136 строки
4.2 KiB
C
136 строки
4.2 KiB
C
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "aom/aom_encoder.h"
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#include "aom/aomcx.h"
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#include "../tools_common.h"
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#include "../video_writer.h"
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static const char *exec_name;
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void usage_exit(void) {
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fprintf(stderr,
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"lossless_encoder: Example demonstrating lossless "
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"encoding feature. Supports raw input only.\n");
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fprintf(stderr, "Usage: %s <width> <height> <infile> <outfile>\n", exec_name);
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exit(EXIT_FAILURE);
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}
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static int encode_frame(aom_codec_ctx_t *codec, aom_image_t *img,
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int frame_index, int flags, AvxVideoWriter *writer) {
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int got_pkts = 0;
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aom_codec_iter_t iter = NULL;
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const aom_codec_cx_pkt_t *pkt = NULL;
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const aom_codec_err_t res =
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aom_codec_encode(codec, img, frame_index, 1, flags, AOM_DL_GOOD_QUALITY);
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if (res != AOM_CODEC_OK) die_codec(codec, "Failed to encode frame");
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while ((pkt = aom_codec_get_cx_data(codec, &iter)) != NULL) {
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got_pkts = 1;
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if (pkt->kind == AOM_CODEC_CX_FRAME_PKT) {
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const int keyframe = (pkt->data.frame.flags & AOM_FRAME_IS_KEY) != 0;
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if (!aom_video_writer_write_frame(writer, pkt->data.frame.buf,
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pkt->data.frame.sz,
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pkt->data.frame.pts)) {
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die_codec(codec, "Failed to write compressed frame");
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}
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printf(keyframe ? "K" : ".");
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fflush(stdout);
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}
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}
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return got_pkts;
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}
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int main(int argc, char **argv) {
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FILE *infile = NULL;
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aom_codec_ctx_t codec;
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aom_codec_enc_cfg_t cfg;
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int frame_count = 0;
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aom_image_t raw;
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aom_codec_err_t res;
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AvxVideoInfo info = { 0 };
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AvxVideoWriter *writer = NULL;
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const AvxInterface *encoder = NULL;
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const int fps = 30;
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exec_name = argv[0];
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if (argc < 5) die("Invalid number of arguments");
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encoder = get_aom_encoder_by_name("av1");
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if (!encoder) die("Unsupported codec.");
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info.codec_fourcc = encoder->fourcc;
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info.frame_width = strtol(argv[1], NULL, 0);
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info.frame_height = strtol(argv[2], NULL, 0);
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info.time_base.numerator = 1;
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info.time_base.denominator = fps;
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if (info.frame_width <= 0 || info.frame_height <= 0 ||
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(info.frame_width % 2) != 0 || (info.frame_height % 2) != 0) {
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die("Invalid frame size: %dx%d", info.frame_width, info.frame_height);
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}
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if (!aom_img_alloc(&raw, AOM_IMG_FMT_I420, info.frame_width,
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info.frame_height, 1)) {
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die("Failed to allocate image.");
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}
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printf("Using %s\n", aom_codec_iface_name(encoder->codec_interface()));
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res = aom_codec_enc_config_default(encoder->codec_interface(), &cfg, 0);
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if (res) die_codec(&codec, "Failed to get default codec config.");
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cfg.g_w = info.frame_width;
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cfg.g_h = info.frame_height;
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cfg.g_timebase.num = info.time_base.numerator;
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cfg.g_timebase.den = info.time_base.denominator;
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writer = aom_video_writer_open(argv[4], kContainerIVF, &info);
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if (!writer) die("Failed to open %s for writing.", argv[4]);
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if (!(infile = fopen(argv[3], "rb")))
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die("Failed to open %s for reading.", argv[3]);
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if (aom_codec_enc_init(&codec, encoder->codec_interface(), &cfg, 0))
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die_codec(&codec, "Failed to initialize encoder");
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if (aom_codec_control_(&codec, AV1E_SET_LOSSLESS, 1))
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die_codec(&codec, "Failed to use lossless mode");
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// Encode frames.
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while (aom_img_read(&raw, infile)) {
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encode_frame(&codec, &raw, frame_count++, 0, writer);
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}
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// Flush encoder.
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while (encode_frame(&codec, NULL, -1, 0, writer)) {
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}
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printf("\n");
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fclose(infile);
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printf("Processed %d frames.\n", frame_count);
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aom_img_free(&raw);
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if (aom_codec_destroy(&codec)) die_codec(&codec, "Failed to destroy codec.");
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aom_video_writer_close(writer);
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return EXIT_SUCCESS;
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}
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