Encoders (usually) have no business modifying frame->data
(which need not be writable), so they should use the appropriate
pointers.
Signed-off-by: Andreas Rheinhardt <andreas.rheinha...@outlook.com>
---
libavcodec/msrleenc.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/libavcodec/msrleenc.c b/libavcodec/msrleenc.c
index 11f7d2a319..931e7af053 100644
--- a/libavcodec/msrleenc.c
+++ b/libavcodec/msrleenc.c
@@ -64,7 +64,8 @@ static void write_run(AVCodecContext *avctx, uint8_t **data,
int len, int value)
}
}
-static void write_absolute(AVCodecContext *avctx, uint8_t **data, uint8_t
*line, int len)
+static void write_absolute(AVCodecContext *avctx, uint8_t **data,
+ const uint8_t *line, int len)
{
// writing 255 would be wasteful here due to the padding requirement
while (len >= 254) {
@@ -136,7 +137,8 @@ static void write_yskip(AVCodecContext *avctx, uint8_t
**data, int yskip)
}
// used both to encode lines in keyframes and to encode lines between deltas
-static void encode_line(AVCodecContext *avctx, uint8_t **data, uint8_t *line,
int length)
+static void encode_line(AVCodecContext *avctx, uint8_t **data,
+ const uint8_t *line, int length)
{
int run = 0, last = -1, absstart = 0;
if (length == 0)
@@ -192,8 +194,8 @@ static int encode(AVCodecContext *avctx, AVPacket *pkt,
// compare to previous frame
int yskip = 0; // we can encode large skips using deltas
for (int y = avctx->height-1; y >= 0; y--) {
- uint8_t *line = &pict->data[0][y*pict->linesize[0]];
- uint8_t *prev =
&s->last_frame->data[0][y*s->last_frame->linesize[0]];
+ const uint8_t *line = &pict->data[0][y*pict->linesize[0]];
+ const uint8_t *prev =
&s->last_frame->data[0][y*s->last_frame->linesize[0]];
// we need at least 5 pixels in a row for a delta to be worthwhile
int delta = 0, linestart = 0, encoded = 0;
for (int x = 0; x < avctx->width; x++) {
--
2.34.1
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