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Enable multithreding when decoding with libopenjpeg

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Enable multithreding when decoding with libopenjpeg

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Jean First 2011-09-30 09:42:45 +02:00 committed by Ronald S. Bultje
parent 27209bb108
commit b8bb9c0267
1 changed files with 36 additions and 9 deletions
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45
libavcodec/libopenjpeg.c
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@ -27,6 +27,7 @@
#include "libavutil/imgutils.h"
#include "avcodec.h"
#include "libavutil/intreadwrite.h"
#include "thread.h"
#define OPJ_STATIC
#include <openjpeg.h>
@ -57,6 +58,14 @@ static av_cold int libopenjpeg_decode_init(AVCodecContext *avctx)
return 0;
}
static av_cold int libopenjpeg_decode_init_thread_copy(AVCodecContext *avctx)
{
LibOpenJPEGContext *ctx = avctx->priv_data;
avctx->coded_frame = &ctx->image;
return 0;
}
static int libopenjpeg_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt)
@ -94,7 +103,7 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
}
opj_set_event_mgr((opj_common_ptr)dec, NULL, NULL);
ctx->dec_params.cp_reduce = avctx->lowres;
ctx->dec_params.cp_limit_decoding = LIMIT_TO_MAIN_HEADER;
// Tie decoder with decoding parameters
opj_setup_decoder(dec, &ctx->dec_params);
stream = opj_cio_open((opj_common_ptr)dec, buf, buf_size);
@ -104,7 +113,7 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
return -1;
}
// Decode the codestream
// Decode the header only
image = opj_decode_with_info(dec, stream, NULL);
opj_cio_close(stream);
if(!image) {
@ -112,8 +121,8 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
opj_destroy_decompress(dec);
return -1;
}
width = image->comps[0].w << avctx->lowres;
height = image->comps[0].h << avctx->lowres;
width = image->x1 - image->x0;
height = image->y1 - image->y0;
if(av_image_check_size(width, height, 0, avctx) < 0) {
av_log(avctx, AV_LOG_ERROR, "%dx%d dimension invalid.\n", width, height);
goto done;
@ -139,13 +148,30 @@ static int libopenjpeg_decode_frame(AVCodecContext *avctx,
}
if(picture->data[0])
avctx->release_buffer(avctx, picture);
ff_thread_release_buffer(avctx, picture);
if(avctx->get_buffer(avctx, picture) < 0) {
av_log(avctx, AV_LOG_ERROR, "Couldn't allocate image buffer.\n");
if(ff_thread_get_buffer(avctx, picture) < 0){
av_log(avctx, AV_LOG_ERROR, "ff_thread_get_buffer() failed\n");
return -1;
}
ff_thread_finish_setup(avctx);
ctx->dec_params.cp_limit_decoding = NO_LIMITATION;
ctx->dec_params.cp_reduce = avctx->lowres;
// Tie decoder with decoding parameters
opj_setup_decoder(dec, &ctx->dec_params);
stream = opj_cio_open((opj_common_ptr)dec, buf, buf_size);
if(!stream) {
av_log(avctx, AV_LOG_ERROR, "Codestream could not be opened for reading.\n");
opj_destroy_decompress(dec);
return -1;
}
// Decode the codestream
image = opj_decode_with_info(dec, stream, NULL);
opj_cio_close(stream);
for(x = 0; x < image->numcomps; x++) {
adjust[x] = FFMAX(image->comps[x].prec - 8, 0);
}
@ -179,7 +205,7 @@ static av_cold int libopenjpeg_decode_close(AVCodecContext *avctx)
LibOpenJPEGContext *ctx = avctx->priv_data;
if(ctx->image.data[0])
avctx->release_buffer(avctx, &ctx->image);
ff_thread_release_buffer(avctx, &ctx->image);
return 0 ;
}
@ -192,7 +218,8 @@ AVCodec ff_libopenjpeg_decoder = {
.init = libopenjpeg_decode_init,
.close = libopenjpeg_decode_close,
.decode = libopenjpeg_decode_frame,
.capabilities = CODEC_CAP_DR1,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_FRAME_THREADS,
.max_lowres = 5,
.long_name = NULL_IF_CONFIG_SMALL("OpenJPEG based JPEG 2000 decoder"),
.init_thread_copy = ONLY_IF_THREADS_ENABLED(libopenjpeg_decode_init_thread_copy)
};