718 lines
20 KiB
C
718 lines
20 KiB
C
/*
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* Basic user interface for ffmpeg system
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* Copyright (c) 2000 Gerard Lantau
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <netinet/in.h>
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#include <linux/videodev.h>
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#include <linux/soundcard.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <errno.h>
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#include <sys/time.h>
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#include <getopt.h>
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#include "mpegenc.h"
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#include "mpegvideo.h"
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static AVFormat *file_format;
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static int frame_width = 160;
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static int frame_height = 128;
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static int frame_rate = 25;
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static int bit_rate = 200000;
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static int video_disable = 0;
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static const char *video_filename, *audio_filename;
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static float recording_time = 10.0;
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static int nb_frames;
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static int gop_size = 12;
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static int intra_only = 0;
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static int audio_freq = 44100;
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static int audio_bit_rate = 64000;
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static int audio_disable = 0;
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static int audio_channels = 1;
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static long long time_start;
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static int file_read_picture(AVEncodeContext *s,
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UINT8 *picture[3],
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int width, int height,
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int picture_number)
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{
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FILE *f;
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char buf[1024];
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static int init = 0;
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static UINT8 *pict[3];
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if (!init) {
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pict[0] = malloc(width * height);
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pict[1] = malloc(width * height / 4);
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pict[2] = malloc(width * height / 4);
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init = 1;
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}
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picture[0] = pict[0];
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picture[1] = pict[1];
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picture[2] = pict[2];
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sprintf(buf, "%s%d.Y", video_filename, picture_number);
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f=fopen(buf, "r");
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if (!f) {
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return -1;
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}
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fread(picture[0], 1, width * height, f);
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fclose(f);
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sprintf(buf, "%s%d.U", video_filename, picture_number);
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f=fopen(buf, "r");
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if (!f) {
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perror(buf);
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exit(1);
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}
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fread(picture[1], 1, width * height / 4, f);
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fclose(f);
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sprintf(buf, "%s%d.V", video_filename, picture_number);
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f=fopen(buf, "r");
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if (!f) {
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perror(buf);
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exit(1);
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}
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fread(picture[2], 1, width * height / 4, f);
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fclose(f);
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return 0;
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}
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static void display_stats(AVEncodeContext *video_ctx,
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AVEncodeContext *audio_ctx,
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int batch_mode, int the_end)
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{
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if (video_ctx &&
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((video_ctx->frame_number % video_ctx->rate) == 0 ||
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the_end)) {
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float ti;
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if (batch_mode) {
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ti = (float)video_ctx->frame_number / video_ctx->rate;
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} else {
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ti = (gettime() - time_start) / 1000000.0;
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if (ti < 0.1)
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ti = 0.1;
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}
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fprintf(stderr,
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"frame=%5d size=%8dkB time=%0.1f fps=%4.1f bitrate=%6.1fkbits/s q=%2d\r",
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video_ctx->frame_number,
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data_out_size / 1024,
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ti,
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video_ctx->frame_number / ti,
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(data_out_size * 8 / ti / 1000),
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((MpegEncContext *)video_ctx->priv_data)->qscale);
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if (the_end) {
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fprintf(stderr,"\n");
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}
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fflush(stderr);
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}
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#if 0
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if (the_end && batch_mode && audio_ctx) {
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duration = (gettime() - ti) / 1000000.0;
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factor = 0;
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if (ti > 0) {
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factor = (float)nb_samples / s->sample_rate / duration;
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}
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fprintf(stderr, "%0.1f seconds compressed in %0.1f seconds (speed factor: %0.1f)\n",
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(float)nb_samples / s->sample_rate,
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duration,
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factor);
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}
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#endif
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}
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void raw_write_data(void *opaque,
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unsigned char *buf, int size)
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{
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FILE *outfile = opaque;
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fwrite(buf, 1, size, outfile);
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data_out_size += size;
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}
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int raw_seek(void *opaque, long long offset, int whence)
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{
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FILE *outfile = opaque;
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fseek(outfile, offset, whence);
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return 0;
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}
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static void av_encode(AVFormatContext *ctx,
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const char *video_filename,
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const char *audio_filename)
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{
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UINT8 audio_buffer[4096];
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UINT8 video_buffer[128*1024];
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char buf[256];
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short *samples;
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int ret;
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int audio_fd;
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FILE *infile;
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int sample_count;
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int batch_mode;
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AVEncodeContext *audio_enc, *video_enc;
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int frame_size, frame_bytes;
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AVEncoder *audio_encoder, *video_encoder;
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UINT8 *picture[3];
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/* audio */
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audio_enc = ctx->audio_enc;
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sample_count = 0;
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infile = NULL;
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frame_size = 0;
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samples = NULL;
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audio_fd = -1;
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frame_bytes = 0;
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batch_mode = 0;
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if (audio_filename ||
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video_filename)
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batch_mode = 1;
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if (audio_enc) {
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if (batch_mode) {
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if (!audio_filename) {
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fprintf(stderr, "Must give audio input file\n");
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exit(1);
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}
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infile = fopen(audio_filename, "r");
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if (!infile) {
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fprintf(stderr, "Could not open '%s'\n", audio_filename);
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exit(1);
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}
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audio_fd = -1;
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} else {
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audio_fd = audio_open(audio_enc->rate, audio_enc->channels);
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if (audio_fd < 0) {
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fprintf(stderr, "Could not open audio device\n");
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exit(1);
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}
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}
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audio_encoder = avencoder_find(ctx->format->audio_codec);
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if (avencoder_open(audio_enc, audio_encoder) < 0) {
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fprintf(stderr, "Audio encoder: incorrect audio frequency or bitrate\n");
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exit(1);
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}
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avencoder_string(buf, sizeof(buf), audio_enc);
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fprintf(stderr, " %s\n", buf);
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frame_size = audio_enc->frame_size;
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frame_bytes = frame_size * 2 * audio_enc->channels;
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samples = malloc(frame_bytes);
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}
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/* video */
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video_enc = ctx->video_enc;
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if (video_enc) {
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if (batch_mode) {
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if (!video_filename) {
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fprintf(stderr, "Must give video input file\n");
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exit(1);
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}
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} else {
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ret = v4l_init(video_enc->rate, video_enc->width, video_enc->height);
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if (ret < 0) {
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fprintf(stderr,"Could not init video 4 linux capture\n");
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exit(1);
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}
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}
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video_encoder = avencoder_find(ctx->format->video_codec);
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if (avencoder_open(video_enc, video_encoder) < 0) {
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fprintf(stderr, "Error while initializing video codec\n");
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exit(1);
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}
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avencoder_string(buf, sizeof(buf), video_enc);
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fprintf(stderr, " %s\n", buf);
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}
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ctx->format->write_header(ctx);
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time_start = gettime();
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for(;;) {
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/* read & compression audio frames */
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if (audio_enc) {
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if (!batch_mode) {
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for(;;) {
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ret = read(audio_fd, samples, frame_bytes);
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if (ret != frame_bytes)
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break;
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ret = avencoder_encode(audio_enc,
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audio_buffer, sizeof(audio_buffer), samples);
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ctx->format->write_audio_frame(ctx, audio_buffer, ret);
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}
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} else {
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if (video_enc)
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sample_count += audio_enc->rate / video_enc->rate;
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else
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sample_count += frame_size;
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while (sample_count > frame_size) {
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if (fread(samples, 1, frame_bytes, infile) == 0)
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goto the_end;
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ret = avencoder_encode(audio_enc,
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audio_buffer, sizeof(audio_buffer), samples);
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ctx->format->write_audio_frame(ctx, audio_buffer, ret);
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sample_count -= frame_size;
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}
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}
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}
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if (video_enc) {
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/* read video image */
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if (batch_mode) {
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ret = file_read_picture (video_enc, picture,
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video_enc->width, video_enc->height,
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video_enc->frame_number);
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} else {
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ret = v4l_read_picture (picture,
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video_enc->width, video_enc->height,
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video_enc->frame_number);
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}
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if (ret < 0)
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break;
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ret = avencoder_encode(video_enc, video_buffer, sizeof(video_buffer), picture);
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ctx->format->write_video_picture(ctx, video_buffer, ret);
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}
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display_stats(video_enc, NULL, batch_mode, 0);
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if (video_enc && video_enc->frame_number >= nb_frames)
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break;
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}
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the_end:
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display_stats(video_enc, NULL, batch_mode, 1);
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if (video_enc)
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avencoder_close(video_enc);
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if (audio_enc)
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avencoder_close(audio_enc);
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ctx->format->write_trailer(ctx);
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if (!infile) {
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close(audio_fd);
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} else {
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fclose(infile);
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}
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}
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typedef struct {
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const char *str;
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int width, height;
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} SizeEntry;
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SizeEntry sizes[] = {
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{ "sqcif", 128, 96 },
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{ "qcif", 176, 144 },
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{ "cif", 352, 288 },
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{ "4cif", 704, 576 },
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};
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enum {
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OPT_AR=256,
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OPT_AB,
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OPT_AN,
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OPT_AC,
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OPT_VN,
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};
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struct option long_options[] =
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{
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{ "ar", required_argument, NULL, OPT_AR },
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{ "ab", required_argument, NULL, OPT_AB },
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{ "an", no_argument, NULL, OPT_AN },
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{ "ac", required_argument, NULL, OPT_AC },
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{ "vn", no_argument, NULL, OPT_VN },
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};
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enum {
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OUT_FILE,
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OUT_PIPE,
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OUT_UDP,
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};
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void help(void)
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{
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AVFormat *f;
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printf("ffmpeg version 1.0, Copyright (c) 2000 Gerard Lantau\n"
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"usage: ffmpeg [options] outfile [video_infile] [audio_infile]\n"
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"Hyper fast MPEG1 video/H263/RV and AC3/MPEG audio layer 2 encoder\n"
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"\n"
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"Main options are:\n"
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"\n"
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"-L print the LICENSE\n"
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"-s size set frame size [%dx%d]\n"
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"-f format set encoding format [%s]\n"
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"-r fps set frame rate [%d]\n"
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"-b bitrate set the total bitrate in kbit/s [%d]\n"
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"-t time set recording time in seconds [%0.1f]\n"
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"-ar freq set the audio sampling freq [%d]\n"
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"-ab bitrate set the audio bitrate in kbit/s [%d]\n"
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"-ac channels set the number of audio channels [%d]\n"
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"-an disable audio recording [%s]\n"
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"-vn disable video recording [%s]\n"
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"\n"
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"Frame sizes abbreviations: sqcif qcif cif 4cif\n",
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frame_width, frame_height,
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file_format->name,
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frame_rate,
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bit_rate / 1000,
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recording_time,
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audio_freq,
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audio_bit_rate / 1000,
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audio_channels,
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audio_disable ? "yes" : "no",
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video_disable ? "yes" : "no");
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printf("Encoding video formats:");
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for(f = first_format; f != NULL; f = f->next)
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printf(" %s", f->name);
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printf("\n");
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printf("outfile can be a file name, - (pipe) or 'udp:host:port'\n"
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"\n"
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"Advanced options are:\n"
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"-d device set video4linux device name\n"
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"-g gop_size set the group of picture size [%d]\n"
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"-i use only intra frames [%s]\n"
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"-c comment set the comment string\n"
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"\n",
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gop_size,
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intra_only ? "yes" : "no");
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}
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void licence(void)
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{
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printf(
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"ffmpeg version 1.0\n"
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"Copyright (c) 2000 Gerard Lantau\n"
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"This program is free software; you can redistribute it and/or modify\n"
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"it under the terms of the GNU General Public License as published by\n"
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"the Free Software Foundation; either version 2 of the License, or\n"
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"(at your option) any later version.\n"
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"\n"
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"This program is distributed in the hope that it will be useful,\n"
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"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
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"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
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"GNU General Public License for more details.\n"
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"\n"
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"You should have received a copy of the GNU General Public License\n"
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"along with this program; if not, write to the Free Software\n"
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"Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.\n"
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);
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}
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static unsigned char output_buffer[32768];
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int main(int argc, char **argv)
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{
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AVEncodeContext video_enc1, *video_enc = &video_enc1;
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AVEncodeContext audio_enc1, *audio_enc = &audio_enc1;
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UDPContext udp_ctx1, *udp_ctx = &udp_ctx1;
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AVFormatContext av_ctx1, *av_ctx = &av_ctx1;
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FILE *outfile;
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int i, c;
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char *filename;
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int output_type;
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int use_video, use_audio;
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register_avencoder(&ac3_encoder);
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register_avencoder(&mp2_encoder);
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register_avencoder(&mpeg1video_encoder);
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register_avencoder(&h263_encoder);
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register_avencoder(&rv10_encoder);
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register_avencoder(&mjpeg_encoder);
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register_avformat(&mp2_format);
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register_avformat(&ac3_format);
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register_avformat(&mpeg1video_format);
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register_avformat(&h263_format);
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register_avformat(&mpeg_mux_format);
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register_avformat(&ra_format);
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register_avformat(&rm_format);
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register_avformat(&asf_format);
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register_avformat(&mpjpeg_format);
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register_avformat(&swf_format);
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file_format = NULL;
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for(;;) {
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c = getopt_long_only(argc, argv, "s:f:r:b:t:hd:g:ic:L",
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long_options, NULL);
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if (c == -1)
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break;
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switch(c) {
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case 'L':
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licence();
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exit(1);
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case 'h':
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help();
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exit(1);
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case 's':
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{
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int n = sizeof(sizes) / sizeof(SizeEntry);
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const char *p;
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for(i=0;i<n;i++) {
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if (!strcmp(sizes[i].str, optarg)) {
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frame_width = sizes[i].width;
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frame_height = sizes[i].height;
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break;
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}
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}
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if (i == n) {
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p = optarg;
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frame_width = strtol(p, (char **)&p, 10);
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if (*p)
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p++;
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frame_height = strtol(p, (char **)&p, 10);
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}
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}
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break;
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case 'f':
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{
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AVFormat *f;
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f = first_format;
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while (f != NULL && strcmp(f->name, optarg) != 0) f = f->next;
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if (f == NULL) {
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fprintf(stderr, "Invalid format: %s\n", optarg);
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exit(1);
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}
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file_format = f;
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}
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break;
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case 'r':
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{
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frame_rate = atoi(optarg);
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}
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break;
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case 'b':
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{
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bit_rate = atoi(optarg) * 1000;
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}
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break;
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case 't':
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{
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recording_time = atof(optarg);
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break;
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}
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/* audio specific */
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case OPT_AR:
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{
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audio_freq = atoi(optarg);
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break;
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}
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case OPT_AB:
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{
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audio_bit_rate = atoi(optarg) * 1000;
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break;
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}
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case OPT_AN:
|
|
audio_disable = 1;
|
|
break;
|
|
case OPT_VN:
|
|
video_disable = 1;
|
|
break;
|
|
case OPT_AC:
|
|
{
|
|
audio_channels = atoi(optarg);
|
|
if (audio_channels != 1 &&
|
|
audio_channels != 2) {
|
|
fprintf(stderr, "Incorrect number of channels: %d\n", audio_channels);
|
|
exit(1);
|
|
}
|
|
}
|
|
break;
|
|
/* advanced options */
|
|
case 'd':
|
|
v4l_device = optarg;
|
|
break;
|
|
case 'g':
|
|
gop_size = atoi(optarg);
|
|
break;
|
|
case 'i':
|
|
intra_only = 1;
|
|
break;
|
|
case 'c':
|
|
comment_string = optarg;
|
|
break;
|
|
default:
|
|
exit(2);
|
|
}
|
|
}
|
|
|
|
if (optind >= argc) {
|
|
help();
|
|
exit(1);
|
|
}
|
|
|
|
filename = argv[optind++];
|
|
video_filename = NULL;
|
|
audio_filename = NULL;
|
|
|
|
/* auto detect format */
|
|
if (file_format == NULL)
|
|
file_format = guess_format(NULL, filename, NULL);
|
|
|
|
if (file_format == NULL)
|
|
file_format = &mpeg_mux_format;
|
|
|
|
/* check parameters */
|
|
if (frame_width <= 0 || frame_height <= 0) {
|
|
fprintf(stderr, "Incorrect frame size\n");
|
|
exit(1);
|
|
}
|
|
if ((frame_width % 16) != 0 || (frame_height % 16) != 0) {
|
|
fprintf(stderr, "Frame size must be a multiple of 16\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (bit_rate < 5000 || bit_rate >= 10000000) {
|
|
fprintf(stderr, "Invalid bit rate\n");
|
|
exit(1);
|
|
}
|
|
|
|
if (frame_rate < 1 || frame_rate >= 60) {
|
|
fprintf(stderr, "Invalid frame rate\n");
|
|
exit(1);
|
|
}
|
|
|
|
nb_frames = (int)(recording_time * frame_rate);
|
|
if (nb_frames < 1) {
|
|
fprintf(stderr, "Invalid recording time\n");
|
|
exit(1);
|
|
}
|
|
|
|
use_video = file_format->video_codec != CODEC_ID_NONE;
|
|
use_audio = file_format->audio_codec != CODEC_ID_NONE;
|
|
if (audio_disable) {
|
|
use_audio = 0;
|
|
}
|
|
if (video_disable) {
|
|
use_video = 0;
|
|
}
|
|
|
|
if (use_video == 0 && use_audio == 0) {
|
|
fprintf(stderr, "No audio or video selected\n");
|
|
exit(1);
|
|
}
|
|
|
|
fprintf(stderr, "Recording: %s, %0.1f seconds\n",
|
|
file_format->name,
|
|
recording_time);
|
|
|
|
/* open output media */
|
|
|
|
if (strstart(filename, "udp:", NULL)) {
|
|
output_type = OUT_UDP;
|
|
outfile = NULL;
|
|
memset(udp_ctx, 0, sizeof(*udp_ctx));
|
|
if (udp_tx_open(udp_ctx, filename, 0) < 0) {
|
|
fprintf(stderr, "Could not open UDP socket\n");
|
|
exit(1);
|
|
}
|
|
} else if (!strcmp(filename, "-")) {
|
|
output_type = OUT_PIPE;
|
|
outfile = stdout;
|
|
} else {
|
|
output_type = OUT_FILE;
|
|
outfile = fopen(filename, "w");
|
|
if (!outfile) {
|
|
perror(filename);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
av_ctx->video_enc = NULL;
|
|
av_ctx->audio_enc = NULL;
|
|
|
|
if (output_type == OUT_UDP) {
|
|
init_put_byte(&av_ctx->pb, output_buffer, sizeof(output_buffer),
|
|
udp_ctx, udp_write_data, NULL);
|
|
} else {
|
|
init_put_byte(&av_ctx->pb, output_buffer, sizeof(output_buffer),
|
|
outfile, raw_write_data, raw_seek);
|
|
}
|
|
|
|
if (use_video) {
|
|
if (optind < argc) {
|
|
video_filename = argv[optind++];
|
|
}
|
|
/* init mpeg video encoding context */
|
|
memset(video_enc, 0, sizeof(*video_enc));
|
|
video_enc->bit_rate = bit_rate;
|
|
video_enc->rate = frame_rate;
|
|
|
|
video_enc->width = frame_width;
|
|
video_enc->height = frame_height;
|
|
if (!intra_only)
|
|
video_enc->gop_size = gop_size;
|
|
else
|
|
video_enc->gop_size = 0;
|
|
|
|
av_ctx->video_enc = video_enc;
|
|
av_ctx->format = file_format;
|
|
}
|
|
|
|
if (use_audio) {
|
|
if (optind < argc) {
|
|
audio_filename = argv[optind++];
|
|
}
|
|
audio_enc->bit_rate = audio_bit_rate;
|
|
audio_enc->rate = audio_freq;
|
|
audio_enc->channels = audio_channels;
|
|
av_ctx->audio_enc = audio_enc;
|
|
}
|
|
av_ctx->format = file_format;
|
|
av_ctx->is_streamed = 0;
|
|
|
|
av_encode(av_ctx, video_filename, audio_filename);
|
|
|
|
/* close output media */
|
|
|
|
switch(output_type) {
|
|
case OUT_FILE:
|
|
fclose(outfile);
|
|
break;
|
|
case OUT_PIPE:
|
|
break;
|
|
case OUT_UDP:
|
|
udp_tx_close(udp_ctx);
|
|
break;
|
|
}
|
|
fprintf(stderr, "\n");
|
|
|
|
return 0;
|
|
}
|
|
|