static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in) { AVFilterContext *last_filter; const AVFilter *buffer_filt = avfilter_get_by_name("buffer"); InputStream *ist = ifilter->ist; InputFile *f = input_files[ist->file_index]; AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) : ist->st->time_base; AVRational sar; char args[255], name[255]; int ret, pad_idx = 0; sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio : ist->dec_ctx->sample_aspect_ratio; snprintf(args, sizeof(args), "%d:%d:%d:%d:%d:%d:%d", ist->dec_ctx->width, ist->dec_ctx->height, ist->hwaccel_retrieve_data ? ist->hwaccel_retrieved_pix_fmt : ist->dec_ctx->pix_fmt, tb.num, tb.den, sar.num, sar.den); snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index, ist->file_index, ist->st->index); if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name, args, NULL, fg->graph)) < 0) return ret; last_filter = ifilter->filter; if (ist->framerate.num) { AVFilterContext *setpts; snprintf(name, sizeof(name), "force CFR for input from stream %d:%d", ist->file_index, ist->st->index); if ((ret = avfilter_graph_create_filter(&setpts, avfilter_get_by_name("setpts"), name, "N", NULL, fg->graph)) < 0) return ret; if ((ret = avfilter_link(last_filter, 0, setpts, 0)) < 0) return ret; last_filter = setpts; } snprintf(name, sizeof(name), "trim for input stream %d:%d", ist->file_index, ist->st->index); ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ? AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name); if (ret < 0) return ret; if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0) return ret; return 0; }
static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in) { AVFilterContext *last_filter; const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer"); InputStream *ist = ifilter->ist; InputFile *f = input_files[ist->file_index]; char args[255], name[255]; int ret, pad_idx = 0; snprintf(args, sizeof(args), "time_base=%d/%d:sample_rate=%d:sample_fmt=%s" ":channel_layout=0x%"PRIx64, 1, ist->dec_ctx->sample_rate, ist->dec_ctx->sample_rate, av_get_sample_fmt_name(ist->dec_ctx->sample_fmt), ist->dec_ctx->channel_layout); snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index, ist->file_index, ist->st->index); if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt, name, args, NULL, fg->graph)) < 0) return ret; last_filter = ifilter->filter; if (audio_sync_method > 0) { AVFilterContext *async; int len = 0; av_log(NULL, AV_LOG_WARNING, "-async has been deprecated. Used the " "asyncts audio filter instead.\n"); if (audio_sync_method > 1) len += snprintf(args + len, sizeof(args) - len, "compensate=1:" "max_comp=%d:", audio_sync_method); snprintf(args + len, sizeof(args) - len, "min_delta=%f", audio_drift_threshold); snprintf(name, sizeof(name), "graph %d audio sync for input stream %d:%d", fg->index, ist->file_index, ist->st->index); ret = avfilter_graph_create_filter(&async, avfilter_get_by_name("asyncts"), name, args, NULL, fg->graph); if (ret < 0) return ret; ret = avfilter_link(last_filter, 0, async, 0); if (ret < 0) return ret; last_filter = async; } if (audio_volume != 256) { AVFilterContext *volume; av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume " "audio filter instead.\n"); snprintf(args, sizeof(args), "volume=%f", audio_volume / 256.0); snprintf(name, sizeof(name), "graph %d volume for input stream %d:%d", fg->index, ist->file_index, ist->st->index); ret = avfilter_graph_create_filter(&volume, avfilter_get_by_name("volume"), name, args, NULL, fg->graph); if (ret < 0) return ret; ret = avfilter_link(last_filter, 0, volume, 0); if (ret < 0) return ret; last_filter = volume; } snprintf(name, sizeof(name), "trim for input stream %d:%d", ist->file_index, ist->st->index); ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ? AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name); if (ret < 0) return ret; if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0) return ret; return 0; }
static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in) { AVFilterContext *last_filter; const AVFilter *buffer_filt = avfilter_get_by_name("buffer"); InputStream *ist = ifilter->ist; InputFile *f = input_files[ist->file_index]; AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) : ist->st->time_base; AVRational sar; char args[255], name[255]; int ret, pad_idx = 0; sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio : ist->dec_ctx->sample_aspect_ratio; snprintf(args, sizeof(args), "width=%d:height=%d:pix_fmt=%d:time_base=%d/%d:sar=%d/%d", ist->dec_ctx->width, ist->dec_ctx->height, ist->hwaccel_retrieve_data ? ist->hwaccel_retrieved_pix_fmt : ist->dec_ctx->pix_fmt, tb.num, tb.den, sar.num, sar.den); snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index, ist->file_index, ist->st->index); if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name, args, NULL, fg->graph)) < 0) return ret; last_filter = ifilter->filter; if (ist->autorotate) { uint8_t* displaymatrix = av_stream_get_side_data(ist->st, AV_PKT_DATA_DISPLAYMATRIX, NULL); if (displaymatrix) { double rot = av_display_rotation_get((int32_t*) displaymatrix); if (rot < -135 || rot > 135) { ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL); if (ret < 0) return ret; ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL); } else if (rot < -45) { ret = insert_filter(&last_filter, &pad_idx, "transpose", "dir=clock"); } else if (rot > 45) { ret = insert_filter(&last_filter, &pad_idx, "transpose", "dir=cclock"); } if (ret < 0) return ret; } } if (ist->framerate.num) { AVFilterContext *setpts; snprintf(name, sizeof(name), "force CFR for input from stream %d:%d", ist->file_index, ist->st->index); if ((ret = avfilter_graph_create_filter(&setpts, avfilter_get_by_name("setpts"), name, "N", NULL, fg->graph)) < 0) return ret; if ((ret = avfilter_link(last_filter, 0, setpts, 0)) < 0) return ret; last_filter = setpts; } snprintf(name, sizeof(name), "trim for input stream %d:%d", ist->file_index, ist->st->index); ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ? AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name); if (ret < 0) return ret; if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0) return ret; return 0; }
static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) { OutputStream *ost = ofilter->ost; OutputFile *of = output_files[ost->file_index]; AVCodecContext *codec = ost->enc_ctx; AVFilterContext *last_filter = out->filter_ctx; int pad_idx = out->pad_idx; char *sample_fmts, *sample_rates, *channel_layouts; char name[255]; int ret; snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&ofilter->filter, avfilter_get_by_name("abuffersink"), name, NULL, NULL, fg->graph); if (ret < 0) return ret; if (codec->channels && !codec->channel_layout) codec->channel_layout = av_get_default_channel_layout(codec->channels); sample_fmts = choose_sample_fmts(ost); sample_rates = choose_sample_rates(ost); channel_layouts = choose_channel_layouts(ost); if (sample_fmts || sample_rates || channel_layouts) { AVFilterContext *format; char args[256]; int len = 0; if (sample_fmts) len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:", sample_fmts); if (sample_rates) len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:", sample_rates); if (channel_layouts) len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:", channel_layouts); args[len - 1] = 0; av_freep(&sample_fmts); av_freep(&sample_rates); av_freep(&channel_layouts); snprintf(name, sizeof(name), "audio format for output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&format, avfilter_get_by_name("aformat"), name, args, NULL, fg->graph); if (ret < 0) return ret; ret = avfilter_link(last_filter, pad_idx, format, 0); if (ret < 0) return ret; last_filter = format; pad_idx = 0; } snprintf(name, sizeof(name), "trim for output stream %d:%d", ost->file_index, ost->index); ret = insert_trim(of->start_time, of->recording_time, &last_filter, &pad_idx, name); if (ret < 0) return ret; if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0) return ret; return 0; }
static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) { char *pix_fmts; OutputStream *ost = ofilter->ost; OutputFile *of = output_files[ost->file_index]; AVCodecContext *codec = ost->enc_ctx; AVFilterContext *last_filter = out->filter_ctx; int pad_idx = out->pad_idx; int ret; char name[255]; snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&ofilter->filter, avfilter_get_by_name("buffersink"), name, NULL, NULL, fg->graph); if (ret < 0) return ret; if (codec->width || codec->height) { char args[255]; AVFilterContext *filter; snprintf(args, sizeof(args), "%d:%d:0x%X", codec->width, codec->height, (unsigned)ost->sws_flags); snprintf(name, sizeof(name), "scaler for output stream %d:%d", ost->file_index, ost->index); if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"), name, args, NULL, fg->graph)) < 0) return ret; if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0) return ret; last_filter = filter; pad_idx = 0; } if ((pix_fmts = choose_pix_fmts(ost))) { AVFilterContext *filter; snprintf(name, sizeof(name), "pixel format for output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("format"), "format", pix_fmts, NULL, fg->graph); av_freep(&pix_fmts); if (ret < 0) return ret; if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0) return ret; last_filter = filter; pad_idx = 0; } if (ost->frame_rate.num) { AVFilterContext *fps; char args[255]; snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num, ost->frame_rate.den); snprintf(name, sizeof(name), "fps for output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"), name, args, NULL, fg->graph); if (ret < 0) return ret; ret = avfilter_link(last_filter, pad_idx, fps, 0); if (ret < 0) return ret; last_filter = fps; pad_idx = 0; } snprintf(name, sizeof(name), "trim for output stream %d:%d", ost->file_index, ost->index); ret = insert_trim(of->start_time, of->recording_time, &last_filter, &pad_idx, name); if (ret < 0) return ret; if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0) return ret; return 0; }
static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in) { AVFilterContext *last_filter; const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer"); InputStream *ist = ifilter->ist; InputFile *f = input_files[ist->file_index]; AVBPrint args; char name[255]; int ret, pad_idx = 0; int64_t tsoffset = 0; if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO) { av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n"); return AVERROR(EINVAL); } av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC); av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s", 1, ist->dec_ctx->sample_rate, ist->dec_ctx->sample_rate, av_get_sample_fmt_name(ist->dec_ctx->sample_fmt)); if (ist->dec_ctx->channel_layout) av_bprintf(&args, ":channel_layout=0x%"PRIx64, ist->dec_ctx->channel_layout); else av_bprintf(&args, ":channels=%d", ist->dec_ctx->channels); snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index, ist->file_index, ist->st->index); if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt, name, args.str, NULL, fg->graph)) < 0) return ret; last_filter = ifilter->filter; #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do { \ AVFilterContext *filt_ctx; \ \ av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \ "similarly to -af " filter_name "=%s.\n", arg); \ \ snprintf(name, sizeof(name), "graph %d %s for input stream %d:%d", \ fg->index, filter_name, ist->file_index, ist->st->index); \ ret = avfilter_graph_create_filter(&filt_ctx, \ avfilter_get_by_name(filter_name), \ name, arg, NULL, fg->graph); \ if (ret < 0) \ return ret; \ \ ret = avfilter_link(last_filter, 0, filt_ctx, 0); \ if (ret < 0) \ return ret; \ \ last_filter = filt_ctx; \ } while (0) if (audio_sync_method > 0) { char args[256] = {0}; av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method); if (audio_drift_threshold != 0.1) av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold); if (!fg->reconfiguration) av_strlcatf(args, sizeof(args), ":first_pts=0"); AUTO_INSERT_FILTER_INPUT("-async", "aresample", args); } // if (ost->audio_channels_mapped) { // int i; // AVBPrint pan_buf; // av_bprint_init(&pan_buf, 256, 8192); // av_bprintf(&pan_buf, "0x%"PRIx64, // av_get_default_channel_layout(ost->audio_channels_mapped)); // for (i = 0; i < ost->audio_channels_mapped; i++) // if (ost->audio_channels_map[i] != -1) // av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]); // AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str); // av_bprint_finalize(&pan_buf, NULL); // } if (audio_volume != 256) { char args[256]; av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume " "audio filter instead.\n"); snprintf(args, sizeof(args), "%f", audio_volume / 256.); AUTO_INSERT_FILTER_INPUT("-vol", "volume", args); } snprintf(name, sizeof(name), "trim for input stream %d:%d", ist->file_index, ist->st->index); if (copy_ts) { tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time; if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE) tsoffset += f->ctx->start_time; } ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ? AV_NOPTS_VALUE : tsoffset, f->recording_time, &last_filter, &pad_idx, name); if (ret < 0) return ret; if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0) return ret; return 0; }
static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter, AVFilterInOut *in) { AVFilterContext *last_filter; const AVFilter *buffer_filt = avfilter_get_by_name("buffer"); InputStream *ist = ifilter->ist; InputFile *f = input_files[ist->file_index]; AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) : ist->st->time_base; AVRational fr = ist->framerate; AVRational sar; AVBPrint args; char name[255]; int ret, pad_idx = 0; int64_t tsoffset = 0; if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) { av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n"); return AVERROR(EINVAL); } if (!fr.num) fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL); if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) { ret = sub2video_prepare(ist); if (ret < 0) return ret; } sar = ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio : ist->dec_ctx->sample_aspect_ratio; if(!sar.den) sar = (AVRational){0,1}; av_bprint_init(&args, 0, 1); av_bprintf(&args, "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:" "pixel_aspect=%d/%d:sws_param=flags=%d", ist->resample_width, ist->resample_height, ist->hwaccel_retrieve_data ? ist->hwaccel_retrieved_pix_fmt : ist->resample_pix_fmt, tb.num, tb.den, sar.num, sar.den, SWS_BILINEAR + ((ist->dec_ctx->flags&AV_CODEC_FLAG_BITEXACT) ? SWS_BITEXACT:0)); if (fr.num && fr.den) av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den); snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index, ist->file_index, ist->st->index); if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name, args.str, NULL, fg->graph)) < 0) return ret; last_filter = ifilter->filter; if (ist->autorotate) { double theta = get_rotation(ist->st); if (fabs(theta - 90) < 1.0) { ret = insert_filter(&last_filter, &pad_idx, "transpose", "clock"); } else if (fabs(theta - 180) < 1.0) { ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL); if (ret < 0) return ret; ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL); } else if (fabs(theta - 270) < 1.0) { ret = insert_filter(&last_filter, &pad_idx, "transpose", "cclock"); } else if (fabs(theta) > 1.0) { char rotate_buf[64]; snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta); ret = insert_filter(&last_filter, &pad_idx, "rotate", rotate_buf); } if (ret < 0) return ret; } if (ist->framerate.num) { AVFilterContext *setpts; snprintf(name, sizeof(name), "force CFR for input from stream %d:%d", ist->file_index, ist->st->index); if ((ret = avfilter_graph_create_filter(&setpts, avfilter_get_by_name("setpts"), name, "N", NULL, fg->graph)) < 0) return ret; if ((ret = avfilter_link(last_filter, 0, setpts, 0)) < 0) return ret; last_filter = setpts; } if (do_deinterlace) { AVFilterContext *yadif; snprintf(name, sizeof(name), "deinterlace input from stream %d:%d", ist->file_index, ist->st->index); if ((ret = avfilter_graph_create_filter(&yadif, avfilter_get_by_name("yadif"), name, "", NULL, fg->graph)) < 0) return ret; if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0) return ret; last_filter = yadif; } snprintf(name, sizeof(name), "trim for input stream %d:%d", ist->file_index, ist->st->index); if (copy_ts) { tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time; if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE) tsoffset += f->ctx->start_time; } ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ? AV_NOPTS_VALUE : tsoffset, f->recording_time, &last_filter, &pad_idx, name); if (ret < 0) return ret; if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0) return ret; return 0; }
static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) { OutputStream *ost = ofilter->ost; OutputFile *of = output_files[ost->file_index]; AVCodecContext *codec = ost->enc_ctx; AVFilterContext *last_filter = out->filter_ctx; int pad_idx = out->pad_idx; char *sample_fmts, *sample_rates, *channel_layouts; char name[255]; int ret; snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&ofilter->filter, avfilter_get_by_name("abuffersink"), name, NULL, NULL, fg->graph); if (ret < 0) return ret; if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0) return ret; #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do { \ AVFilterContext *filt_ctx; \ \ av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \ "similarly to -af " filter_name "=%s.\n", arg); \ \ ret = avfilter_graph_create_filter(&filt_ctx, \ avfilter_get_by_name(filter_name), \ filter_name, arg, NULL, fg->graph); \ if (ret < 0) \ return ret; \ \ ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0); \ if (ret < 0) \ return ret; \ \ last_filter = filt_ctx; \ pad_idx = 0; \ } while (0) if (ost->audio_channels_mapped) { int i; AVBPrint pan_buf; av_bprint_init(&pan_buf, 256, 8192); av_bprintf(&pan_buf, "0x%"PRIx64, av_get_default_channel_layout(ost->audio_channels_mapped)); for (i = 0; i < ost->audio_channels_mapped; i++) if (ost->audio_channels_map[i] != -1) av_bprintf(&pan_buf, "|c%d=c%d", i, ost->audio_channels_map[i]); AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str); av_bprint_finalize(&pan_buf, NULL); } if (codec->channels && !codec->channel_layout) codec->channel_layout = av_get_default_channel_layout(codec->channels); sample_fmts = choose_sample_fmts(ost); sample_rates = choose_sample_rates(ost); channel_layouts = choose_channel_layouts(ost); if (sample_fmts || sample_rates || channel_layouts) { AVFilterContext *format; char args[256]; args[0] = 0; if (sample_fmts) av_strlcatf(args, sizeof(args), "sample_fmts=%s:", sample_fmts); if (sample_rates) av_strlcatf(args, sizeof(args), "sample_rates=%s:", sample_rates); if (channel_layouts) av_strlcatf(args, sizeof(args), "channel_layouts=%s:", channel_layouts); av_freep(&sample_fmts); av_freep(&sample_rates); av_freep(&channel_layouts); snprintf(name, sizeof(name), "audio format for output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&format, avfilter_get_by_name("aformat"), name, args, NULL, fg->graph); if (ret < 0) return ret; ret = avfilter_link(last_filter, pad_idx, format, 0); if (ret < 0) return ret; last_filter = format; pad_idx = 0; } if (audio_volume != 256 && 0) { char args[256]; snprintf(args, sizeof(args), "%f", audio_volume / 256.); AUTO_INSERT_FILTER("-vol", "volume", args); } if (ost->apad && of->shortest) { char args[256]; int i; for (i=0; i<of->ctx->nb_streams; i++) if (of->ctx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) break; if (i<of->ctx->nb_streams) { snprintf(args, sizeof(args), "%s", ost->apad); AUTO_INSERT_FILTER("-apad", "apad", args); } } snprintf(name, sizeof(name), "trim for output stream %d:%d", ost->file_index, ost->index); ret = insert_trim(of->start_time, of->recording_time, &last_filter, &pad_idx, name); if (ret < 0) return ret; if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0) return ret; return 0; }
static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) { char *pix_fmts; OutputStream *ost = ofilter->ost; OutputFile *of = output_files[ost->file_index]; AVCodecContext *codec = ost->enc_ctx; AVFilterContext *last_filter = out->filter_ctx; int pad_idx = out->pad_idx; int ret; char name[255]; snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&ofilter->filter, avfilter_get_by_name("buffersink"), name, NULL, NULL, fg->graph); if(ret < 0) { return ret; } if(!hw_device_ctx && (codec->width || codec->height)) { char args[255]; AVFilterContext *filter; AVDictionaryEntry *e = NULL; snprintf(args, sizeof(args), "%d:%d", codec->width, codec->height); while((e = av_dict_get(ost->sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) { av_strlcatf(args, sizeof(args), ":%s=%s", e->key, e->value); } snprintf(name, sizeof(name), "scaler for output stream %d:%d", ost->file_index, ost->index); if((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"), name, args, NULL, fg->graph)) < 0) { return ret; } if((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0) { return ret; } last_filter = filter; pad_idx = 0; } if((pix_fmts = choose_pix_fmts(ost))) { AVFilterContext *filter; snprintf(name, sizeof(name), "pixel format for output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("format"), "format", pix_fmts, NULL, fg->graph); av_freep(&pix_fmts); if(ret < 0) { return ret; } if((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0) { return ret; } last_filter = filter; pad_idx = 0; } if(ost->frame_rate.num && 0) { AVFilterContext *fps; char args[255]; snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num, ost->frame_rate.den); snprintf(name, sizeof(name), "fps for output stream %d:%d", ost->file_index, ost->index); ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"), name, args, NULL, fg->graph); if(ret < 0) { return ret; } ret = avfilter_link(last_filter, pad_idx, fps, 0); if(ret < 0) { return ret; } last_filter = fps; pad_idx = 0; } snprintf(name, sizeof(name), "trim for output stream %d:%d", ost->file_index, ost->index); ret = insert_trim(of->start_time, of->recording_time, &last_filter, &pad_idx, name); if(ret < 0) { return ret; } if((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0) { return ret; } return 0; }