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authordscho <dscho>2004-06-07 17:47:54 +0000
committerdscho <dscho>2004-06-07 17:47:54 +0000
commit00901a2eb9ec569157fad8a531a1de037ac0e2de (patch)
tree9588d5402031524e297ebcded797fae13c23f966 /client_examples
parentc7730d9bad3add8dc02fb1ebbc9c65a35415d43b (diff)
downloadlibtdevnc-00901a2eb9ec569157fad8a531a1de037ac0e2de.tar.gz
libtdevnc-00901a2eb9ec569157fad8a531a1de037ac0e2de.zip
add vnc2mpg, a program which makes a movie from a VNC desktop using FFMPEG
Diffstat (limited to 'client_examples')
-rw-r--r--client_examples/Makefile.am13
-rw-r--r--client_examples/vnc2mpg.c426
2 files changed, 438 insertions, 1 deletions
diff --git a/client_examples/Makefile.am b/client_examples/Makefile.am
index d2a3e29..83750ab 100644
--- a/client_examples/Makefile.am
+++ b/client_examples/Makefile.am
@@ -1,6 +1,15 @@
DEFINES=-I.. -g -Wall
LDADD = ../libvncclient/libvncclient.a
+if WITH_FFMPEG
+FFMPEG_HOME=@with_ffmpeg@
+
+vnc2mpg_CFLAGS=-I$(FFMPEG_HOME)/libavformat -I$(FFMPEG_HOME)/libavcodec
+vnc2mpg_LDADD=$(LDADD) $(FFMPEG_HOME)/libavformat/libavformat.a $(FFMPEG_HOME)/libavcodec/libavcodec.a -lm
+
+FFMPEG_CLIENT=vnc2mpg
+endif
+
if HAVE_LIBSDL
SDLVIEWER=SDLvncviewer
@@ -9,5 +18,7 @@ SDLvncviewer_CFLAGS=`sdl-config --cflags`
SDLvncviewer_LDFLAGS=`sdl-config --libs`
endif
-noinst_PROGRAMS=ppmtest $(SDLVIEWER)
+noinst_PROGRAMS=ppmtest $(SDLVIEWER) $(FFMPEG_CLIENT)
+
+
diff --git a/client_examples/vnc2mpg.c b/client_examples/vnc2mpg.c
new file mode 100644
index 0000000..d1deb9b
--- /dev/null
+++ b/client_examples/vnc2mpg.c
@@ -0,0 +1,426 @@
+/*
+ * Simple movie writer for vnc; based on Libavformat API example from FFMPEG
+ *
+ * Copyright (c) 2003 Fabrice Bellard, 2004 Johannes E. Schindelin
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+#include <math.h>
+
+#ifndef M_PI
+#define M_PI 3.1415926535897931
+#endif
+
+#include "avformat.h"
+#include <rfb/rfbclient.h>
+
+/* 5 seconds stream duration */
+//#define STREAM_DURATION 5.0
+#define STREAM_FRAME_RATE 25 /* 25 images/s */
+//#define STREAM_NB_FRAMES ((int)(STREAM_DURATION * STREAM_FRAME_RATE))
+
+/**************************************************************/
+/* video output */
+
+AVFrame *picture, *tmp_picture;
+uint8_t *video_outbuf;
+int frame_count, video_outbuf_size;
+
+/* add a video output stream */
+AVStream *add_video_stream(AVFormatContext *oc, int codec_id, int w, int h)
+{
+ AVCodecContext *c;
+ AVStream *st;
+
+ st = av_new_stream(oc, 0);
+ if (!st) {
+ fprintf(stderr, "Could not alloc stream\n");
+ exit(1);
+ }
+
+ c = &st->codec;
+ c->codec_id = codec_id;
+ c->codec_type = CODEC_TYPE_VIDEO;
+
+ /* put sample parameters */
+ c->bit_rate = 400000;
+ /* resolution must be a multiple of two */
+ c->width = w;
+ c->height = h;
+ /* frames per second */
+ c->frame_rate = STREAM_FRAME_RATE;
+ c->frame_rate_base = 1;
+ c->gop_size = 12; /* emit one intra frame every twelve frames at most */
+ if (c->codec_id == CODEC_ID_MPEG2VIDEO) {
+ /* just for testing, we also add B frames */
+ c->max_b_frames = 2;
+ }
+ if (c->codec_id == CODEC_ID_MPEG1VIDEO){
+ /* needed to avoid using macroblocks in which some coeffs overflow
+ this doesnt happen with normal video, it just happens here as the
+ motion of the chroma plane doesnt match the luma plane */
+ c->mb_decision=2;
+ }
+ // some formats want stream headers to be seperate
+ if(!strcmp(oc->oformat->name, "mp4") || !strcmp(oc->oformat->name, "mov") || !strcmp(oc->oformat->name, "3gp"))
+ c->flags |= CODEC_FLAG_GLOBAL_HEADER;
+
+ return st;
+}
+
+AVFrame *alloc_picture(int pix_fmt, int width, int height)
+{
+ AVFrame *picture;
+ uint8_t *picture_buf;
+ int size;
+
+ picture = avcodec_alloc_frame();
+ if (!picture)
+ return NULL;
+ size = avpicture_get_size(pix_fmt, width, height);
+ picture_buf = malloc(size);
+ if (!picture_buf) {
+ av_free(picture);
+ return NULL;
+ }
+ avpicture_fill((AVPicture *)picture, picture_buf,
+ pix_fmt, width, height);
+ return picture;
+}
+
+void open_video(AVFormatContext *oc, AVStream *st)
+{
+ AVCodec *codec;
+ AVCodecContext *c;
+
+ c = &st->codec;
+
+ /* find the video encoder */
+ codec = avcodec_find_encoder(c->codec_id);
+ if (!codec) {
+ fprintf(stderr, "codec not found\n");
+ exit(1);
+ }
+
+ /* open the codec */
+ if (avcodec_open(c, codec) < 0) {
+ fprintf(stderr, "could not open codec\n");
+ exit(1);
+ }
+
+ video_outbuf = NULL;
+ if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) {
+ /* allocate output buffer */
+ /* XXX: API change will be done */
+ video_outbuf_size = 200000;
+ video_outbuf = malloc(video_outbuf_size);
+ }
+
+ /* allocate the encoded raw picture */
+ picture = alloc_picture(c->pix_fmt, c->width, c->height);
+ if (!picture) {
+ fprintf(stderr, "Could not allocate picture\n");
+ exit(1);
+ }
+
+ /* if the output format is not RGB565, then a temporary RGB565
+ picture is needed too. It is then converted to the required
+ output format */
+ tmp_picture = NULL;
+ if (c->pix_fmt != PIX_FMT_RGB565) {
+ tmp_picture = alloc_picture(PIX_FMT_RGB565, c->width, c->height);
+ if (!tmp_picture) {
+ fprintf(stderr, "Could not allocate temporary picture\n");
+ exit(1);
+ }
+ }
+}
+
+void write_video_frame(AVFormatContext *oc, AVStream *st)
+{
+ int out_size, ret;
+ AVCodecContext *c;
+ AVFrame *picture_ptr;
+
+ c = &st->codec;
+
+ if (c->pix_fmt != PIX_FMT_RGB565) {
+ /* as we only generate a RGB565 picture, we must convert it
+ to the codec pixel format if needed */
+ // TODO
+ //fill_yuv_image(tmp_picture, frame_count, c->width, c->height);
+ img_convert((AVPicture *)picture, c->pix_fmt,
+ (AVPicture *)tmp_picture, PIX_FMT_RGB565,
+ c->width, c->height);
+ } else {
+ // TODO: fill_yuv_image(picture, frame_count, c->width, c->height);
+ }
+ picture_ptr = picture;
+
+
+ if (oc->oformat->flags & AVFMT_RAWPICTURE) {
+ /* raw video case. The API will change slightly in the near
+ futur for that */
+ AVPacket pkt;
+ av_init_packet(&pkt);
+
+ pkt.flags |= PKT_FLAG_KEY;
+ pkt.stream_index= st->index;
+ pkt.data= (uint8_t *)picture_ptr;
+ pkt.size= sizeof(AVPicture);
+
+ ret = av_write_frame(oc, &pkt);
+ } else {
+ /* encode the image */
+ out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, picture_ptr);
+ /* if zero size, it means the image was buffered */
+ if (out_size != 0) {
+ AVPacket pkt;
+ av_init_packet(&pkt);
+
+ pkt.pts= c->coded_frame->pts;
+ if(c->coded_frame->key_frame)
+ pkt.flags |= PKT_FLAG_KEY;
+ pkt.stream_index= st->index;
+ pkt.data= video_outbuf;
+ pkt.size= out_size;
+
+ /* write the compressed frame in the media file */
+ ret = av_write_frame(oc, &pkt);
+ } else {
+ ret = 0;
+ }
+ }
+ if (ret != 0) {
+ fprintf(stderr, "Error while writing video frame\n");
+ exit(1);
+ }
+ frame_count++;
+}
+
+void close_video(AVFormatContext *oc, AVStream *st)
+{
+ avcodec_close(&st->codec);
+ av_free(picture->data[0]);
+ av_free(picture);
+ if (tmp_picture) {
+ av_free(tmp_picture->data[0]);
+ av_free(tmp_picture);
+ }
+ av_free(video_outbuf);
+}
+
+static const char *filename;
+static AVOutputFormat *fmt;
+static AVFormatContext *oc;
+static AVStream *video_st;
+static double video_pts;
+
+static int movie_open(int w, int h) {
+ if (fmt->video_codec != CODEC_ID_NONE) {
+ video_st = add_video_stream(oc, fmt->video_codec, w, h);
+ } else
+ return 1;
+
+ /* set the output parameters (must be done even if no
+ parameters). */
+ if (av_set_parameters(oc, NULL) < 0) {
+ fprintf(stderr, "Invalid output format parameters\n");
+ return 2;
+ }
+
+ dump_format(oc, 0, filename, 1);
+
+ /* now that all the parameters are set, we can open the audio and
+ video codecs and allocate the necessary encode buffers */
+ if (video_st)
+ open_video(oc, video_st);
+
+ /* open the output file, if needed */
+ if (!(fmt->flags & AVFMT_NOFILE)) {
+ if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) {
+ fprintf(stderr, "Could not open '%s'\n", filename);
+ return 3;
+ }
+ }
+
+ /* write the stream header, if any */
+ av_write_header(oc);
+
+ return 0;
+}
+
+static int movie_close() {
+ int i;
+
+ /* close each codec */
+ close_video(oc, video_st);
+
+ /* write the trailer, if any */
+ av_write_trailer(oc);
+
+ /* free the streams */
+ for(i = 0; i < oc->nb_streams; i++) {
+ av_freep(&oc->streams[i]);
+ }
+
+ if (!(fmt->flags & AVFMT_NOFILE)) {
+ /* close the output file */
+ url_fclose(&oc->pb);
+ }
+
+ /* free the stream */
+ av_free(oc);
+
+}
+
+static rfbBool quit=FALSE;
+static void signal_handler(int signal) {
+ fprintf(stderr,"Cleaning up.\n");
+ quit=TRUE;
+}
+
+/**************************************************************/
+/* VNC callback functions */
+static rfbBool resize(rfbClient* client) {
+ static rfbBool first=TRUE;
+ if(!first) {
+ movie_close();
+ perror("I don't know yet how to change resolutions!\n");
+ }
+ movie_open(client->width, client->height);
+ signal(SIGINT,signal_handler);
+ if(tmp_picture)
+ client->frameBuffer=tmp_picture->data[0];
+ else
+ client->frameBuffer=picture->data[0];
+ return TRUE;
+}
+
+static void update(rfbClient* client,int x,int y,int w,int h) {
+}
+
+/**************************************************************/
+/* media file output */
+
+int main(int argc, char **argv)
+{
+ time_t stop=0;
+ rfbClient* client;
+ int i;
+
+ /* get a vnc client structure (don't connect yet). */
+ client = rfbGetClient(5,3,2);
+ client->format.redShift=11; client->format.redMax=31;
+ client->format.greenShift=5; client->format.greenMax=63;
+ client->format.blueShift=0; client->format.blueMax=31;
+
+ /* initialize libavcodec, and register all codecs and formats */
+ av_register_all();
+
+ if(!strncmp(argv[argc-1],":",1) ||
+ !strncmp(argv[argc-1],"127.0.0.1",9) ||
+ !strncmp(argv[argc-1],"localhost",9))
+ client->appData.encodingsString="raw";
+
+ i=1;
+ filename=0;
+ while(i<argc) {
+ if(argc>i+1 && !strcmp("-o",argv[i])) {
+ filename=argv[2];
+ i+=2;
+ } else if(argc>i+1 && !strcmp("-t",argv[i])) {
+ stop=time(0)+atoi(argv[i+1]);
+ i+=2;
+ } else if(argc>i+1 && !strcmp("-encodings",argv[i])) {
+ client->appData.encodingsString=argv[i+1];
+ i+=2;
+ } else
+ break;
+ }
+
+ if (argc != i+1) {
+ printf("usage: %s [-o output_file] [-t seconds] server:port\n"
+ "Shoot a movie from a VNC server.\n", argv[0]);
+ exit(1);
+ }
+
+ /* auto detect the output format from the name. default is
+ mpeg. */
+ fmt = filename?guess_format(NULL, filename, NULL):0;
+ if (!fmt) {
+ printf("Could not deduce output format from file extension: using MPEG.\n");
+ fmt = guess_format("mpeg", NULL, NULL);
+ }
+ if (!fmt) {
+ fprintf(stderr, "Could not find suitable output format\n");
+ exit(1);
+ }
+
+ /* allocate the output media context */
+ oc = av_alloc_format_context();
+ if (!oc) {
+ fprintf(stderr, "Memory error\n");
+ exit(1);
+ }
+ oc->oformat = fmt;
+ snprintf(oc->filename, sizeof(oc->filename), "%s", filename);
+
+ /* add the audio and video streams using the default format codecs
+ and initialize the codecs */
+ video_st = NULL;
+
+ /* purge the arguments not concerning VNC */
+ argv[1]=argv[i];
+ argc=2;
+ client->MallocFrameBuffer=resize;
+ client->GotFrameBufferUpdate=update;
+ if(!rfbInitClient(client,&argc,argv)) {
+ fprintf(stderr,"Could not connect to server!\n");
+ return 1;
+ }
+
+ /* main loop */
+
+ while(!quit) {
+ int i=WaitForMessage(client,2000);
+ if(i<0) {
+ movie_close();
+ return 0;
+ }
+ if(i)
+ HandleRFBServerMessage(client);
+ else {
+ /* compute current audio and video time */
+ video_pts = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den;
+
+ /* write interleaved audio and video frames */
+ write_video_frame(oc, video_st);
+ }
+ if(stop!=0 && stop<time(0))
+ break;
+ }
+
+ movie_close();
+ return 0;
+}