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/*
mediastreamer2 library - modular sound and video processing and streaming
Copyright (C) 2010 Belledonne Communications SARL <simon.morlat@linphone.org>
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.
*/
#ifdef HAVE_CONFIG_H
#include "mediastreamer-config.h"
#endif
#include "mediastreamer2/msjpegwriter.h"
#include "mediastreamer2/msvideo.h"
#include "ffmpeg-priv.h"
#ifdef WIN32
#include <malloc.h>
#endif
typedef struct {
FILE *file;
AVCodec *codec;
}JpegWriter;
static void jpg_init(MSFilter *f){
JpegWriter *s=ms_new0(JpegWriter,1);
s->codec=avcodec_find_encoder(AV_CODEC_ID_MJPEG);
if (s->codec==NULL){
ms_error("Could not find AV_CODEC_ID_MJPEG !");
}
f->data=s;
}
static void jpg_uninit(MSFilter *f){
JpegWriter *s=(JpegWriter*)f->data;
if (s->file!=NULL){
fclose(s->file);
}
ms_free(s);
}
static int take_snapshot(MSFilter *f, void *arg){
JpegWriter *s=(JpegWriter*)f->data;
const char *filename=(const char*)arg;
if (s->file!=NULL){
fclose(s->file);
s->file=NULL;
}
s->file=fopen(filename,"w");
if (s->file==NULL){
ms_error("Could not open %s",filename);
return -1;
}
return 0;
}
static void cleanup(JpegWriter *s, AVCodecContext *avctx){
if (s->file){
fclose(s->file);
s->file=NULL;
}
if (avctx){
avcodec_close(avctx);
av_free(avctx);
}
}
static void jpg_process(MSFilter *f){
JpegWriter *s=(JpegWriter*)f->data;
if (s->file!=NULL && s->codec!=NULL){
MSPicture yuvbuf, yuvjpeg;
mblk_t *m=ms_queue_peek_last(f->inputs[0]);
if (ms_yuv_buf_init_from_mblk(&yuvbuf,m)==0){
int error, got_output;
AVFrame pict;
AVPacket pkt = { 0 };
mblk_t *jpegm;
struct SwsContext *sws_ctx;
AVCodecContext *avctx=avcodec_alloc_context();
avctx->width=yuvbuf.w;
avctx->height=yuvbuf.h;
avctx->time_base.num = 1;
avctx->time_base.den =1;
avctx->pix_fmt=PIX_FMT_YUVJ420P;
error=avcodec_open(avctx,s->codec);
if (error!=0) {
ms_error("avcodec_open() failed: %i",error);
cleanup(s,NULL);
av_free(avctx);
return;
}
sws_ctx=sws_getContext(avctx->width,avctx->height,PIX_FMT_YUV420P,
avctx->width,avctx->height,avctx->pix_fmt,SWS_FAST_BILINEAR,NULL, NULL, NULL);
if (sws_ctx==NULL) {
ms_error(" sws_getContext() failed.");
cleanup(s,avctx);
goto end;
}
jpegm=ms_yuv_buf_alloc (&yuvjpeg,avctx->width, avctx->height);
#if LIBSWSCALE_VERSION_INT >= AV_VERSION_INT(0,9,0)
if (sws_scale(sws_ctx,(const uint8_t *const*)yuvbuf.planes,yuvbuf.strides,0,avctx->height,yuvjpeg.planes,yuvjpeg.strides)<0){
#else
if (sws_scale(sws_ctx,(uint8_t **)yuvbuf.planes,yuvbuf.strides,0,avctx->height,yuvjpeg.planes,yuvjpeg.strides)<0){
#endif
ms_error("sws_scale() failed.");
sws_freeContext(sws_ctx);
cleanup(s,avctx);
freemsg(jpegm);
goto end;
}
sws_freeContext(sws_ctx);
avcodec_get_frame_defaults(&pict);
avpicture_fill((AVPicture*)&pict,(uint8_t*)jpegm->b_rptr,avctx->pix_fmt,avctx->width,avctx->height);
error=avcodec_encode_video2(avctx, &pkt, &pict, &got_output);
if (error<0){
ms_error("Could not encode jpeg picture.");
}else if (got_output) {
if (fwrite(pkt.data,pkt.size,1,s->file)>0){
ms_message("Snapshot done");
}else{
ms_error("Error writing snapshot.");
}
}
av_packet_unref(&pkt);
cleanup(s,avctx);
freemsg(jpegm);
}
goto end;
}
end:
ms_queue_flush(f->inputs[0]);
}
static MSFilterMethod jpg_methods[]={
{ MS_JPEG_WRITER_TAKE_SNAPSHOT, take_snapshot },
{ 0,NULL}
};
#ifndef _MSC_VER
MSFilterDesc ms_jpeg_writer_desc={
.id=MS_JPEG_WRITER_ID,
.name="MSJpegWriter",
.text="Take a video snapshot as jpg file",
.category=MS_FILTER_OTHER,
.ninputs=1,
.noutputs=0,
.init=jpg_init,
.process=jpg_process,
.uninit=jpg_uninit,
.methods=jpg_methods
};
#else
MSFilterDesc ms_jpeg_writer_desc={
MS_JPEG_WRITER_ID,
"MSJpegWriter",
"Take a video snapshot as jpg file",
MS_FILTER_OTHER,
NULL,
1,
0,
jpg_init,
NULL,
jpg_process,
NULL,
jpg_uninit,
jpg_methods
};
#endif
MS_FILTER_DESC_EXPORT(ms_jpeg_writer_desc)
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