| /* |
| * Video Acceleration API (video encoding) encode sample |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| /** |
| * @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_encode 1920 1080 input.yuv output.h264 |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <errno.h> |
| |
| #include <libavcodec/avcodec.h> |
| #include <libavutil/pixdesc.h> |
| #include <libavutil/hwcontext.h> |
| |
| static int width, height; |
| static AVBufferRef *hw_device_ctx = NULL; |
| |
| static int set_hwframe_ctx(AVCodecContext *ctx, AVBufferRef *hw_device_ctx) |
| { |
| AVBufferRef *hw_frames_ref; |
| AVHWFramesContext *frames_ctx = NULL; |
| int err = 0; |
| |
| if (!(hw_frames_ref = av_hwframe_ctx_alloc(hw_device_ctx))) { |
| fprintf(stderr, "Failed to create VAAPI frame context.\n"); |
| return -1; |
| } |
| frames_ctx = (AVHWFramesContext *)(hw_frames_ref->data); |
| frames_ctx->format = AV_PIX_FMT_VAAPI; |
| frames_ctx->sw_format = AV_PIX_FMT_NV12; |
| frames_ctx->width = width; |
| frames_ctx->height = height; |
| frames_ctx->initial_pool_size = 20; |
| if ((err = av_hwframe_ctx_init(hw_frames_ref)) < 0) { |
| fprintf(stderr, "Failed to initialize VAAPI frame context." |
| "Error code: %s\n",av_err2str(err)); |
| av_buffer_unref(&hw_frames_ref); |
| return err; |
| } |
| ctx->hw_frames_ctx = av_buffer_ref(hw_frames_ref); |
| if (!ctx->hw_frames_ctx) |
| err = AVERROR(ENOMEM); |
| |
| av_buffer_unref(&hw_frames_ref); |
| return err; |
| } |
| |
| 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); |
| av_packet_unref(&enc_pkt); |
| } |
| |
| end: |
| ret = ((ret == AVERROR(EAGAIN)) ? 0 : -1); |
| return ret; |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| int size, err; |
| FILE *fin = NULL, *fout = NULL; |
| AVFrame *sw_frame = NULL, *hw_frame = NULL; |
| AVCodecContext *avctx = NULL; |
| AVCodec *codec = NULL; |
| const char *enc_name = "h264_vaapi"; |
| |
| if (argc < 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)); |
| return -1; |
| } |
| if (!(fout = fopen(argv[4], "w+b"))) { |
| fprintf(stderr, "Fail to open output file : %s\n", strerror(errno)); |
| err = -1; |
| goto close; |
| } |
| |
| err = av_hwdevice_ctx_create(&hw_device_ctx, AV_HWDEVICE_TYPE_VAAPI, |
| NULL, NULL, 0); |
| if (err < 0) { |
| fprintf(stderr, "Failed to create a VAAPI device. Error code: %s\n", av_err2str(err)); |
| goto close; |
| } |
| |
| if (!(codec = avcodec_find_encoder_by_name(enc_name))) { |
| fprintf(stderr, "Could not find encoder.\n"); |
| err = -1; |
| goto close; |
| } |
| |
| if (!(avctx = avcodec_alloc_context3(codec))) { |
| err = 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; |
| |
| /* set hw_frames_ctx for encoder's AVCodecContext */ |
| if ((err = set_hwframe_ctx(avctx, hw_device_ctx)) < 0) { |
| fprintf(stderr, "Failed to set hwframe context.\n"); |
| goto close; |
| } |
| |
| if ((err = avcodec_open2(avctx, codec, NULL)) < 0) { |
| fprintf(stderr, "Cannot open video encoder codec. Error code: %s\n", av_err2str(err)); |
| goto close; |
| } |
| |
| while (1) { |
| if (!(sw_frame = av_frame_alloc())) { |
| err = AVERROR(ENOMEM); |
| goto close; |
| } |
| /* read data into software frame, and transfer them into hw frame */ |
| sw_frame->width = width; |
| sw_frame->height = height; |
| sw_frame->format = AV_PIX_FMT_NV12; |
| if ((err = av_frame_get_buffer(sw_frame, 0)) < 0) |
| goto close; |
| if ((err = fread((uint8_t*)(sw_frame->data[0]), size, 1, fin)) <= 0) |
| break; |
| if ((err = fread((uint8_t*)(sw_frame->data[1]), size/2, 1, fin)) <= 0) |
| break; |
| |
| if (!(hw_frame = av_frame_alloc())) { |
| err = AVERROR(ENOMEM); |
| goto close; |
| } |
| if ((err = av_hwframe_get_buffer(avctx->hw_frames_ctx, hw_frame, 0)) < 0) { |
| fprintf(stderr, "Error code: %s.\n", av_err2str(err)); |
| goto close; |
| } |
| if (!hw_frame->hw_frames_ctx) { |
| err = AVERROR(ENOMEM); |
| goto close; |
| } |
| if ((err = av_hwframe_transfer_data(hw_frame, sw_frame, 0)) < 0) { |
| fprintf(stderr, "Error while transferring frame data to surface." |
| "Error code: %s.\n", av_err2str(err)); |
| goto close; |
| } |
| |
| if ((err = (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 encoder */ |
| err = encode_write(avctx, NULL, fout); |
| if (err == AVERROR_EOF) |
| err = 0; |
| |
| close: |
| if (fin) |
| fclose(fin); |
| if (fout) |
| fclose(fout); |
| av_frame_free(&sw_frame); |
| av_frame_free(&hw_frame); |
| avcodec_free_context(&avctx); |
| av_buffer_unref(&hw_device_ctx); |
| |
| return err; |
| } |