This allows setting the compression level used by zlib.
---
libavcodec/flashsvenc.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/libavcodec/flashsvenc.c b/libavcodec/flashsvenc.c
index 5cf0602f5d..f650e517d0 100644
--- a/libavcodec/flashsvenc.c
+++ b/libavcodec/flashsvenc.c
@@ -67,6 +67,7 @@ typedef struct FlashSVContext {
unsigned packet_size;
int64_t last_key_frame;
uint8_t tmpblock[3 * 256 * 256];
+ int compression_level;
} FlashSVContext;
static int copy_region_enc(const uint8_t *sptr, uint8_t *dptr, int dx, int dy,
@@ -121,6 +122,10 @@ static av_cold int flashsv_encode_init(AVCodecContext
*avctx)
nb_blocks = h_blocks * v_blocks;
s->packet_size = 4 + nb_blocks * (2 + 3 * BLOCK_WIDTH * BLOCK_HEIGHT);
+ s->compression_level = avctx->compression_level == FF_COMPRESSION_DEFAULT
+ ? Z_DEFAULT_COMPRESSION
+ : av_clip(avctx->compression_level, 0, 9);
+
return 0;
}
@@ -170,9 +175,10 @@ static int encode_bitstream(FlashSVContext *s, const
AVFrame *p, uint8_t *buf,
p->linesize[0], previous_frame);
if (res || *I_frame) {
- unsigned long zsize = 3 * block_width * block_height;
+ unsigned long zsize = 3 * block_width * block_height + 12;
ret = compress2(ptr + 2, &zsize, s->tmpblock,
- 3 * cur_blk_width * cur_blk_height, 9);
+ 3 * cur_blk_width * cur_blk_height,
+ s->compression_level);
if (ret != Z_OK)
av_log(s->avctx, AV_LOG_ERROR,
--
2.30.2
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