From cc58300e30e7aea6acfecd72a04a3886b285cfd8 Mon Sep 17 00:00:00 2001 From: Ramiro Polla Date: Wed, 14 Feb 2007 17:01:32 +0000 Subject: implement new grabbing interface, as described here: ttp://thread.gmane.org/gmane.comp.video.ffmpeg.devel/42920 patch by Ramiro Polla % ramiro A lisha P ufsc P br % Original thread: Date: Jan 31, 2007 8:56 PM Subject: [Ffmpeg-devel] [PATCH] New grabbing interface Originally committed as revision 7983 to svn://svn.ffmpeg.org/ffmpeg/trunk --- ffmpeg.c | 148 ++------------------------------------------------------------- 1 file changed, 3 insertions(+), 145 deletions(-) (limited to 'ffmpeg.c') diff --git a/ffmpeg.c b/ffmpeg.c index 7eb7011e84..5f79d7f6d3 100644 --- a/ffmpeg.c +++ b/ffmpeg.c @@ -181,22 +181,9 @@ static int video_global_header = 0; static int rate_emu = 0; -#ifdef CONFIG_BKTR -static const char *video_grab_format = "bktr"; -#else -#ifdef CONFIG_VIDEO4LINUX2 -static const char *video_grab_format = "video4linux2"; -#else -static const char *video_grab_format = "video4linux"; -#endif -#endif -static char *video_device = NULL; -static char *grab_device = NULL; static int video_channel = 0; static char *video_standard = "ntsc"; -static const char *audio_grab_format = "audio_device"; -static char *audio_device = NULL; static int audio_volume = 256; static int using_stdin = 0; @@ -2357,16 +2344,6 @@ static void opt_audio_channels(const char *arg) audio_channels = atoi(arg); } -static void opt_video_device(const char *arg) -{ - video_device = av_strdup(arg); -} - -static void opt_grab_device(const char *arg) -{ - grab_device = av_strdup(arg); -} - static void opt_video_channel(const char *arg) { video_channel = strtol(arg, NULL, 0); @@ -2377,11 +2354,6 @@ static void opt_video_standard(const char *arg) video_standard = av_strdup(arg); } -static void opt_audio_device(const char *arg) -{ - audio_device = av_strdup(arg); -} - static void opt_codec(int *pstream_copy, int *pcodec_id, int codec_type, const char *arg) { @@ -2573,7 +2545,6 @@ static void opt_input_file(const char *filename) ap->width = frame_width + frame_padleft + frame_padright; ap->height = frame_height + frame_padtop + frame_padbottom; ap->pix_fmt = frame_pix_fmt; - ap->device = grab_device; ap->channel = video_channel; ap->standard = video_standard; ap->video_codec_id = video_codec_id; @@ -2699,18 +2670,11 @@ static void opt_input_file(const char *filename) file_iformat = NULL; file_oformat = NULL; - grab_device = NULL; video_channel = 0; rate_emu = 0; } -static void opt_grab(const char *arg) -{ - file_iformat = av_find_input_format(arg); - opt_input_file(""); -} - static void check_audio_video_inputs(int *has_video_ptr, int *has_audio_ptr) { int has_video, has_audio, i, j; @@ -3179,107 +3143,6 @@ static void opt_output_file(const char *filename) file_iformat = NULL; } -/* prepare dummy protocols for grab */ -static void prepare_grab(void) -{ - int has_video, has_audio, i, j; - AVFormatContext *oc; - AVFormatContext *ic; - AVFormatParameters vp1, *vp = &vp1; - AVFormatParameters ap1, *ap = &ap1; - - /* see if audio/video inputs are needed */ - has_video = 0; - has_audio = 0; - memset(ap, 0, sizeof(*ap)); - memset(vp, 0, sizeof(*vp)); - vp->time_base.num= 1; - for(j=0;jnb_streams;i++) { - AVCodecContext *enc = oc->streams[i]->codec; - switch(enc->codec_type) { - case CODEC_TYPE_AUDIO: - if (enc->sample_rate > ap->sample_rate) - ap->sample_rate = enc->sample_rate; - if (enc->channels > ap->channels) - ap->channels = enc->channels; - has_audio = 1; - break; - case CODEC_TYPE_VIDEO: - if (enc->width > vp->width) - vp->width = enc->width; - if (enc->height > vp->height) - vp->height = enc->height; - - if (vp->time_base.num*(int64_t)enc->time_base.den > enc->time_base.num*(int64_t)vp->time_base.den){ - vp->time_base = enc->time_base; - vp->width += frame_leftBand + frame_rightBand; - vp->width -= (frame_padleft + frame_padright); - vp->height += frame_topBand + frame_bottomBand; - vp->height -= (frame_padtop + frame_padbottom); - } - has_video = 1; - break; - default: - av_abort(); - } - } - } - - if (has_video == 0 && has_audio == 0) { - fprintf(stderr, "Output file must have at least one audio or video stream\n"); - exit(1); - } - - if (has_video) { - AVInputFormat *fmt1; -#warning FIXME: find a better interface - if(video_device&&!strncmp(video_device,"x11:",4)) { - video_grab_format="x11grab"; - } - fmt1 = av_find_input_format(video_grab_format); - vp->device = video_device; - vp->channel = video_channel; - vp->standard = video_standard; - vp->pix_fmt = frame_pix_fmt; - if (av_open_input_file(&ic, "", fmt1, 0, vp) < 0) { - fprintf(stderr, "Could not find video grab device\n"); - exit(1); - } - /* If not enough info to get the stream parameters, we decode the - first frames to get it. */ - if ((ic->ctx_flags & AVFMTCTX_NOHEADER) && av_find_stream_info(ic) < 0) { - fprintf(stderr, "Could not find video grab parameters\n"); - exit(1); - } - /* by now video grab has one stream */ - ic->streams[0]->r_frame_rate.num = vp->time_base.den; - ic->streams[0]->r_frame_rate.den = vp->time_base.num; - input_files[nb_input_files] = ic; - - if (verbose >= 0) - dump_format(ic, nb_input_files, "", 0); - - nb_input_files++; - } - if (has_audio && audio_grab_format) { - AVInputFormat *fmt1; - fmt1 = av_find_input_format(audio_grab_format); - ap->device = audio_device; - if (av_open_input_file(&ic, "", fmt1, 0, ap) < 0) { - fprintf(stderr, "Could not find audio grab device\n"); - exit(1); - } - input_files[nb_input_files] = ic; - - if (verbose >= 0) - dump_format(ic, nb_input_files, "", 0); - - nb_input_files++; - } -} - /* same option as mencoder */ static void opt_pass(const char *pass_str) { @@ -3789,14 +3652,9 @@ const OptionDef options[] = { { "slang", HAS_ARG | OPT_STRING | OPT_SUBTITLE, {(void *)&subtitle_language}, "set the ISO 639 language code (3 letters) of the current subtitle stream" , "code" }, /* grab options */ - { "vd", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_device}, "set video grab device", "device" }, { "vc", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_channel}, "set video grab channel (DV1394 only)", "channel" }, { "tvstd", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_video_standard}, "set television standard (NTSC, PAL (SECAM))", "standard" }, - { "ad", HAS_ARG | OPT_EXPERT | OPT_AUDIO | OPT_GRAB, {(void*)opt_audio_device}, "set audio device", "device" }, - - /* G.2 grab options */ - { "grab", HAS_ARG | OPT_EXPERT | OPT_GRAB, {(void*)opt_grab}, "request grabbing using", "format" }, - { "gd", HAS_ARG | OPT_EXPERT | OPT_VIDEO | OPT_GRAB, {(void*)opt_grab_device}, "set grab device", "device" }, + { "isync", OPT_BOOL | OPT_EXPERT | OPT_GRAB, {(void*)&input_sync}, "sync read on input", "" }, /* muxer options */ { "muxdelay", OPT_FLOAT | HAS_ARG | OPT_EXPERT, {(void*)&mux_max_delay}, "set the maximum demux-decode delay", "seconds" }, @@ -3928,8 +3786,8 @@ int main(int argc, char **argv) } if (nb_input_files == 0) { - input_sync = 1; - prepare_grab(); + fprintf(stderr, "Must supply at least one input file\n"); + exit(1); } ti = getutime(); -- cgit v1.2.3