2 * Copyright (c) 2014 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
15 #include "vpx/vpx_encoder.h"
16 #include "vpx/vp8cx.h"
18 #include "./tools_common.h"
19 #include "./video_writer.h"
21 static const char *exec_name;
24 fprintf(stderr, "vp9_lossless_encoder: Example demonstrating VP9 lossless "
25 "encoding feature. Supports raw input only.\n");
26 fprintf(stderr, "Usage: %s <width> <height> <infile> <outfile>\n", exec_name);
30 static int encode_frame(vpx_codec_ctx_t *codec,
34 VpxVideoWriter *writer) {
36 vpx_codec_iter_t iter = NULL;
37 const vpx_codec_cx_pkt_t *pkt = NULL;
38 const vpx_codec_err_t res = vpx_codec_encode(codec, img, frame_index, 1,
39 flags, VPX_DL_GOOD_QUALITY);
40 if (res != VPX_CODEC_OK)
41 die_codec(codec, "Failed to encode frame");
43 while ((pkt = vpx_codec_get_cx_data(codec, &iter)) != NULL) {
46 if (pkt->kind == VPX_CODEC_CX_FRAME_PKT) {
47 const int keyframe = (pkt->data.frame.flags & VPX_FRAME_IS_KEY) != 0;
48 if (!vpx_video_writer_write_frame(writer,
51 pkt->data.frame.pts)) {
52 die_codec(codec, "Failed to write compressed frame");
54 printf(keyframe ? "K" : ".");
62 int main(int argc, char **argv) {
64 vpx_codec_ctx_t codec;
65 vpx_codec_enc_cfg_t cfg;
69 VpxVideoInfo info = {0};
70 VpxVideoWriter *writer = NULL;
71 const VpxInterface *encoder = NULL;
77 die("Invalid number of arguments");
79 encoder = get_vpx_encoder_by_name("vp9");
81 die("Unsupported codec.");
83 info.codec_fourcc = encoder->fourcc;
84 info.frame_width = strtol(argv[1], NULL, 0);
85 info.frame_height = strtol(argv[2], NULL, 0);
86 info.time_base.numerator = 1;
87 info.time_base.denominator = fps;
89 if (info.frame_width <= 0 ||
90 info.frame_height <= 0 ||
91 (info.frame_width % 2) != 0 ||
92 (info.frame_height % 2) != 0) {
93 die("Invalid frame size: %dx%d", info.frame_width, info.frame_height);
96 if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, info.frame_width,
97 info.frame_height, 1)) {
98 die("Failed to allocate image.");
101 printf("Using %s\n", vpx_codec_iface_name(encoder->codec_interface()));
103 res = vpx_codec_enc_config_default(encoder->codec_interface(), &cfg, 0);
105 die_codec(&codec, "Failed to get default codec config.");
107 cfg.g_w = info.frame_width;
108 cfg.g_h = info.frame_height;
109 cfg.g_timebase.num = info.time_base.numerator;
110 cfg.g_timebase.den = info.time_base.denominator;
112 writer = vpx_video_writer_open(argv[4], kContainerIVF, &info);
114 die("Failed to open %s for writing.", argv[4]);
116 if (!(infile = fopen(argv[3], "rb")))
117 die("Failed to open %s for reading.", argv[3]);
119 if (vpx_codec_enc_init(&codec, encoder->codec_interface(), &cfg, 0))
120 die_codec(&codec, "Failed to initialize encoder");
122 if (vpx_codec_control_(&codec, VP9E_SET_LOSSLESS, 1))
123 die_codec(&codec, "Failed to use lossless mode");
126 while (vpx_img_read(&raw, infile)) {
127 encode_frame(&codec, &raw, frame_count++, 0, writer);
131 while (encode_frame(&codec, NULL, -1, 0, writer)) {}
135 printf("Processed %d frames.\n", frame_count);
138 if (vpx_codec_destroy(&codec))
139 die_codec(&codec, "Failed to destroy codec.");
141 vpx_video_writer_close(writer);