Fixes: Ticket7880
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/qtrle.c | 27 +++++++++++++++++++++++++--
tests/ref/fate/qtrle-8bit | 1 +
2 files changed, 26 insertions(+), 2 deletions(-)
diff --git a/libavcodec/qtrle.c b/libavcodec/qtrle.c
index 2c29547e5a..11226cb842 100644
--- a/libavcodec/qtrle.c
+++ b/libavcodec/qtrle.c
@@ -45,6 +45,7 @@ typedef struct QtrleContext {
GetByteContext g;
uint32_t pal[256];
+ int need_flush;
} QtrleContext;
#define CHECK_PIXEL_PTR(n)
\
@@ -444,6 +445,12 @@ static av_cold int qtrle_decode_init(AVCodecContext *avctx)
return 0;
}
+static void qtrle_flush(AVCodecContext *avctx){
+ QtrleContext *s = avctx->priv_data;
+
+ s->need_flush = 0;
+}
+
static int qtrle_decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
@@ -454,11 +461,26 @@ static int qtrle_decode_frame(AVCodecContext *avctx,
int has_palette = 0;
int ret, size;
+ if (!avpkt->data) {
+ if (s->need_flush) {
+ s->need_flush = 0;
+ if ((ret = ff_reget_buffer(avctx, s->frame)) < 0)
+ return ret;
+ if ((ret = av_frame_ref(data, s->frame)) < 0)
+ return ret;
+ *got_frame = 1;
+ }
+ return 0;
+ }
+
bytestream2_init(&s->g, avpkt->data, avpkt->size);
/* check if this frame is even supposed to change */
- if (avpkt->size < 8)
+ if (avpkt->size < 8) {
+ s->need_flush = 1;
return avpkt->size;
+ }
+ s->need_flush = 0;
/* start after the chunk size */
size = bytestream2_get_be32(&s->g) & 0x3FFFFFFF;
@@ -572,5 +594,6 @@ AVCodec ff_qtrle_decoder = {
.init = qtrle_decode_init,
.close = qtrle_decode_end,
.decode = qtrle_decode_frame,
- .capabilities = AV_CODEC_CAP_DR1,
+ .flush = qtrle_flush,
+ .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY,
};
diff --git a/tests/ref/fate/qtrle-8bit b/tests/ref/fate/qtrle-8bit
index 27bb8aad71..39a03b7b6c 100644
--- a/tests/ref/fate/qtrle-8bit
+++ b/tests/ref/fate/qtrle-8bit
@@ -61,3 +61,4 @@
0, 160, 160, 1, 921600, 0xcfd6ad2b
0, 163, 163, 1, 921600, 0x3b372379
0, 165, 165, 1, 921600, 0x36f245f5
+0, 166, 166, 1, 921600, 0x36f245f5
--
2.21.0
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