---
finally there's a sample
---
libavcodec/dfa.c | 25 +++++++++++++++++++++----
1 file changed, 21 insertions(+), 4 deletions(-)
diff --git a/libavcodec/dfa.c b/libavcodec/dfa.c
index 6619b98..2828af6 100644
--- a/libavcodec/dfa.c
+++ b/libavcodec/dfa.c
@@ -284,9 +284,26 @@ static int decode_wdlt(GetByteContext *gb, uint8_t *frame,
int width, int height
return 0;
}
-static int decode_unk6(GetByteContext *gb, uint8_t *frame, int width, int
height)
+static int decode_tdlt(GetByteContext *gb, uint8_t *frame, int width, int
height)
{
- return AVERROR_PATCHWELCOME;
+ const uint8_t *frame_end = frame + width * height;
+ int segments = bytestream2_get_le32(gb);
+ int skip, copy;
+
+ while (segments--) {
+ if (bytestream2_get_bytes_left(gb) < 2)
+ return AVERROR_INVALIDDATA;
+ copy = bytestream2_get_byteu(gb) * 2;
+ skip = bytestream2_get_byteu(gb) * 2;
+ if (frame_end - frame < copy + skip ||
+ bytestream2_get_bytes_left(gb) < copy)
+ return AVERROR_INVALIDDATA;
+ frame += skip;
+ bytestream2_get_buffer(gb, frame, copy);
+ frame += copy;
+ }
+
+ return 0;
}
static int decode_blck(GetByteContext *gb, uint8_t *frame, int width, int
height)
@@ -300,11 +317,11 @@ typedef int (*chunk_decoder)(GetByteContext *gb, uint8_t
*frame, int width, int
static const chunk_decoder decoder[8] = {
decode_copy, decode_tsw1, decode_bdlt, decode_wdlt,
- decode_unk6, decode_dsw1, decode_blck, decode_dds1,
+ decode_tdlt, decode_dsw1, decode_blck, decode_dds1,
};
static const char* chunk_name[8] = {
- "COPY", "TSW1", "BDLT", "WDLT", "????", "DSW1", "BLCK", "DDS1"
+ "COPY", "TSW1", "BDLT", "WDLT", "TDLT", "DSW1", "BLCK", "DDS1"
};
static int dfa_decode_frame(AVCodecContext *avctx,
--
1.7.9.5
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