1b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian/* 2b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian * Copyright (c) 2010 The WebM project authors. All Rights Reserved. 3b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian * 4b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian * Use of this source code is governed by a BSD-style license 5b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian * that can be found in the LICENSE file in the root of the source 6b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian * tree. An additional intellectual property rights grant can be found 7b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian * in the file PATENTS. All contributing project authors may 8b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian * be found in the AUTHORS file in the root of the source tree. 9b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian */ 10b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 11b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 12b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// VP8 Set Reference Frame 13b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// ======================= 14b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// 15b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// This is an example demonstrating how to overwrite the VP8 encoder's 16b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// internal reference frame. In the sample we set the last frame to the 17b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// current frame. If this is done at a cut scene it will avoid a keyframe. 18b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// This technique could be used to bounce between two cameras. 19b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// 20b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// Note that the decoder would also have to set the reference frame to the 21b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// same value on the same frame, or the video will become corrupt. 22b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// 23b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// Usage 24b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// ----- 25b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// This example adds a single argument to the `simple_encoder` example, 26b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// which specifies the frame number to update the reference frame on. 27b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// The parameter is parsed as follows: 28b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// 29b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// 30b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// Extra Variables 31b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// --------------- 32b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// This example maintains the frame number passed on the command line 33b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// in the `update_frame_num` variable. 34b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// 35b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// 36b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// Configuration 37b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// ------------- 38b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// 39b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// The reference frame is updated on the frame specified on the command 40b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// line. 41b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// 42b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// Observing The Effects 43b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// --------------------- 44b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// Use the `simple_encoder` example to encode a sample with a cut scene. 45b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// Determine the frame number of the cut scene by looking for a generated 46b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// key-frame (indicated by a 'K'). Supply that frame number as an argument 47b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian// to this example, and observe that no key-frame is generated. 48b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 49b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include <stdio.h> 50b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include <stdlib.h> 51b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include <string.h> 52b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 53b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#define VPX_CODEC_DISABLE_COMPAT 1 54b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include "vpx/vp8cx.h" 55b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include "vpx/vpx_encoder.h" 56b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 57b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include "./tools_common.h" 58b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian#include "./video_writer.h" 59b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 60b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianstatic const char *exec_name; 61b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 62b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianvoid usage_exit() { 63b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian fprintf(stderr, "Usage: %s <width> <height> <infile> <outfile> <frame>\n", 64b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian exec_name); 65b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian exit(EXIT_FAILURE); 66b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian} 67b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 68b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianstatic void encode_frame(vpx_codec_ctx_t *codec, 69b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vpx_image_t *img, 70b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int frame_index, 71b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian VpxVideoWriter *writer) { 72b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vpx_codec_iter_t iter = NULL; 73b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const vpx_codec_cx_pkt_t *pkt = NULL; 74b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const vpx_codec_err_t res = vpx_codec_encode(codec, img, frame_index, 1, 0, 75b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian VPX_DL_GOOD_QUALITY); 76b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (res != VPX_CODEC_OK) 77b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die_codec(codec, "Failed to encode frame"); 78b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 79b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian while ((pkt = vpx_codec_get_cx_data(codec, &iter)) != NULL) { 80b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (pkt->kind == VPX_CODEC_CX_FRAME_PKT) { 81b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int keyframe = (pkt->data.frame.flags & VPX_FRAME_IS_KEY) != 0; 82b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (!vpx_video_writer_write_frame(writer, 83b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian pkt->data.frame.buf, 84b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian pkt->data.frame.sz, 85b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian pkt->data.frame.pts)) { 86b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die_codec(codec, "Failed to write compressed frame"); 87b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } 88b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 89b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian printf(keyframe ? "K" : "."); 90b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian fflush(stdout); 91b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } 92b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } 93b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian} 94b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 95b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanianint main(int argc, char **argv) { 96b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian FILE *infile = NULL; 97b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vpx_codec_ctx_t codec = {0}; 98b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vpx_codec_enc_cfg_t cfg = {0}; 99b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int frame_count = 0; 100b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vpx_image_t raw; 101b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vpx_codec_err_t res; 102b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian VpxVideoInfo info = {0}; 103b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian VpxVideoWriter *writer = NULL; 104b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const VpxInterface *encoder = NULL; 105b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian int update_frame_num = 0; 106b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int fps = 30; // TODO(dkovalev) add command line argument 107b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian const int bitrate = 200; // kbit/s TODO(dkovalev) add command line argument 108b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 109b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian exec_name = argv[0]; 110b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 111b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (argc != 6) 112b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die("Invalid number of arguments"); 113b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 114b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian // TODO(dkovalev): add vp9 support and rename the file accordingly 115b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian encoder = get_vpx_encoder_by_name("vp8"); 116b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (!encoder) 117b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die("Unsupported codec."); 118b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 119b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian update_frame_num = atoi(argv[5]); 120b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (!update_frame_num) 121b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die("Couldn't parse frame number '%s'\n", argv[5]); 122b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 123b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian info.codec_fourcc = encoder->fourcc; 124b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian info.frame_width = strtol(argv[1], NULL, 0); 125b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian info.frame_height = strtol(argv[2], NULL, 0); 126b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian info.time_base.numerator = 1; 127b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian info.time_base.denominator = fps; 128b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 129b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (info.frame_width <= 0 || 130b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian info.frame_height <= 0 || 131b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian (info.frame_width % 2) != 0 || 132b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian (info.frame_height % 2) != 0) { 133b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die("Invalid frame size: %dx%d", info.frame_width, info.frame_height); 134b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } 135b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 136b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, info.frame_width, 137b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian info.frame_height, 1)) { 138b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die("Failed to allocate image."); 139b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } 140b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 141b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian printf("Using %s\n", vpx_codec_iface_name(encoder->interface())); 142b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 143b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian res = vpx_codec_enc_config_default(encoder->interface(), &cfg, 0); 144b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (res) 145b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die_codec(&codec, "Failed to get default codec config."); 146b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 147b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian cfg.g_w = info.frame_width; 148b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian cfg.g_h = info.frame_height; 149b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian cfg.g_timebase.num = info.time_base.numerator; 150b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian cfg.g_timebase.den = info.time_base.denominator; 151b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian cfg.rc_target_bitrate = bitrate; 152b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 153b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian writer = vpx_video_writer_open(argv[4], kContainerIVF, &info); 154b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (!writer) 155b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die("Failed to open %s for writing.", argv[4]); 156b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 157b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (!(infile = fopen(argv[3], "rb"))) 158b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die("Failed to open %s for reading.", argv[3]); 159b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 160b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (vpx_codec_enc_init(&codec, encoder->interface(), &cfg, 0)) 161b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die_codec(&codec, "Failed to initialize encoder"); 162b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 163b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian while (vpx_img_read(&raw, infile)) { 164b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (frame_count + 1 == update_frame_num) { 165b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vpx_ref_frame_t ref; 166b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian ref.frame_type = VP8_LAST_FRAME; 167b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian ref.img = raw; 168b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (vpx_codec_control(&codec, VP8_SET_REFERENCE, &ref)) 169b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die_codec(&codec, "Failed to set reference frame"); 170b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } 171b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 172b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian encode_frame(&codec, &raw, frame_count++, writer); 173b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian } 174b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian encode_frame(&codec, NULL, -1, writer); 175b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 176b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian printf("\n"); 177b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian fclose(infile); 178b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian printf("Processed %d frames.\n", frame_count); 179b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 180b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vpx_img_free(&raw); 181b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian if (vpx_codec_destroy(&codec)) 182b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian die_codec(&codec, "Failed to destroy codec."); 183b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 184b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian vpx_video_writer_close(writer); 185b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian 186b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian return EXIT_SUCCESS; 187b08e2e23eec181e9951df33cd704ac294c5407b6Vignesh Venkatasubramanian} 188