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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* RTVideoRec Realtime video recoder and encoder for Linux
*
* Copyright (C) 2004 Bent Bisballe
* Copyright (C) 2004 B. Stultiens
* Copyright (C) 2004 Koen Otter and Glenn van der Meyden
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "mov_encoder.h"
#include "debug.h"
//av_alloc_format_context
//av_destruct_packet_nofree
MovEncoder::MovEncoder(const char *filename)
{
//////////////////// GLOBAL INIT
av_register_all();
//////////////////// ENCODE INIT
AVStream *st;
AVCodec *enc_codec;
if(!(efc = av_alloc_format_context())) {
fprintf(stderr, "Could not alloc output format context\n");
exit(1);
}
ALLOC(dcc, "mov_encoder, efc");
efc->oformat = guess_format("mpeg", NULL, NULL);
//efc->oformat = guess_format(NULL, filename, NULL);
if(!(st = av_new_stream(efc, 0))) {
fprintf(stderr, "Could not alloc stream\n");
switch((int)st) {
case AVERROR_UNKNOWN : printf("unknown error\n");
break;
case AVERROR_IO : printf("i/o error\n");
break;
case AVERROR_NUMEXPECTED : printf("number syntax expected in filename\n");
break;
case AVERROR_INVALIDDATA : printf("invalid data found\n");
break;
case AVERROR_NOMEM : printf("not enough memory\n");
break;
case AVERROR_NOFMT : printf("unknown format\n");
break;
case AVERROR_NOTSUPP : printf("operation not supported\n");
break;
}
exit(1);
}
enc_codec = avcodec_find_encoder(CODEC_ID_MPEG2VIDEO);
if(!enc_codec) {
printf("Unsupported codec for output stream\n");
exit(1);
}
avcodec_get_context_defaults(&st->codec);
ecc = &st->codec;
ecc->codec_id = CODEC_ID_MPEG2VIDEO;
ecc->bit_rate = 8192*1000;
ecc->bit_rate_tolerance = 8000*1000;
ecc->frame_rate = 25;
ecc->frame_rate_base = 1;
ecc->width = 720;
ecc->height = 576;
ecc->pix_fmt = PIX_FMT_YUV420P;
ecc->gop_size = 0;
ecc->mb_decision = FF_MB_DECISION_SIMPLE;
ecc->qmin = 2;
ecc->qmax = 31;
ecc->mb_qmin = 2;
ecc->mb_qmax = 31;
ecc->max_qdiff = 3;
ecc->qblur = 0.5;
ecc->qcompress = 0.5;
ecc->rc_eq = "tex^qComp";
ecc->debug= 0;
ecc->rc_override_count=0;
ecc->rc_max_rate = 0;
ecc->rc_min_rate = 0;
ecc->rc_buffer_size = 0;
ecc->rc_buffer_aggressivity = 1.0;
ecc->rc_initial_cplx= 0;
ecc->i_quant_factor = -0.8;
ecc->b_quant_factor = 1.25;
ecc->i_quant_offset = 0.8;
ecc->b_quant_offset = 1.25;
ecc->dct_algo = 0;
ecc->idct_algo = 0;
ecc->strict_std_compliance = 0;
ecc->me_method = ME_EPZS;
if(avcodec_open(&st->codec, enc_codec) < 0) {
printf("Error while opening codec for stream\n");
exit(1);
}
if(url_fopen(&efc->pb, filename, URL_RDWR) < 0) {
fprintf(stderr, "Could not open '%s'\n", filename);
exit(1);
}
if(av_set_parameters(efc, NULL) < 0) {
fprintf(stderr, "%s: Invalid encoding parameters\n", filename);
exit(1);
}
dump_format(efc, 0, filename, 1);
if(av_write_header(efc) < 0) {
fprintf(stderr, "Could not write header for output file \n");
exit(1);
}
video_buffer = (unsigned char *)av_malloc(VIDEO_BUFFER_SIZE); ALLOC(dcc, "mov_encoder, video_buffer");
av_init_packet(&epkt);
epkt.stream_index = efc->streams[0]->index;
// ecc = &efc->streams[0]->codec;
//////////////////// DECODE INIT
AVCodec *deccodec;
// AVCodecContext *dcc= NULL;
printf("Video decoding\n");
/* find the dvvideo decoder */
deccodec = avcodec_find_decoder(CODEC_ID_DVVIDEO);
if (!deccodec) {
fprintf(stderr, "codec not found\n");
exit(1);
}
dcc= avcodec_alloc_context(); ALLOC(dcc, "mov_encoder, dcc");
/* open it */
if (avcodec_open(dcc, deccodec) < 0) {
fprintf(stderr, "could not open codec\n");
exit(1);
}
}
MovEncoder::~MovEncoder()
{
av_free(video_buffer); FREE(video_buffer);
url_fclose(&efc->pb);
}
void MovEncoder::encode(DVFrame *dvframe)
{
int ret;
AVFrame *rawframe = avcodec_alloc_frame();ALLOC(dcc, "mov_encoder, rawframe");
///////////////////////// DECODE
uint8_t *ptr;
int got_picture = 1;
int len;
ptr = (uint8_t *)dvframe->frame;
len = sizeof(dvframe->frame);
ret = avcodec_decode_video(dcc,//&dfc->streams[0]->codec,
rawframe, &got_picture, ptr, len);
if(!ret) {
printf("Decoder fuckup!\n");
return;
}
///////////////////////// ENCODE
ret = avcodec_encode_video(ecc, video_buffer, VIDEO_BUFFER_SIZE, rawframe);
if(!ret) {
printf("MovEncoder fuckup!\n");
return;
}
epkt.data = video_buffer;
epkt.size = ret;
if(ecc->coded_frame) epkt.pts = ecc->coded_frame->pts;
if(ecc->coded_frame && ecc->coded_frame->key_frame) epkt.flags |= PKT_FLAG_KEY;
av_write_frame(efc, &epkt);
av_free(rawframe); FREE(rawframe);
}
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