In my tests, this lead to a notable speed increase with the amount
of threads used. Decoding a 720p sample gave the following results:
1 Thread: 1428 FPS
2 Threads: 2501 FPS
8 Threads: 7575 FPS
Automatic: 11326 FPS (On a 16 Core/32 Threads system)
---
libavcodec/jpeglsdec.c | 2 +-
libavcodec/mjpegdec.c | 13 +++++++------
libavcodec/sp5xdec.c | 4 ++--
3 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/libavcodec/jpeglsdec.c b/libavcodec/jpeglsdec.c
index 2e6d018ea6..c0642e8e30 100644
--- a/libavcodec/jpeglsdec.c
+++ b/libavcodec/jpeglsdec.c
@@ -559,7 +559,7 @@ const FFCodec ff_jpegls_decoder = {
.init = ff_mjpeg_decode_init,
.close = ff_mjpeg_decode_end,
FF_CODEC_RECEIVE_FRAME_CB(ff_mjpeg_receive_frame),
- .p.capabilities = AV_CODEC_CAP_DR1,
+ .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP |
FF_CODEC_CAP_SETS_PKT_DTS,
};
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index 9b7465abe7..d30d722398 100644
--- a/libavcodec/mjpegdec.c
+++ b/libavcodec/mjpegdec.c
@@ -54,6 +54,7 @@
#include "exif.h"
#include "bytestream.h"
#include "tiff_common.h"
+#include "thread.h"
static int init_default_huffman_tables(MJpegDecodeContext *s)
@@ -713,7 +714,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
s->avctx->pix_fmt,
AV_PIX_FMT_NONE,
};
- s->hwaccel_pix_fmt = ff_get_format(s->avctx, pix_fmts);
+ s->hwaccel_pix_fmt = ff_thread_get_format(s->avctx, pix_fmts);
if (s->hwaccel_pix_fmt < 0)
return AVERROR(EINVAL);
@@ -729,7 +730,7 @@ int ff_mjpeg_decode_sof(MJpegDecodeContext *s)
}
av_frame_unref(s->picture_ptr);
- if (ff_get_buffer(s->avctx, s->picture_ptr, AV_GET_BUFFER_FLAG_REF) <
0)
+ if (ff_thread_get_buffer(s->avctx, s->picture_ptr,
AV_GET_BUFFER_FLAG_REF) < 0)
return -1;
s->picture_ptr->pict_type = AV_PICTURE_TYPE_I;
s->picture_ptr->key_frame = 1;
@@ -2388,7 +2389,7 @@ static int mjpeg_get_packet(AVCodecContext *avctx)
int ret;
av_packet_unref(s->pkt);
- ret = ff_decode_get_packet(avctx, s->pkt);
+ ret = ff_thread_decode_get_packet(avctx, s->pkt);
if (ret < 0)
return ret;
@@ -3020,7 +3021,7 @@ const FFCodec ff_mjpeg_decoder = {
.close = ff_mjpeg_decode_end,
FF_CODEC_RECEIVE_FRAME_CB(ff_mjpeg_receive_frame),
.flush = decode_flush,
- .p.capabilities = AV_CODEC_CAP_DR1,
+ .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.p.max_lowres = 3,
.p.priv_class = &mjpegdec_class,
.p.profiles = NULL_IF_CONFIG_SMALL(ff_mjpeg_profiles),
@@ -3050,7 +3051,7 @@ const FFCodec ff_thp_decoder = {
.close = ff_mjpeg_decode_end,
FF_CODEC_RECEIVE_FRAME_CB(ff_mjpeg_receive_frame),
.flush = decode_flush,
- .p.capabilities = AV_CODEC_CAP_DR1,
+ .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.p.max_lowres = 3,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP |
FF_CODEC_CAP_SETS_PKT_DTS,
@@ -3068,7 +3069,7 @@ const FFCodec ff_smvjpeg_decoder = {
.close = ff_mjpeg_decode_end,
FF_CODEC_RECEIVE_FRAME_CB(ff_mjpeg_receive_frame),
.flush = decode_flush,
- .p.capabilities = AV_CODEC_CAP_DR1,
+ .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.caps_internal = FF_CODEC_CAP_EXPORTS_CROPPING |
FF_CODEC_CAP_SETS_PKT_DTS | FF_CODEC_CAP_INIT_CLEANUP,
};
diff --git a/libavcodec/sp5xdec.c b/libavcodec/sp5xdec.c
index 394448c5a9..8b08dc672a 100644
--- a/libavcodec/sp5xdec.c
+++ b/libavcodec/sp5xdec.c
@@ -101,7 +101,7 @@ const FFCodec ff_sp5x_decoder = {
.init = ff_mjpeg_decode_init,
.close = ff_mjpeg_decode_end,
FF_CODEC_RECEIVE_FRAME_CB(ff_mjpeg_receive_frame),
- .p.capabilities = AV_CODEC_CAP_DR1,
+ .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.p.max_lowres = 3,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP |
FF_CODEC_CAP_SETS_PKT_DTS,
@@ -118,7 +118,7 @@ const FFCodec ff_amv_decoder = {
.close = ff_mjpeg_decode_end,
FF_CODEC_RECEIVE_FRAME_CB(ff_mjpeg_receive_frame),
.p.max_lowres = 3,
- .p.capabilities = AV_CODEC_CAP_DR1,
+ .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_FRAME_THREADS,
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP |
FF_CODEC_CAP_SETS_PKT_DTS,
};
