| /* |
| * ffmpeg filter configuration |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg 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 |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <stdint.h> |
| |
| #include "ffmpeg.h" |
| |
| #include "libavfilter/avfilter.h" |
| #include "libavfilter/buffersink.h" |
| |
| #include "libavresample/avresample.h" |
| |
| #include "libavutil/avassert.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/bprint.h" |
| #include "libavutil/channel_layout.h" |
| #include "libavutil/display.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "libavutil/pixfmt.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/samplefmt.h" |
| |
| |
| static const enum AVPixelFormat *get_compliance_unofficial_pix_fmts(enum AVCodecID codec_id, const enum AVPixelFormat default_formats[]) |
| { |
| static const enum AVPixelFormat mjpeg_formats[] = |
| { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, |
| AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, |
| AV_PIX_FMT_NONE }; |
| static const enum AVPixelFormat ljpeg_formats[] = |
| { AV_PIX_FMT_BGR24 , AV_PIX_FMT_BGRA , AV_PIX_FMT_BGR0, |
| AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, |
| AV_PIX_FMT_YUV420P , AV_PIX_FMT_YUV444P , AV_PIX_FMT_YUV422P, |
| AV_PIX_FMT_NONE}; |
| |
| if (codec_id == AV_CODEC_ID_MJPEG) { |
| return mjpeg_formats; |
| } else if (codec_id == AV_CODEC_ID_LJPEG) { |
| return ljpeg_formats; |
| } else { |
| return default_formats; |
| } |
| } |
| |
| enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, AVCodec *codec, enum AVPixelFormat target) |
| { |
| if (codec && codec->pix_fmts) { |
| const enum AVPixelFormat *p = codec->pix_fmts; |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target); |
| int has_alpha = desc ? desc->nb_components % 2 == 0 : 0; |
| enum AVPixelFormat best= AV_PIX_FMT_NONE; |
| |
| if (enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) { |
| p = get_compliance_unofficial_pix_fmts(enc_ctx->codec_id, p); |
| } |
| for (; *p != AV_PIX_FMT_NONE; p++) { |
| best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL); |
| if (*p == target) |
| break; |
| } |
| if (*p == AV_PIX_FMT_NONE) { |
| if (target != AV_PIX_FMT_NONE) |
| av_log(NULL, AV_LOG_WARNING, |
| "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n", |
| av_get_pix_fmt_name(target), |
| codec->name, |
| av_get_pix_fmt_name(best)); |
| return best; |
| } |
| } |
| return target; |
| } |
| |
| void choose_sample_fmt(AVStream *st, AVCodec *codec) |
| { |
| if (codec && codec->sample_fmts) { |
| const enum AVSampleFormat *p = codec->sample_fmts; |
| for (; *p != -1; p++) { |
| if (*p == st->codec->sample_fmt) |
| break; |
| } |
| if (*p == -1) { |
| if((codec->capabilities & AV_CODEC_CAP_LOSSLESS) && av_get_sample_fmt_name(st->codec->sample_fmt) > av_get_sample_fmt_name(codec->sample_fmts[0])) |
| av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n"); |
| if(av_get_sample_fmt_name(st->codec->sample_fmt)) |
| av_log(NULL, AV_LOG_WARNING, |
| "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n", |
| av_get_sample_fmt_name(st->codec->sample_fmt), |
| codec->name, |
| av_get_sample_fmt_name(codec->sample_fmts[0])); |
| st->codec->sample_fmt = codec->sample_fmts[0]; |
| } |
| } |
| } |
| |
| static char *choose_pix_fmts(OutputStream *ost) |
| { |
| AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0); |
| if (strict_dict) |
| // used by choose_pixel_fmt() and below |
| av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0); |
| |
| if (ost->keep_pix_fmt) { |
| if (ost->filter) |
| avfilter_graph_set_auto_convert(ost->filter->graph->graph, |
| AVFILTER_AUTO_CONVERT_NONE); |
| if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE) |
| return NULL; |
| return av_strdup(av_get_pix_fmt_name(ost->enc_ctx->pix_fmt)); |
| } |
| if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) { |
| return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt))); |
| } else if (ost->enc && ost->enc->pix_fmts) { |
| const enum AVPixelFormat *p; |
| AVIOContext *s = NULL; |
| uint8_t *ret; |
| int len; |
| |
| if (avio_open_dyn_buf(&s) < 0) |
| exit_program(1); |
| |
| p = ost->enc->pix_fmts; |
| if (ost->enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) { |
| p = get_compliance_unofficial_pix_fmts(ost->enc_ctx->codec_id, p); |
| } |
| |
| for (; *p != AV_PIX_FMT_NONE; p++) { |
| const char *name = av_get_pix_fmt_name(*p); |
| avio_printf(s, "%s|", name); |
| } |
| len = avio_close_dyn_buf(s, &ret); |
| ret[len - 1] = 0; |
| return ret; |
| } else |
| return NULL; |
| } |
| |
| /* Define a function for building a string containing a list of |
| * allowed formats. */ |
| #define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name) \ |
| static char *choose_ ## var ## s(OutputStream *ost) \ |
| { \ |
| if (ost->enc_ctx->var != none) { \ |
| get_name(ost->enc_ctx->var); \ |
| return av_strdup(name); \ |
| } else if (ost->enc && ost->enc->supported_list) { \ |
| const type *p; \ |
| AVIOContext *s = NULL; \ |
| uint8_t *ret; \ |
| int len; \ |
| \ |
| if (avio_open_dyn_buf(&s) < 0) \ |
| exit_program(1); \ |
| \ |
| for (p = ost->enc->supported_list; *p != none; p++) { \ |
| get_name(*p); \ |
| avio_printf(s, "%s|", name); \ |
| } \ |
| len = avio_close_dyn_buf(s, &ret); \ |
| ret[len - 1] = 0; \ |
| return ret; \ |
| } else \ |
| return NULL; \ |
| } |
| |
| // DEF_CHOOSE_FORMAT(enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE, |
| // GET_PIX_FMT_NAME) |
| |
| DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts, |
| AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME) |
| |
| DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0, |
| GET_SAMPLE_RATE_NAME) |
| |
| DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0, |
| GET_CH_LAYOUT_NAME) |
| |
| FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost) |
| { |
| FilterGraph *fg = av_mallocz(sizeof(*fg)); |
| |
| if (!fg) |
| exit_program(1); |
| fg->index = nb_filtergraphs; |
| |
| GROW_ARRAY(fg->outputs, fg->nb_outputs); |
| if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0])))) |
| exit_program(1); |
| fg->outputs[0]->ost = ost; |
| fg->outputs[0]->graph = fg; |
| |
| ost->filter = fg->outputs[0]; |
| |
| GROW_ARRAY(fg->inputs, fg->nb_inputs); |
| if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0])))) |
| exit_program(1); |
| fg->inputs[0]->ist = ist; |
| fg->inputs[0]->graph = fg; |
| |
| GROW_ARRAY(ist->filters, ist->nb_filters); |
| ist->filters[ist->nb_filters - 1] = fg->inputs[0]; |
| |
| GROW_ARRAY(filtergraphs, nb_filtergraphs); |
| filtergraphs[nb_filtergraphs - 1] = fg; |
| |
| return fg; |
| } |
| |
| static void init_input_filter(FilterGraph *fg, AVFilterInOut *in) |
| { |
| InputStream *ist = NULL; |
| enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx); |
| int i; |
| |
| // TODO: support other filter types |
| if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) { |
| av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported " |
| "currently.\n"); |
| exit_program(1); |
| } |
| |
| if (in->name) { |
| AVFormatContext *s; |
| AVStream *st = NULL; |
| char *p; |
| int file_idx = strtol(in->name, &p, 0); |
| |
| if (file_idx < 0 || file_idx >= nb_input_files) { |
| av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n", |
| file_idx, fg->graph_desc); |
| exit_program(1); |
| } |
| s = input_files[file_idx]->ctx; |
| |
| for (i = 0; i < s->nb_streams; i++) { |
| enum AVMediaType stream_type = s->streams[i]->codec->codec_type; |
| if (stream_type != type && |
| !(stream_type == AVMEDIA_TYPE_SUBTITLE && |
| type == AVMEDIA_TYPE_VIDEO /* sub2video hack */)) |
| continue; |
| if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) { |
| st = s->streams[i]; |
| break; |
| } |
| } |
| if (!st) { |
| av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s " |
| "matches no streams.\n", p, fg->graph_desc); |
| exit_program(1); |
| } |
| ist = input_streams[input_files[file_idx]->ist_index + st->index]; |
| } else { |
| /* find the first unused stream of corresponding type */ |
| for (i = 0; i < nb_input_streams; i++) { |
| ist = input_streams[i]; |
| if (ist->dec_ctx->codec_type == type && ist->discard) |
| break; |
| } |
| if (i == nb_input_streams) { |
| av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for " |
| "unlabeled input pad %d on filter %s\n", in->pad_idx, |
| in->filter_ctx->name); |
| exit_program(1); |
| } |
| } |
| av_assert0(ist); |
| |
| ist->discard = 0; |
| ist->decoding_needed |= DECODING_FOR_FILTER; |
| ist->st->discard = AVDISCARD_NONE; |
| |
| GROW_ARRAY(fg->inputs, fg->nb_inputs); |
| if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0])))) |
| exit_program(1); |
| fg->inputs[fg->nb_inputs - 1]->ist = ist; |
| fg->inputs[fg->nb_inputs - 1]->graph = fg; |
| |
| GROW_ARRAY(ist->filters, ist->nb_filters); |
| ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1]; |
| } |
| |
| int init_complex_filtergraph(FilterGraph *fg) |
| { |
| AVFilterInOut *inputs, *outputs, *cur; |
| AVFilterGraph *graph; |
| int ret = 0; |
| |
| /* this graph is only used for determining the kinds of inputs |
| * and outputs we have, and is discarded on exit from this function */ |
| graph = avfilter_graph_alloc(); |
| if (!graph) |
| return AVERROR(ENOMEM); |
| |
| ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs); |
| if (ret < 0) |
| goto fail; |
| |
| for (cur = inputs; cur; cur = cur->next) |
| init_input_filter(fg, cur); |
| |
| for (cur = outputs; cur;) { |
| GROW_ARRAY(fg->outputs, fg->nb_outputs); |
| fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0])); |
| if (!fg->outputs[fg->nb_outputs - 1]) |
| exit_program(1); |
| |
| fg->outputs[fg->nb_outputs - 1]->graph = fg; |
| fg->outputs[fg->nb_outputs - 1]->out_tmp = cur; |
| fg->outputs[fg->nb_outputs - 1]->type = avfilter_pad_get_type(cur->filter_ctx->output_pads, |
| cur->pad_idx); |
| cur = cur->next; |
| fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL; |
| } |
| |
| fail: |
| avfilter_inout_free(&inputs); |
| avfilter_graph_free(&graph); |
| return ret; |
| } |
| |
| static int insert_trim(int64_t start_time, int64_t duration, |
| AVFilterContext **last_filter, int *pad_idx, |
| const char *filter_name) |
| { |
| AVFilterGraph *graph = (*last_filter)->graph; |
| AVFilterContext *ctx; |
| const AVFilter *trim; |
| enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx); |
| const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim"; |
| int ret = 0; |
| |
| if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE) |
| return 0; |
| |
| trim = avfilter_get_by_name(name); |
| if (!trim) { |
| av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit " |
| "recording time.\n", name); |
| return AVERROR_FILTER_NOT_FOUND; |
| } |
| |
| ctx = avfilter_graph_alloc_filter(graph, trim, filter_name); |
| if (!ctx) |
| return AVERROR(ENOMEM); |
| |
| if (duration != INT64_MAX) { |
| ret = av_opt_set_int(ctx, "durationi", duration, |
| AV_OPT_SEARCH_CHILDREN); |
| } |
| if (ret >= 0 && start_time != AV_NOPTS_VALUE) { |
| ret = av_opt_set_int(ctx, "starti", start_time, |
| AV_OPT_SEARCH_CHILDREN); |
| } |
| if (ret < 0) { |
| av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name); |
| return ret; |
| } |
| |
| ret = avfilter_init_str(ctx, NULL); |
| if (ret < 0) |
| return ret; |
| |
| ret = avfilter_link(*last_filter, *pad_idx, ctx, 0); |
| if (ret < 0) |
| return ret; |
| |
| *last_filter = ctx; |
| *pad_idx = 0; |
| return 0; |
| } |
| |
| static int insert_filter(AVFilterContext **last_filter, int *pad_idx, |
| const char *filter_name, const char *args) |
| { |
| AVFilterGraph *graph = (*last_filter)->graph; |
| AVFilterContext *ctx; |
| int ret; |
| |
| ret = avfilter_graph_create_filter(&ctx, |
| avfilter_get_by_name(filter_name), |
| filter_name, args, NULL, graph); |
| if (ret < 0) |
| return ret; |
| |
| ret = avfilter_link(*last_filter, *pad_idx, ctx, 0); |
| if (ret < 0) |
| return ret; |
| |
| *last_filter = ctx; |
| *pad_idx = 0; |
| 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; |
| 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; |
| } |
| |
| 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; |
| } |
| |
| #define DESCRIBE_FILTER_LINK(f, inout, in) \ |
| { \ |
| AVFilterContext *ctx = inout->filter_ctx; \ |
| AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads; \ |
| int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs; \ |
| AVIOContext *pb; \ |
| \ |
| if (avio_open_dyn_buf(&pb) < 0) \ |
| exit_program(1); \ |
| \ |
| avio_printf(pb, "%s", ctx->filter->name); \ |
| if (nb_pads > 1) \ |
| avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\ |
| avio_w8(pb, 0); \ |
| avio_close_dyn_buf(pb, &f->name); \ |
| } |
| |
| int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out) |
| { |
| av_freep(&ofilter->name); |
| DESCRIBE_FILTER_LINK(ofilter, out, 0); |
| |
| if (!ofilter->ost) { |
| av_log(NULL, AV_LOG_FATAL, "Filter %s has a unconnected output\n", ofilter->name); |
| exit_program(1); |
| } |
| |
| switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) { |
| case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out); |
| case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out); |
| default: av_assert0(0); |
| } |
| } |
| |
| static int sub2video_prepare(InputStream *ist) |
| { |
| AVFormatContext *avf = input_files[ist->file_index]->ctx; |
| int i, w, h; |
| |
| /* Compute the size of the canvas for the subtitles stream. |
| If the subtitles codec has set a size, use it. Otherwise use the |
| maximum dimensions of the video streams in the same file. */ |
| w = ist->dec_ctx->width; |
| h = ist->dec_ctx->height; |
| if (!(w && h)) { |
| for (i = 0; i < avf->nb_streams; i++) { |
| if (avf->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) { |
| w = FFMAX(w, avf->streams[i]->codec->width); |
| h = FFMAX(h, avf->streams[i]->codec->height); |
| } |
| } |
| if (!(w && h)) { |
| w = FFMAX(w, 720); |
| h = FFMAX(h, 576); |
| } |
| av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h); |
| } |
| ist->sub2video.w = ist->resample_width = w; |
| ist->sub2video.h = ist->resample_height = h; |
| |
| /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the |
| palettes for all rectangles are identical or compatible */ |
| ist->resample_pix_fmt = ist->dec_ctx->pix_fmt = AV_PIX_FMT_RGB32; |
| |
| ist->sub2video.frame = av_frame_alloc(); |
| if (!ist->sub2video.frame) |
| return AVERROR(ENOMEM); |
| ist->sub2video.last_pts = INT64_MIN; |
| 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_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_filter(FilterGraph *fg, InputFilter *ifilter, |
| AVFilterInOut *in) |
| { |
| av_freep(&ifilter->name); |
| DESCRIBE_FILTER_LINK(ifilter, in, 1); |
| |
| if (!ifilter->ist->dec) { |
| av_log(NULL, AV_LOG_ERROR, |
| "No decoder for stream #%d:%d, filtering impossible\n", |
| ifilter->ist->file_index, ifilter->ist->st->index); |
| return AVERROR_DECODER_NOT_FOUND; |
| } |
| switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) { |
| case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in); |
| case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in); |
| default: av_assert0(0); |
| } |
| } |
| |
| int configure_filtergraph(FilterGraph *fg) |
| { |
| AVFilterInOut *inputs, *outputs, *cur; |
| int ret, i, simple = !fg->graph_desc; |
| const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter : |
| fg->graph_desc; |
| |
| avfilter_graph_free(&fg->graph); |
| if (!(fg->graph = avfilter_graph_alloc())) |
| return AVERROR(ENOMEM); |
| |
| if (simple) { |
| OutputStream *ost = fg->outputs[0]->ost; |
| char args[512]; |
| AVDictionaryEntry *e = NULL; |
| |
| args[0] = 0; |
| while ((e = av_dict_get(ost->sws_dict, "", e, |
| AV_DICT_IGNORE_SUFFIX))) { |
| av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value); |
| } |
| if (strlen(args)) |
| args[strlen(args)-1] = 0; |
| fg->graph->scale_sws_opts = av_strdup(args); |
| |
| args[0] = 0; |
| while ((e = av_dict_get(ost->swr_opts, "", e, |
| AV_DICT_IGNORE_SUFFIX))) { |
| av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value); |
| } |
| if (strlen(args)) |
| args[strlen(args)-1] = 0; |
| av_opt_set(fg->graph, "aresample_swr_opts", args, 0); |
| |
| args[0] = '\0'; |
| while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e, |
| AV_DICT_IGNORE_SUFFIX))) { |
| av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value); |
| } |
| if (strlen(args)) |
| args[strlen(args) - 1] = '\0'; |
| fg->graph->resample_lavr_opts = av_strdup(args); |
| |
| e = av_dict_get(ost->encoder_opts, "threads", NULL, 0); |
| if (e) |
| av_opt_set(fg->graph, "threads", e->value, 0); |
| } |
| |
| if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0) |
| return ret; |
| |
| if (simple && (!inputs || inputs->next || !outputs || outputs->next)) { |
| const char *num_inputs; |
| const char *num_outputs; |
| if (!outputs) { |
| num_outputs = "0"; |
| } else if (outputs->next) { |
| num_outputs = ">1"; |
| } else { |
| num_outputs = "1"; |
| } |
| if (!inputs) { |
| num_inputs = "0"; |
| } else if (inputs->next) { |
| num_inputs = ">1"; |
| } else { |
| num_inputs = "1"; |
| } |
| av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' was expected " |
| "to have exactly 1 input and 1 output." |
| " However, it had %s input(s) and %s output(s)." |
| " Please adjust, or use a complex filtergraph (-filter_complex) instead.\n", |
| graph_desc, num_inputs, num_outputs); |
| return AVERROR(EINVAL); |
| } |
| |
| for (cur = inputs, i = 0; cur; cur = cur->next, i++) |
| if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) { |
| avfilter_inout_free(&inputs); |
| avfilter_inout_free(&outputs); |
| return ret; |
| } |
| avfilter_inout_free(&inputs); |
| |
| for (cur = outputs, i = 0; cur; cur = cur->next, i++) |
| configure_output_filter(fg, fg->outputs[i], cur); |
| avfilter_inout_free(&outputs); |
| |
| if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0) |
| return ret; |
| |
| fg->reconfiguration = 1; |
| |
| for (i = 0; i < fg->nb_outputs; i++) { |
| OutputStream *ost = fg->outputs[i]->ost; |
| if (!ost->enc) { |
| /* identical to the same check in ffmpeg.c, needed because |
| complex filter graphs are initialized earlier */ |
| av_log(NULL, AV_LOG_ERROR, "Encoder (codec %s) not found for output stream #%d:%d\n", |
| avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index); |
| return AVERROR(EINVAL); |
| } |
| if (ost->enc->type == AVMEDIA_TYPE_AUDIO && |
| !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) |
| av_buffersink_set_frame_size(ost->filter->filter, |
| ost->enc_ctx->frame_size); |
| } |
| |
| return 0; |
| } |
| |
| int ist_in_filtergraph(FilterGraph *fg, InputStream *ist) |
| { |
| int i; |
| for (i = 0; i < fg->nb_inputs; i++) |
| if (fg->inputs[i]->ist == ist) |
| return 1; |
| return 0; |
| } |
| |
