+++ /dev/null
-/*
- * Copyright (c) 2010 The WebM project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree. An additional intellectual property rights grant can be found
- * in the file PATENTS. All contributing project authors may
- * be found in the AUTHORS file in the root of the source tree.
- */
-
-// Error Resiliency Features
-// =========================
-//
-// This is an example demonstrating how to enable the error resiliency
-// features of the codec.
-//
-// Configuration
-// -------------
-// Error resiliency is controlled by the g_error_resilient member of the
-// configuration structure.
-//
-// Observing The Effects
-// ---------------------
-// Use the `decode_with_drops` example to decode with frames 5-10 dropped.
-// Compare the output for a file encoded with this example versus one
-// encoded with the `simple_encoder` example.
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#define VPX_CODEC_DISABLE_COMPAT 1
-#include "vpx/vpx_encoder.h"
-#include "vpx/vp8cx.h"
-#define interface (vpx_codec_vp8_cx())
-#define fourcc 0x30385056
-
-#define IVF_FILE_HDR_SZ (32)
-#define IVF_FRAME_HDR_SZ (12)
-
-static void mem_put_le16(char *mem, unsigned int val) {
- mem[0] = val;
- mem[1] = val>>8;
-}
-
-static void mem_put_le32(char *mem, unsigned int val) {
- mem[0] = val;
- mem[1] = val>>8;
- mem[2] = val>>16;
- mem[3] = val>>24;
-}
-
-static void die(const char *fmt, ...) {
- va_list ap;
-
- va_start(ap, fmt);
- vprintf(fmt, ap);
- if(fmt[strlen(fmt)-1] != '\n')
- printf("\n");
- exit(EXIT_FAILURE);
-}
-
-static void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
- const char *detail = vpx_codec_error_detail(ctx);
-
- printf("%s: %s\n", s, vpx_codec_error(ctx));
- if(detail)
- printf(" %s\n",detail);
- exit(EXIT_FAILURE);
-}
-
-static int read_frame(FILE *f, vpx_image_t *img) {
- size_t nbytes, to_read;
- int res = 1;
-
- to_read = img->w*img->h*3/2;
- nbytes = fread(img->planes[0], 1, to_read, f);
- if(nbytes != to_read) {
- res = 0;
- if(nbytes > 0)
- printf("Warning: Read partial frame. Check your width & height!\n");
- }
- return res;
-}
-
-static void write_ivf_file_header(FILE *outfile,
- const vpx_codec_enc_cfg_t *cfg,
- int frame_cnt) {
- char header[32];
-
- if(cfg->g_pass != VPX_RC_ONE_PASS && cfg->g_pass != VPX_RC_LAST_PASS)
- return;
- header[0] = 'D';
- header[1] = 'K';
- header[2] = 'I';
- header[3] = 'F';
- mem_put_le16(header+4, 0); /* version */
- mem_put_le16(header+6, 32); /* headersize */
- mem_put_le32(header+8, fourcc); /* headersize */
- mem_put_le16(header+12, cfg->g_w); /* width */
- mem_put_le16(header+14, cfg->g_h); /* height */
- mem_put_le32(header+16, cfg->g_timebase.den); /* rate */
- mem_put_le32(header+20, cfg->g_timebase.num); /* scale */
- mem_put_le32(header+24, frame_cnt); /* length */
- mem_put_le32(header+28, 0); /* unused */
-
- (void) fwrite(header, 1, 32, outfile);
-}
-
-
-static void write_ivf_frame_header(FILE *outfile,
- const vpx_codec_cx_pkt_t *pkt)
-{
- char header[12];
- vpx_codec_pts_t pts;
-
- if(pkt->kind != VPX_CODEC_CX_FRAME_PKT)
- return;
-
- pts = pkt->data.frame.pts;
- mem_put_le32(header, (unsigned int)pkt->data.frame.sz);
- mem_put_le32(header+4, pts&0xFFFFFFFF);
- mem_put_le32(header+8, pts >> 32);
-
- (void) fwrite(header, 1, 12, outfile);
-}
-
-int main(int argc, char **argv) {
- FILE *infile, *outfile;
- vpx_codec_ctx_t codec;
- vpx_codec_enc_cfg_t cfg;
- int frame_cnt = 0;
- vpx_image_t raw;
- vpx_codec_err_t res;
- long width;
- long height;
- int frame_avail;
- int got_data;
- int flags = 0;
-
- /* Open files */
- if(argc!=5)
- die("Usage: %s <width> <height> <infile> <outfile>\n", argv[0]);
- width = strtol(argv[1], NULL, 0);
- height = strtol(argv[2], NULL, 0);
- if(width < 16 || width%2 || height <16 || height%2)
- die("Invalid resolution: %ldx%ld", width, height);
- if(!vpx_img_alloc(&raw, VPX_IMG_FMT_I420, width, height, 1))
- die("Faile to allocate image", width, height);
- if(!(outfile = fopen(argv[4], "wb")))
- die("Failed to open %s for writing", argv[4]);
-
- printf("Using %s\n",vpx_codec_iface_name(interface));
-
- /* Populate encoder configuration */
- res = vpx_codec_enc_config_default(interface, &cfg, 0);
- if(res) {
- printf("Failed to get config: %s\n", vpx_codec_err_to_string(res));
- return EXIT_FAILURE;
- }
-
- /* Update the default configuration with our settings */
- cfg.rc_target_bitrate = width * height * cfg.rc_target_bitrate
- / cfg.g_w / cfg.g_h;
- cfg.g_w = width;
- cfg.g_h = height;
-
- /* Enable error resilient mode */
- cfg.g_error_resilient = 1;
-
- write_ivf_file_header(outfile, &cfg, 0);
-
-
- /* Open input file for this encoding pass */
- if(!(infile = fopen(argv[3], "rb")))
- die("Failed to open %s for reading", argv[3]);
-
- /* Initialize codec */
- if(vpx_codec_enc_init(&codec, interface, &cfg, 0))
- die_codec(&codec, "Failed to initialize encoder");
-
- frame_avail = 1;
- got_data = 0;
- while(frame_avail || got_data) {
- vpx_codec_iter_t iter = NULL;
- const vpx_codec_cx_pkt_t *pkt;
-
- frame_avail = read_frame(infile, &raw);
- if(vpx_codec_encode(&codec, frame_avail? &raw : NULL, frame_cnt,
- 1, flags, VPX_DL_REALTIME))
- die_codec(&codec, "Failed to encode frame");
- got_data = 0;
- while( (pkt = vpx_codec_get_cx_data(&codec, &iter)) ) {
- got_data = 1;
- switch(pkt->kind) {
- case VPX_CODEC_CX_FRAME_PKT:
- write_ivf_frame_header(outfile, pkt);
- (void) fwrite(pkt->data.frame.buf, 1, pkt->data.frame.sz,
- outfile);
- break;
- default:
- break;
- }
- printf(pkt->kind == VPX_CODEC_CX_FRAME_PKT
- && (pkt->data.frame.flags & VPX_FRAME_IS_KEY)? "K":".");
- fflush(stdout);
- }
- frame_cnt++;
- }
- printf("\n");
- fclose(infile);
-
- printf("Processed %d frames.\n",frame_cnt-1);
- vpx_img_free(&raw);
- if(vpx_codec_destroy(&codec))
- die_codec(&codec, "Failed to destroy codec");
-
- /* Try to rewrite the file header with the actual frame count */
- if(!fseek(outfile, 0, SEEK_SET))
- write_ivf_file_header(outfile, &cfg, frame_cnt-1);
- fclose(outfile);
- return EXIT_SUCCESS;
-}
// ---------------------------------
// Encoders have the notion of "usage profiles." For example, an encoder
// may want to publish default configurations for both a video
-// conferencing appliction and a best quality offline encoder. These
+// conferencing application and a best quality offline encoder. These
// obviously have very different default settings. Consult the
// documentation for your codec to see if it provides any default
// configurations. All codecs provide a default configuration, number 0,
// an error, a descriptive message is printed and the program exits. With
// few exeptions, vpx_codec functions return an enumerated error status,
// with the value `0` indicating success.
+//
+// Error Resiliency Features
+// -------------------------
+// Error resiliency is controlled by the g_error_resilient member of the
+// configuration structure. Use the `decode_with_drops` example to decode with
+// frames 5-10 dropped. Compare the output for a file encoded with this example
+// versus one encoded with the `simple_encoder` example.
#include <stdio.h>
#include <stdlib.h>
static const char *exec_name;
void usage_exit() {
- fprintf(stderr, "Usage: %s <codec> <width> <height> <infile> <outfile>\n",
+ fprintf(stderr,
+ "Usage: %s <codec> <width> <height> <infile> <outfile> "
+ "[<error-resilient>]\nSee comments in simple_encoder.c for more "
+ "information.\n",
exec_name);
exit(EXIT_FAILURE);
}
const VpxInterface *encoder = NULL;
const int fps = 30; // TODO(dkovalev) add command line argument
const int bitrate = 200; // kbit/s TODO(dkovalev) add command line argument
- const char *const codec_arg = argv[1];
- const char *const width_arg = argv[2];
- const char *const height_arg = argv[3];
- const char *const infile_arg = argv[4];
- const char *const outfile_arg = argv[5];
+ const char *codec_arg = NULL;
+ const char *width_arg = NULL;
+ const char *height_arg = NULL;
+ const char *infile_arg = NULL;
+ const char *outfile_arg = NULL;
exec_name = argv[0];
- if (argc != 6)
+ if (argc < 6)
die("Invalid number of arguments");
+ codec_arg = argv[1];
+ width_arg = argv[2];
+ height_arg = argv[3];
+ infile_arg = argv[4];
+ outfile_arg = argv[5];
+
encoder = get_vpx_encoder_by_name(codec_arg);
if (!encoder)
die("Unsupported codec.");
cfg.g_timebase.num = info.time_base.numerator;
cfg.g_timebase.den = info.time_base.denominator;
cfg.rc_target_bitrate = bitrate;
+ cfg.g_error_resilient = argc > 6 ? strtol(argv[6], NULL, 0) : 0;
writer = vpx_video_writer_open(outfile_arg, kContainerIVF, &info);
if (!writer)
projects / libvpx / commitdiff