s->pixel_ptr - s->current_frame.data[0];
/* copy block from 2 frames ago using a motion vector; need 1 more byte */
CHECK_STREAM_PTR(1);
@ -175,18 +126,13 @@ static int ipvideo_decode_block_opcode_0x2(IpvideoContext *s)
}
debug_interplay (" motion byte = %d, (x, y) = (%d, %d)\n", B, x, y);
COPY_FROM_SECOND_LAST();
/* report success */
return 0;
return copy_from(s, &s->second_last_frame, x, y);
}
static int ipvideo_decode_block_opcode_0x3(IpvideoContext *s)
{
unsigned char B;
int x, y;
int motion_offset;
int current_offset = s->pixel_ptr - s->current_frame.data[0];
/* copy 8x8 block from current frame from an up/left block */
@ -203,18 +149,13 @@ static int ipvideo_decode_block_opcode_0x3(IpvideoContext *s)
}
debug_interplay (" motion byte = %d, (x, y) = (%d, %d)\n", B, x, y);
COPY_FROM_CURRENT();
/* report success */
return 0;
return copy_from(s, &s->current_frame, x, y);
}
static int ipvideo_decode_block_opcode_0x4(IpvideoContext *s)
{
int x, y;
unsigned char B, BL, BH;
int motion_offset;
int current_offset = s->pixel_ptr - s->current_frame.data[0];
/* copy a block from the previous frame; need 1 more byte */
CHECK_STREAM_PTR(1);
@ -226,17 +167,12 @@ static int ipvideo_decode_block_opcode_0x4(IpvideoContext *s)
y = -8 + BH;
debug_interplay (" motion byte = %d, (x, y) = (%d, %d)\n", B, x, y);
COPY_FROM_PREVIOUS();
/* report success */
return 0;
return copy_from(s, &s->last_frame, x, y);
}
static int ipvideo_decode_block_opcode_0x5(IpvideoContext *s)
{
signed char x, y;
int motion_offset;
int current_offset = s->pixel_ptr - s->current_frame.data[0];
/* copy a block from the previous frame using an expanded range;
* need 2 more bytes */
@ -246,10 +182,7 @@ static int ipvideo_decode_block_opcode_0x5(IpvideoContext *s)
y = *s->stream_ptr++;
debug_interplay (" motion bytes = %d, %d\n", x, y);
COPY_FROM_PREVIOUS();
/* report success */
return 0;
return copy_from(s, &s->last_frame, x, y);
}
static int ipvideo_decode_block_opcode_0x6(IpvideoContext *s)