Message ID | 1eeaeac2-bbd3-b6ca-1a55-6918ca58a588@gmail.com |
---|---|
State | Superseded |
Headers | show |
On Mon, Nov 06, 2017 at 02:56:16PM +0800, Jun Zhao wrote: > > configure | 2 > doc/examples/Makefile | 1 > doc/examples/vaapi_encode.c | 308 ++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 311 insertions(+) > b4a1cfca5fb56770fae68218661f060e25ffe769 0001-examples-vaapi_encode-Add-a-VA-API-encode-example.patch > From d16f766363d9ecc240b0f8e025c2a8f91ea4775e Mon Sep 17 00:00:00 2001 > From: Jun Zhao <jun.zhao@intel.com> > Date: Mon, 6 Nov 2017 14:45:27 +0800 > Subject: [PATCH] examples/vaapi_encode: Add a VA-API encode example. > > add a VA-API encode example, only support NV12 input, usage like: > ./vaapi_encode 1920 1080 test.yuv test.h264 > > Signed-off-by: Jun Zhao <jun.zhao@intel.com> > Signed-off-by: Liu, Kaixuan <kaixuan.liu@intel.com> > --- > configure | 2 + > doc/examples/Makefile | 1 + > doc/examples/vaapi_encode.c | 308 ++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 311 insertions(+) > create mode 100644 doc/examples/vaapi_encode.c fails to build arm$ make examples CC doc/examples/vaapi_encode.o src/doc/examples/vaapi_encode.c:36:39: fatal error: libavfilter/avfiltergraph.h: No such file or directory compilation terminated. make: *** [doc/examples/vaapi_encode.o] Error 1 [...]
On 2017/11/7 9:38, Michael Niedermayer wrote: > On Mon, Nov 06, 2017 at 02:56:16PM +0800, Jun Zhao wrote: >> configure | 2 >> doc/examples/Makefile | 1 >> doc/examples/vaapi_encode.c | 308 ++++++++++++++++++++++++++++++++++++++++++++ >> 3 files changed, 311 insertions(+) >> b4a1cfca5fb56770fae68218661f060e25ffe769 0001-examples-vaapi_encode-Add-a-VA-API-encode-example.patch >> From d16f766363d9ecc240b0f8e025c2a8f91ea4775e Mon Sep 17 00:00:00 2001 >> From: Jun Zhao <jun.zhao@intel.com> >> Date: Mon, 6 Nov 2017 14:45:27 +0800 >> Subject: [PATCH] examples/vaapi_encode: Add a VA-API encode example. >> >> add a VA-API encode example, only support NV12 input, usage like: >> ./vaapi_encode 1920 1080 test.yuv test.h264 >> >> Signed-off-by: Jun Zhao <jun.zhao@intel.com> >> Signed-off-by: Liu, Kaixuan <kaixuan.liu@intel.com> >> --- >> configure | 2 + >> doc/examples/Makefile | 1 + >> doc/examples/vaapi_encode.c | 308 ++++++++++++++++++++++++++++++++++++++++++++ >> 3 files changed, 311 insertions(+) >> create mode 100644 doc/examples/vaapi_encode.c > fails to build > arm$ make examples > CC doc/examples/vaapi_encode.o > src/doc/examples/vaapi_encode.c:36:39: fatal error: libavfilter/avfiltergraph.h: No such file or directory > compilation terminated. > make: *** [doc/examples/vaapi_encode.o] Error 1 > > > [...] Will submit V2 to fix the build error. Tks. > > > _______________________________________________ > ffmpeg-devel mailing list > ffmpeg-devel@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
On 06/11/17 06:56, Jun Zhao wrote: > From d16f766363d9ecc240b0f8e025c2a8f91ea4775e Mon Sep 17 00:00:00 2001 > From: Jun Zhao <jun.zhao@intel.com> > Date: Mon, 6 Nov 2017 14:45:27 +0800 > Subject: [PATCH] examples/vaapi_encode: Add a VA-API encode example. > > add a VA-API encode example, only support NV12 input, usage like: > ./vaapi_encode 1920 1080 test.yuv test.h264 > > Signed-off-by: Jun Zhao <jun.zhao@intel.com> > Signed-off-by: Liu, Kaixuan <kaixuan.liu@intel.com> > --- > configure | 2 + > doc/examples/Makefile | 1 + > doc/examples/vaapi_encode.c | 308 ++++++++++++++++++++++++++++++++++++++++++++ > 3 files changed, 311 insertions(+) > create mode 100644 doc/examples/vaapi_encode.c > > diff --git a/configure b/configure > index 1b0f064607..2df0205e09 100755 > --- a/configure > +++ b/configure > @@ -1524,6 +1524,7 @@ EXAMPLE_LIST=" > scaling_video_example > transcode_aac_example > transcoding_example > + vaapi_encode_example > " > > EXTERNAL_AUTODETECT_LIBRARY_LIST=" > @@ -3294,6 +3295,7 @@ resampling_audio_example_deps="avutil swresample" > scaling_video_example_deps="avutil swscale" > transcode_aac_example_deps="avcodec avformat swresample" > transcoding_example_deps="avfilter avcodec avformat avutil" > +vaapi_encode_example_deps="avfilter avcodec avformat avutil" > > # EXTRALIBS_LIST > cpu_init_extralibs="pthreads_extralibs" > diff --git a/doc/examples/Makefile b/doc/examples/Makefile > index 58afd71b85..da5af36532 100644 > --- a/doc/examples/Makefile > +++ b/doc/examples/Makefile > @@ -19,6 +19,7 @@ EXAMPLES-$(CONFIG_RESAMPLING_AUDIO_EXAMPLE) += resampling_audio > EXAMPLES-$(CONFIG_SCALING_VIDEO_EXAMPLE) += scaling_video > EXAMPLES-$(CONFIG_TRANSCODE_AAC_EXAMPLE) += transcode_aac > EXAMPLES-$(CONFIG_TRANSCODING_EXAMPLE) += transcoding > +EXAMPLES-$(CONFIG_VAAPI_ENCODE_EXAMPLE) += vaapi_encode > > EXAMPLES := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)$(EXESUF)) > EXAMPLES_G := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)_g$(EXESUF)) > diff --git a/doc/examples/vaapi_encode.c b/doc/examples/vaapi_encode.c > new file mode 100644 > index 0000000000..02b1ac5a4a > --- /dev/null > +++ b/doc/examples/vaapi_encode.c > @@ -0,0 +1,308 @@ > +/* > + * Video Acceleration API (video encoding) encode sample > + * > + * This file is part of FFmpeg. > + * > + * FFmpeg is free software; you can redistribute it and/or > + * modify it under the terms of the GNU Lesser General Public > + * License as published by the Free Software Foundation; either > + * version 2.1 of the License, or (at your option) any later version. > + * > + * FFmpeg is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU > + * Lesser General Public License for more details. > + * > + * You should have received a copy of the GNU Lesser General Public > + * License along with FFmpeg; if not, write to the Free Software > + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA > + */ > + > +/** > + * @file > + * Intel VAAPI-accelerated encoding example. > + * > + * @example vaapi_encode.c > + * This example shows how to do VAAPI-accelerated encoding. now only support NV12 > + * raw file, usage like: vaapi_enc 1920 1080 input.yuv output.h264 > + */ > + > +#include <stdio.h> > +#include <string.h> > +#include <errno.h> > + > +#include <libavcodec/avcodec.h> > +#include <libavformat/avformat.h> > +#include <libavfilter/avfiltergraph.h> > +#include <libavfilter/buffersink.h> > +#include <libavfilter/buffersrc.h> > +#include <libavutil/pixdesc.h> > +#include <libavutil/hwcontext.h> > + > +typedef struct FilterContext { > + AVFilterContext *buffersink_ctx; > + AVFilterContext *buffersrc_ctx; > + AVFilterGraph *filter_graph; > +} FilterContext; > + > +static int width, height; > +static AVBufferRef *hw_device_ctx = NULL; > + > +static int init_filter(FilterContext *filter_ctx, char *args, AVBufferRef *hw_device_ctx) > +{ > + char filter_spec[] = "format=nv12,hwupload"; > + int ret = 0, i = 0; > + const AVFilter *buffersrc, *buffersink; > + AVFilterContext *buffersrc_ctx, *buffersink_ctx; > + AVFilterInOut *outputs = avfilter_inout_alloc(); > + AVFilterInOut *inputs = avfilter_inout_alloc(); > + AVFilterGraph *filter_graph = avfilter_graph_alloc(); > + > + buffersrc = avfilter_get_by_name("buffer"); > + buffersink = avfilter_get_by_name("buffersink"); > + if (!buffersrc || !buffersink) { > + av_log(NULL, AV_LOG_ERROR, "filtering source or sink element not found\n"); > + ret = AVERROR_UNKNOWN; > + goto fail; > + } > + > + ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in", > + args, NULL, filter_graph); > + if (ret < 0) { > + av_log(NULL, AV_LOG_ERROR, "Cannot create buffer source. Error code:%s\n", av_err2str(ret)); > + goto fail; > + } > + ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out", > + NULL, NULL, filter_graph); > + if (ret < 0) { > + av_log(NULL, AV_LOG_ERROR, "Cannot create buffer sink. Error code:%s\n", av_err2str(ret)); > + goto fail; > + } > + > + outputs->name = av_strdup("in"); > + outputs->filter_ctx = buffersrc_ctx; > + outputs->pad_idx = 0; > + outputs->next = NULL; > + inputs->name = av_strdup("out"); > + inputs->filter_ctx = buffersink_ctx; > + inputs->pad_idx = 0; > + inputs->next = NULL; > + if (!outputs->name || !inputs->name) { > + ret = AVERROR(ENOMEM); > + goto fail; > + } > + > + if ((ret = avfilter_graph_parse_ptr(filter_graph, filter_spec, > + &inputs, &outputs, NULL)) < 0) { > + av_log(NULL, AV_LOG_ERROR, "Error code: %s\n", av_err2str(ret)); > + goto fail; > + } > + > + if (hw_device_ctx) { > + for (i = 0; i < filter_graph->nb_filters; i++) { > + filter_graph->filters[i]->hw_device_ctx = av_buffer_ref(hw_device_ctx); > + } > + } > + > + if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0) { > + av_log(NULL, AV_LOG_ERROR, "Fail to config filter graph. Error code: %s\n", av_err2str(ret)); > + goto fail; > + } > + > + filter_ctx->buffersrc_ctx = buffersrc_ctx; > + filter_ctx->buffersink_ctx = buffersink_ctx; > + filter_ctx->filter_graph = filter_graph; > + > +fail: > + avfilter_inout_free(&inputs); > + avfilter_inout_free(&outputs); > + return ret; > +} Do you really want to use libavfilter here for the upload? Given that you require NV12 input, this could be done more easily by making a new hwframe context and transfering data to that. > + > +static int encode_write(AVCodecContext *avctx, AVFrame *frame, FILE *fout) > +{ > + int ret = 0; > + AVPacket enc_pkt; > + > + av_init_packet(&enc_pkt); > + enc_pkt.data = NULL; > + enc_pkt.size = 0; > + > + if ((ret = avcodec_send_frame(avctx, frame)) < 0) { > + fprintf(stderr, "Error code: %s\n", av_err2str(ret)); > + goto end; > + } > + while (1) { > + ret = avcodec_receive_packet(avctx, &enc_pkt); > + if (ret) > + break; > + > + enc_pkt.stream_index = 0; > + ret = fwrite(enc_pkt.data, enc_pkt.size, 1, fout); For an example, I think it would be better not to rely on the implicit av_packet_unref() in avcodec_receive_packet(). > + } > + > +end: > + ret = ((ret == AVERROR(EAGAIN)) ? 0 : -1); > + return ret; > +} > + > +int main(int argc, char *argv[]) > +{ > + int ret, size; > + FILE *fin = NULL, *fout = NULL; > + AVFrame *sw_frame = NULL, *hw_frame = NULL; > + AVCodecContext *avctx = NULL; > + FilterContext *filter_ctx = NULL; > + AVCodec *codec = NULL; > + const char *enc_name = "h264_vaapi"; > + char args[512]; > + > + if (argc < 4) { < 5 > + fprintf(stderr, "Usage: %s <width> <height> <input file> <output file>\n", argv[0]); > + return -1; > + } > + > + width = atoi(argv[1]); > + height = atoi(argv[2]); > + size = width * height; > + > + if (!(fin = fopen(argv[3], "r"))) { > + fprintf(stderr, "Fail to open input file : %s\n", strerror(errno)); > + ret = -1; > + goto close; > + } > + if (!(fout = fopen(argv[4], "w+b"))) { > + fprintf(stderr, "Fail to open output file : %s\n", strerror(errno)); > + ret = -1; > + goto close; > + } > + > + av_register_all(); > + avfilter_register_all(); > + > + ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, > + NULL, NULL, 0); > + if (ret < 0) { > + fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(ret)); > + goto close; > + } > + > + if (!(codec = avcodec_find_encoder_by_name(enc_name))) { > + fprintf(stderr, "Could not find encoder.\n"); > + ret = -1; > + goto close; > + } > + > + if (!(avctx = avcodec_alloc_context3(codec))) { > + ret = AVERROR(ENOMEM); > + goto close; > + } > + > + avctx->width = width; > + avctx->height = height; > + avctx->time_base = (AVRational){1, 25}; > + avctx->framerate = (AVRational){25, 1}; > + avctx->sample_aspect_ratio = (AVRational){1, 1}; > + avctx->pix_fmt = AV_PIX_FMT_VAAPI; > + > + /* create filters and binding HWDevice */ > + snprintf(args, sizeof(args), > + "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d:frame_rate=%d/%d", > + avctx->width, avctx->height, AV_PIX_FMT_NV12, > + avctx->time_base.num, avctx->time_base.den, > + avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, > + avctx->framerate.num, avctx->framerate.den); > + > + if (!(filter_ctx = av_malloc(sizeof(*filter_ctx)))) { > + ret = AVERROR(ENOMEM); > + goto close; > + } > + > + if ((ret = init_filter(filter_ctx, args, hw_device_ctx)) < 0) { > + fprintf(stderr, "Failed to initialize the filtering context.\n"); > + goto close; > + } > + > + avctx->hw_frames_ctx = av_buffer_ref(av_buffersink_get_hw_frames_ctx > + (filter_ctx->buffersink_ctx)); > + if (!avctx->hw_frames_ctx) { > + ret = AVERROR(ENOMEM); > + goto close; > + } > + > + if ((ret = avcodec_open2(avctx, codec, NULL)) < 0) { > + fprintf(stderr, "Cannot open video encoder codec. Error code: %s\n", av_err2str(ret)); > + goto close; > + } > + > + while (1) { > + if (!(sw_frame = av_frame_alloc())) { > + ret = AVERROR(ENOMEM); > + goto close; > + } > + sw_frame->width = width; > + sw_frame->height = height; > + sw_frame->format = AV_PIX_FMT_NV12; > + if ((ret = av_frame_get_buffer(sw_frame, 32)) < 0) > + goto close; > + if ((ret = fread((uint8_t*)(sw_frame->data[0]), size, 1, fin)) <= 0) > + break; > + if ((ret = fread((uint8_t*)(sw_frame->data[1]), size/2, 1, fin)) <= 0) > + break; > + /* push the sw frame into the filtergraph */ > + ret = av_buffersrc_add_frame_flags(filter_ctx->buffersrc_ctx, sw_frame, 0); > + if (ret < 0) { > + fprintf(stderr, "Error while feeding the filtergraph. Error code: %s\n", av_err2str(ret)); > + goto close; > + } > + /* pull hw frames from the filtergraph */ > + while (1) { > + if (!(hw_frame = av_frame_alloc())) { > + ret = AVERROR(ENOMEM); > + goto close; > + } > + if ((ret = (av_buffersink_get_frame(filter_ctx->buffersink_ctx, hw_frame))) < 0) { > + /* if no more frames for output - returns AVERROR(EAGAIN) > + * if flushed and no more frames for output - returns AVERROR_EOF > + * rewrite retcode to 0 to show it as normal procedure completion > + */ > + if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) > + ret = 0; > + av_frame_free(&hw_frame); > + break; > + } > + > + if ((ret = (encode_write(avctx, hw_frame, fout))) < 0) { > + fprintf(stderr, "Failed to encode.\n"); > + goto close; > + } > + av_frame_free(&hw_frame); > + } > + av_frame_free(&sw_frame); > + } > + > + /* flush encode */ > + ret = encode_write(avctx, NULL, fout); > + > +close: > + if (fin) > + fclose(fin); > + if (fout) > + fclose(fout); > + if (sw_frame) > + av_frame_free(&sw_frame); > + if (hw_frame) > + av_frame_free(&hw_frame); > + if (avctx) > + avcodec_free_context(&avctx); > + if (filter_ctx) { > + avfilter_free(filter_ctx->buffersrc_ctx); > + avfilter_free(filter_ctx->buffersink_ctx); > + avfilter_graph_free(&(filter_ctx->filter_graph)); > + av_free(filter_ctx); > + } > + if (hw_device_ctx) > + av_buffer_unref(&hw_device_ctx); These free functions don't require a check - they accept and do nothing with a null pointer. > + > + return ret; This ends up returning -1 from the program when everything worked, which is a bit odd. > +} > -- > 2.14.1 >
diff --git a/configure b/configure index 1b0f064607..2df0205e09 100755 --- a/configure +++ b/configure @@ -1524,6 +1524,7 @@ EXAMPLE_LIST=" scaling_video_example transcode_aac_example transcoding_example + vaapi_encode_example " EXTERNAL_AUTODETECT_LIBRARY_LIST=" @@ -3294,6 +3295,7 @@ resampling_audio_example_deps="avutil swresample" scaling_video_example_deps="avutil swscale" transcode_aac_example_deps="avcodec avformat swresample" transcoding_example_deps="avfilter avcodec avformat avutil" +vaapi_encode_example_deps="avfilter avcodec avformat avutil" # EXTRALIBS_LIST cpu_init_extralibs="pthreads_extralibs" diff --git a/doc/examples/Makefile b/doc/examples/Makefile index 58afd71b85..da5af36532 100644 --- a/doc/examples/Makefile +++ b/doc/examples/Makefile @@ -19,6 +19,7 @@ EXAMPLES-$(CONFIG_RESAMPLING_AUDIO_EXAMPLE) += resampling_audio EXAMPLES-$(CONFIG_SCALING_VIDEO_EXAMPLE) += scaling_video EXAMPLES-$(CONFIG_TRANSCODE_AAC_EXAMPLE) += transcode_aac EXAMPLES-$(CONFIG_TRANSCODING_EXAMPLE) += transcoding +EXAMPLES-$(CONFIG_VAAPI_ENCODE_EXAMPLE) += vaapi_encode EXAMPLES := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)$(EXESUF)) EXAMPLES_G := $(EXAMPLES-yes:%=doc/examples/%$(PROGSSUF)_g$(EXESUF)) diff --git a/doc/examples/vaapi_encode.c b/doc/examples/vaapi_encode.c new file mode 100644 index 0000000000..02b1ac5a4a --- /dev/null +++ b/doc/examples/vaapi_encode.c @@ -0,0 +1,308 @@ +/* + * Video Acceleration API (video encoding) encode sample + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * Intel VAAPI-accelerated encoding example. + * + * @example vaapi_encode.c + * This example shows how to do VAAPI-accelerated encoding. now only support NV12 + * raw file, usage like: vaapi_enc 1920 1080 input.yuv output.h264 + */ + +#include <stdio.h> +#include <string.h> +#include <errno.h> + +#include <libavcodec/avcodec.h> +#include <libavformat/avformat.h> +#include <libavfilter/avfiltergraph.h> +#include <libavfilter/buffersink.h> +#include <libavfilter/buffersrc.h> +#include <libavutil/pixdesc.h> +#include <libavutil/hwcontext.h> + +typedef struct FilterContext { + AVFilterContext *buffersink_ctx; + AVFilterContext *buffersrc_ctx; + AVFilterGraph *filter_graph; +} FilterContext; + +static int width, height; +static AVBufferRef *hw_device_ctx = NULL; + +static int init_filter(FilterContext *filter_ctx, char *args, AVBufferRef *hw_device_ctx) +{ + char filter_spec[] = "format=nv12,hwupload"; + int ret = 0, i = 0; + const AVFilter *buffersrc, *buffersink; + AVFilterContext *buffersrc_ctx, *buffersink_ctx; + AVFilterInOut *outputs = avfilter_inout_alloc(); + AVFilterInOut *inputs = avfilter_inout_alloc(); + AVFilterGraph *filter_graph = avfilter_graph_alloc(); + + buffersrc = avfilter_get_by_name("buffer"); + buffersink = avfilter_get_by_name("buffersink"); + if (!buffersrc || !buffersink) { + av_log(NULL, AV_LOG_ERROR, "filtering source or sink element not found\n"); + ret = AVERROR_UNKNOWN; + goto fail; + } + + ret = avfilter_graph_create_filter(&buffersrc_ctx, buffersrc, "in", + args, NULL, filter_graph); + if (ret < 0) { + av_log(NULL, AV_LOG_ERROR, "Cannot create buffer source. Error code:%s\n", av_err2str(ret)); + goto fail; + } + ret = avfilter_graph_create_filter(&buffersink_ctx, buffersink, "out", + NULL, NULL, filter_graph); + if (ret < 0) { + av_log(NULL, AV_LOG_ERROR, "Cannot create buffer sink. Error code:%s\n", av_err2str(ret)); + goto fail; + } + + outputs->name = av_strdup("in"); + outputs->filter_ctx = buffersrc_ctx; + outputs->pad_idx = 0; + outputs->next = NULL; + inputs->name = av_strdup("out"); + inputs->filter_ctx = buffersink_ctx; + inputs->pad_idx = 0; + inputs->next = NULL; + if (!outputs->name || !inputs->name) { + ret = AVERROR(ENOMEM); + goto fail; + } + + if ((ret = avfilter_graph_parse_ptr(filter_graph, filter_spec, + &inputs, &outputs, NULL)) < 0) { + av_log(NULL, AV_LOG_ERROR, "Error code: %s\n", av_err2str(ret)); + goto fail; + } + + if (hw_device_ctx) { + for (i = 0; i < filter_graph->nb_filters; i++) { + filter_graph->filters[i]->hw_device_ctx = av_buffer_ref(hw_device_ctx); + } + } + + if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0) { + av_log(NULL, AV_LOG_ERROR, "Fail to config filter graph. Error code: %s\n", av_err2str(ret)); + goto fail; + } + + filter_ctx->buffersrc_ctx = buffersrc_ctx; + filter_ctx->buffersink_ctx = buffersink_ctx; + filter_ctx->filter_graph = filter_graph; + +fail: + avfilter_inout_free(&inputs); + avfilter_inout_free(&outputs); + return ret; +} + +static int encode_write(AVCodecContext *avctx, AVFrame *frame, FILE *fout) +{ + int ret = 0; + AVPacket enc_pkt; + + av_init_packet(&enc_pkt); + enc_pkt.data = NULL; + enc_pkt.size = 0; + + if ((ret = avcodec_send_frame(avctx, frame)) < 0) { + fprintf(stderr, "Error code: %s\n", av_err2str(ret)); + goto end; + } + while (1) { + ret = avcodec_receive_packet(avctx, &enc_pkt); + if (ret) + break; + + enc_pkt.stream_index = 0; + ret = fwrite(enc_pkt.data, enc_pkt.size, 1, fout); + } + +end: + ret = ((ret == AVERROR(EAGAIN)) ? 0 : -1); + return ret; +} + +int main(int argc, char *argv[]) +{ + int ret, size; + FILE *fin = NULL, *fout = NULL; + AVFrame *sw_frame = NULL, *hw_frame = NULL; + AVCodecContext *avctx = NULL; + FilterContext *filter_ctx = NULL; + AVCodec *codec = NULL; + const char *enc_name = "h264_vaapi"; + char args[512]; + + if (argc < 4) { + fprintf(stderr, "Usage: %s <width> <height> <input file> <output file>\n", argv[0]); + return -1; + } + + width = atoi(argv[1]); + height = atoi(argv[2]); + size = width * height; + + if (!(fin = fopen(argv[3], "r"))) { + fprintf(stderr, "Fail to open input file : %s\n", strerror(errno)); + ret = -1; + goto close; + } + if (!(fout = fopen(argv[4], "w+b"))) { + fprintf(stderr, "Fail to open output file : %s\n", strerror(errno)); + ret = -1; + goto close; + } + + av_register_all(); + avfilter_register_all(); + + ret = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, + NULL, NULL, 0); + if (ret < 0) { + fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(ret)); + goto close; + } + + if (!(codec = avcodec_find_encoder_by_name(enc_name))) { + fprintf(stderr, "Could not find encoder.\n"); + ret = -1; + goto close; + } + + if (!(avctx = avcodec_alloc_context3(codec))) { + ret = AVERROR(ENOMEM); + goto close; + } + + avctx->width = width; + avctx->height = height; + avctx->time_base = (AVRational){1, 25}; + avctx->framerate = (AVRational){25, 1}; + avctx->sample_aspect_ratio = (AVRational){1, 1}; + avctx->pix_fmt = AV_PIX_FMT_VAAPI; + + /* create filters and binding HWDevice */ + snprintf(args, sizeof(args), + "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d:frame_rate=%d/%d", + avctx->width, avctx->height, AV_PIX_FMT_NV12, + avctx->time_base.num, avctx->time_base.den, + avctx->sample_aspect_ratio.num, avctx->sample_aspect_ratio.den, + avctx->framerate.num, avctx->framerate.den); + + if (!(filter_ctx = av_malloc(sizeof(*filter_ctx)))) { + ret = AVERROR(ENOMEM); + goto close; + } + + if ((ret = init_filter(filter_ctx, args, hw_device_ctx)) < 0) { + fprintf(stderr, "Failed to initialize the filtering context.\n"); + goto close; + } + + avctx->hw_frames_ctx = av_buffer_ref(av_buffersink_get_hw_frames_ctx + (filter_ctx->buffersink_ctx)); + if (!avctx->hw_frames_ctx) { + ret = AVERROR(ENOMEM); + goto close; + } + + if ((ret = avcodec_open2(avctx, codec, NULL)) < 0) { + fprintf(stderr, "Cannot open video encoder codec. Error code: %s\n", av_err2str(ret)); + goto close; + } + + while (1) { + if (!(sw_frame = av_frame_alloc())) { + ret = AVERROR(ENOMEM); + goto close; + } + sw_frame->width = width; + sw_frame->height = height; + sw_frame->format = AV_PIX_FMT_NV12; + if ((ret = av_frame_get_buffer(sw_frame, 32)) < 0) + goto close; + if ((ret = fread((uint8_t*)(sw_frame->data[0]), size, 1, fin)) <= 0) + break; + if ((ret = fread((uint8_t*)(sw_frame->data[1]), size/2, 1, fin)) <= 0) + break; + /* push the sw frame into the filtergraph */ + ret = av_buffersrc_add_frame_flags(filter_ctx->buffersrc_ctx, sw_frame, 0); + if (ret < 0) { + fprintf(stderr, "Error while feeding the filtergraph. Error code: %s\n", av_err2str(ret)); + goto close; + } + /* pull hw frames from the filtergraph */ + while (1) { + if (!(hw_frame = av_frame_alloc())) { + ret = AVERROR(ENOMEM); + goto close; + } + if ((ret = (av_buffersink_get_frame(filter_ctx->buffersink_ctx, hw_frame))) < 0) { + /* if no more frames for output - returns AVERROR(EAGAIN) + * if flushed and no more frames for output - returns AVERROR_EOF + * rewrite retcode to 0 to show it as normal procedure completion + */ + if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) + ret = 0; + av_frame_free(&hw_frame); + break; + } + + if ((ret = (encode_write(avctx, hw_frame, fout))) < 0) { + fprintf(stderr, "Failed to encode.\n"); + goto close; + } + av_frame_free(&hw_frame); + } + av_frame_free(&sw_frame); + } + + /* flush encode */ + ret = encode_write(avctx, NULL, fout); + +close: + if (fin) + fclose(fin); + if (fout) + fclose(fout); + if (sw_frame) + av_frame_free(&sw_frame); + if (hw_frame) + av_frame_free(&hw_frame); + if (avctx) + avcodec_free_context(&avctx); + if (filter_ctx) { + avfilter_free(filter_ctx->buffersrc_ctx); + avfilter_free(filter_ctx->buffersink_ctx); + avfilter_graph_free(&(filter_ctx->filter_graph)); + av_free(filter_ctx); + } + if (hw_device_ctx) + av_buffer_unref(&hw_device_ctx); + + return ret; +}