Signed-off-by: Brad Hards <br...@frogmouth.net> --- configure | 2 + doc/examples/.gitignore | 1 + doc/examples/Makefile | 1 + doc/examples/Makefile.example | 1 + doc/examples/encode_unregistered.c | 205 +++++++++++++++++++++++++++++ 5 files changed, 210 insertions(+) create mode 100644 doc/examples/encode_unregistered.c
diff --git a/configure b/configure index 6580859ef2..1fad5b29ca 100755 --- a/configure +++ b/configure @@ -1708,6 +1708,7 @@ EXAMPLE_LIST=" demuxing_decoding_example encode_audio_example encode_video_example + encode_unregistered_example extract_mvs_example filter_audio_example filtering_audio_example @@ -3708,6 +3709,7 @@ decode_video_example_deps="avcodec avutil" demuxing_decoding_example_deps="avcodec avformat avutil" encode_audio_example_deps="avcodec avutil" encode_video_example_deps="avcodec avutil" +encode_unregistered_example_deps="avcodec avutil" extract_mvs_example_deps="avcodec avformat avutil" filter_audio_example_deps="avfilter avutil" filtering_audio_example_deps="avfilter avcodec avformat avutil" diff --git a/doc/examples/.gitignore b/doc/examples/.gitignore index 44960e1de7..d3f7739e68 100644 --- a/doc/examples/.gitignore +++ b/doc/examples/.gitignore @@ -4,6 +4,7 @@ /decode_video /demuxing_decoding /encode_audio +/encode_unregistered /encode_video /extract_mvs /filter_audio diff --git a/doc/examples/Makefile b/doc/examples/Makefile index 81bfd34d5d..00ef609c7b 100644 --- a/doc/examples/Makefile +++ b/doc/examples/Makefile @@ -5,6 +5,7 @@ EXAMPLES-$(CONFIG_DECODE_VIDEO_EXAMPLE) += decode_video EXAMPLES-$(CONFIG_DEMUXING_DECODING_EXAMPLE) += demuxing_decoding EXAMPLES-$(CONFIG_ENCODE_AUDIO_EXAMPLE) += encode_audio EXAMPLES-$(CONFIG_ENCODE_VIDEO_EXAMPLE) += encode_video +EXAMPLES-$(CONFIG_ENCODE_UNREGISTERED_EXAMPLE) += encode_unregistered EXAMPLES-$(CONFIG_EXTRACT_MVS_EXAMPLE) += extract_mvs EXAMPLES-$(CONFIG_FILTER_AUDIO_EXAMPLE) += filter_audio EXAMPLES-$(CONFIG_FILTERING_AUDIO_EXAMPLE) += filtering_audio diff --git a/doc/examples/Makefile.example b/doc/examples/Makefile.example index a232d97f98..f26a6597f8 100644 --- a/doc/examples/Makefile.example +++ b/doc/examples/Makefile.example @@ -18,6 +18,7 @@ EXAMPLES= avio_list_dir \ demuxing_decoding \ encode_audio \ encode_video \ + encode_unregistered \ extract_mvs \ filtering_video \ filtering_audio \ diff --git a/doc/examples/encode_unregistered.c b/doc/examples/encode_unregistered.c new file mode 100644 index 0000000000..e9309460c0 --- /dev/null +++ b/doc/examples/encode_unregistered.c @@ -0,0 +1,205 @@ +/* + * Copyright (c) 2001 Fabrice Bellard + * + * 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 + * video encoding with SEI (user unregistered) API example + * + * @example encode_unregistered.c + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <libavcodec/avcodec.h> + +#include <libavutil/opt.h> +#include <libavutil/imgutils.h> + +static void encode(AVCodecContext *enc_ctx, AVFrame *frame, AVPacket *pkt, + FILE *outfile) +{ + int ret; + + /* send the frame to the encoder */ + if (frame) + printf("Send frame %3" PRId64 "\n", frame->pts); + + ret = avcodec_send_frame(enc_ctx, frame); + if (ret < 0) + { + fprintf(stderr, "Error sending a frame for encoding\n"); + exit(1); + } + + while (ret >= 0) + { + ret = avcodec_receive_packet(enc_ctx, pkt); + if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF) + return; + else if (ret < 0) + { + fprintf(stderr, "Error during encoding\n"); + exit(1); + } + + printf("Write packet %3" PRId64 " (size=%5d)\n", pkt->pts, pkt->size); + fwrite(pkt->data, 1, pkt->size, outfile); + av_packet_unref(pkt); + } +} + +int main(int argc, char **argv) +{ + const char *filename, *codec_name; + const AVCodec *codec; + AVCodecContext *c = NULL; + int i, ret, x, y; + FILE *f; + AVFrame *frame; + AVPacket *pkt; + AVFrameSideData *side_data; + // This is from MISB ST 2101 + char sei_message[] = {0xa5, 0x50, 0x52, 0xaf, 0x52, 0x16, 0x5f, 0x45, + 0xa3, 0x18, 0x1c, 0xfc, 0x7a, 0xbb, 0xc2, 0x67, + 0x01, 0x70, 0xF5, 0x92, 0xF0, 0x23, 0x73, 0x36, + 0x4A, 0xF8, 0xAA, 0x91, 0x62, 0xC0, 0x0F, 0x2E, + 0xB2, 0xDA, 0x16, 0xB7, 0x43, 0x41, 0x00, 0x08, + 0x41, 0xA0, 0xBE, 0x36, 0x5B, 0x5A, 0xB9, 0x6A, + 0x36, 0x45}; + + if (argc <= 2) { + fprintf(stderr, "Usage: %s <output file> <codec name>\n", argv[0]); + exit(0); + } + filename = argv[1]; + codec_name = argv[2]; + + codec = avcodec_find_encoder_by_name(codec_name); + if (!codec) { + fprintf(stderr, "Codec '%s' not found\n", codec_name); + exit(1); + } + + c = avcodec_alloc_context3(codec); + if (!c) + { + fprintf(stderr, "Could not allocate video codec context\n"); + exit(1); + } + + pkt = av_packet_alloc(); + if (!pkt) + exit(1); + + c->bit_rate = 400000; + c->width = 352; + c->height = 288; + /* frames per second */ + c->time_base = (AVRational){1, 25}; + c->framerate = (AVRational){25, 1}; + c->gop_size = 10; + c->max_b_frames = 0; + c->pix_fmt = AV_PIX_FMT_YUV420P; + if (codec->id == AV_CODEC_ID_H264) + av_opt_set(c->priv_data, "preset", "medium", 0); + + /* open it */ + ret = avcodec_open2(c, codec, NULL); + if (ret < 0) + { + fprintf(stderr, "Could not open codec: %s\n", av_err2str(ret)); + exit(1); + } + + f = fopen(filename, "wb"); + if (!f) + { + fprintf(stderr, "Could not open %s\n", filename); + exit(1); + } + + frame = av_frame_alloc(); + if (!frame) + { + fprintf(stderr, "Could not allocate video frame\n"); + exit(1); + } + frame->format = c->pix_fmt; + frame->width = c->width; + frame->height = c->height; + side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_SEI_UNREGISTERED, sizeof(sei_message)); + if (!side_data) + { + fprintf(stderr, "Could not allocate the video frame side data\n"); + exit(1); + } + memcpy(side_data->data, sei_message, side_data->size); + + ret = av_frame_get_buffer(frame, 0); + if (ret < 0) + { + fprintf(stderr, "Could not allocate the video frame data\n"); + exit(1); + } + + /* encode 1 second of video */ + for (i = 0; i < 25; i++) + { + fflush(stdout); + + /* make sure the frame data is writable */ + ret = av_frame_make_writable(frame); + if (ret < 0) + exit(1); + + /* prepare a dummy image */ + /* Y */ + for (y = 0; y < c->height; y++) { + for (x = 0; x < c->width; x++) { + frame->data[0][y * frame->linesize[0] + x] = x + y + i * 3; + } + } + + /* Cb and Cr */ + for (y = 0; y < c->height/2; y++) { + for (x = 0; x < c->width/2; x++) { + frame->data[1][y * frame->linesize[1] + x] = 128 + y + i * 2; + frame->data[2][y * frame->linesize[2] + x] = 64 + x + i * 5; + } + } + + frame->pts = i; + encode(c, frame, pkt, f); + } + + /* flush the encoder */ + encode(c, NULL, pkt, f); + fclose(f); + + avcodec_free_context(&c); + av_frame_free(&frame); + av_packet_free(&pkt); + + return 0; +} -- 2.27.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".