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- /*
- * 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 "libavfilter/buffersrc.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;
- }
- }
- static enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx,
- const 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);
- //FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
- 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 = av_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;
- }
- static char *choose_pix_fmts(OutputFilter *ofilter)
- {
- OutputStream *ost = ofilter->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) {
- avfilter_graph_set_auto_convert(ofilter->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(suffix, type, var, supported_list, none, get_name) \
- static char *choose_ ## suffix (OutputFilter *ofilter) \
- { \
- if (ofilter->var != none) { \
- get_name(ofilter->var); \
- return av_strdup(name); \
- } else if (ofilter->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 = ofilter->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(pix_fmts, enum AVPixelFormat, format, formats, AV_PIX_FMT_NONE,
- // GET_PIX_FMT_NAME)
- DEF_CHOOSE_FORMAT(sample_fmts, enum AVSampleFormat, format, formats,
- AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
- DEF_CHOOSE_FORMAT(sample_rates, int, sample_rate, sample_rates, 0,
- GET_SAMPLE_RATE_NAME)
- DEF_CHOOSE_FORMAT(channel_layouts, uint64_t, channel_layout, channel_layouts, 0,
- GET_CH_LAYOUT_NAME)
- int 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;
- fg->outputs[0]->format = -1;
- 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;
- fg->inputs[0]->format = -1;
- fg->inputs[0]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
- if (!fg->inputs[0]->frame_queue)
- exit_program(1);
- 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 0;
- }
- static char *describe_filter_link(FilterGraph *fg, AVFilterInOut *inout, int 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;
- uint8_t *res = NULL;
- 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, &res);
- return res;
- }
- 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]->codecpar->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];
- if (ist->user_set_discard == AVDISCARD_ALL) {
- av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
- "matches a disabled input stream.\n", p, fg->graph_desc);
- exit_program(1);
- }
- } else {
- /* find the first unused stream of corresponding type */
- for (i = 0; i < nb_input_streams; i++) {
- ist = input_streams[i];
- if (ist->user_set_discard == AVDISCARD_ALL)
- continue;
- 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;
- fg->inputs[fg->nb_inputs - 1]->format = -1;
- fg->inputs[fg->nb_inputs - 1]->type = ist->st->codecpar->codec_type;
- fg->inputs[fg->nb_inputs - 1]->name = describe_filter_link(fg, in, 1);
- fg->inputs[fg->nb_inputs - 1]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
- if (!fg->inputs[fg->nb_inputs - 1]->frame_queue)
- exit_program(1);
- 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);
- graph->nb_threads = 1;
- 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);
- fg->outputs[fg->nb_outputs - 1]->name = describe_filter_link(fg, cur, 0);
- 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];
- AVFilterContext *last_filter = out->filter_ctx;
- int pad_idx = out->pad_idx;
- int ret;
- char name[255];
- snprintf(name, sizeof(name), "out_%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 ((ofilter->width || ofilter->height) && ofilter->ost->autoscale) {
- char args[255];
- AVFilterContext *filter;
- AVDictionaryEntry *e = NULL;
- snprintf(args, sizeof(args), "%d:%d",
- ofilter->width, ofilter->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_out_%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(ofilter))) {
- AVFilterContext *filter;
- snprintf(name, sizeof(name), "format_out_%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_out_%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_out_%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), "out_%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(ofilter);
- sample_rates = choose_sample_rates(ofilter);
- channel_layouts = choose_channel_layouts(ofilter);
- 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), "format_out_%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 (ost->apad && of->shortest) {
- char args[256];
- int i;
- for (i=0; i<of->ctx->nb_streams; i++)
- if (of->ctx->streams[i]->codecpar->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_filter(FilterGraph *fg, OutputFilter *ofilter,
- AVFilterInOut *out)
- {
- if (!ofilter->ost) {
- av_log(NULL, AV_LOG_FATAL, "Filter %s has an 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);
- }
- }
- void check_filter_outputs(void)
- {
- int i;
- for (i = 0; i < nb_filtergraphs; i++) {
- int n;
- for (n = 0; n < filtergraphs[i]->nb_outputs; n++) {
- OutputFilter *output = filtergraphs[i]->outputs[n];
- if (!output->ost) {
- av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", output->name);
- exit_program(1);
- }
- }
- }
- }
- static int sub2video_prepare(InputStream *ist, InputFilter *ifilter)
- {
- 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 codecpar has set a size, use it. Otherwise use the
- maximum dimensions of the video streams in the same file. */
- w = ifilter->width;
- h = ifilter->height;
- if (!(w && h)) {
- for (i = 0; i < avf->nb_streams; i++) {
- if (avf->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
- w = FFMAX(w, avf->streams[i]->codecpar->width);
- h = FFMAX(h, avf->streams[i]->codecpar->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 = ifilter->width = w;
- ist->sub2video.h = ifilter->height = h;
- ifilter->width = ist->dec_ctx->width ? ist->dec_ctx->width : ist->sub2video.w;
- ifilter->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
- /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the
- palettes for all rectangles are identical or compatible */
- ifilter->format = AV_PIX_FMT_RGB32;
- ist->sub2video.frame = av_frame_alloc();
- if (!ist->sub2video.frame)
- return AVERROR(ENOMEM);
- ist->sub2video.last_pts = INT64_MIN;
- ist->sub2video.end_pts = INT64_MIN;
- /* sub2video structure has been (re-)initialized.
- Mark it as such so that the system will be
- initialized with the first received heartbeat. */
- ist->sub2video.initialize = 1;
- 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;
- AVBufferSrcParameters *par = av_buffersrc_parameters_alloc();
- if (!par)
- return AVERROR(ENOMEM);
- memset(par, 0, sizeof(*par));
- par->format = AV_PIX_FMT_NONE;
- if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
- av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n");
- ret = AVERROR(EINVAL);
- goto fail;
- }
- 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, ifilter);
- if (ret < 0)
- goto fail;
- }
- sar = ifilter->sample_aspect_ratio;
- if(!sar.den)
- sar = (AVRational){0,1};
- av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
- av_bprintf(&args,
- "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
- "pixel_aspect=%d/%d",
- ifilter->width, ifilter->height, ifilter->format,
- tb.num, tb.den, sar.num, sar.den);
- 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)
- goto fail;
- par->hw_frames_ctx = ifilter->hw_frames_ctx;
- ret = av_buffersrc_parameters_set(ifilter->filter, par);
- if (ret < 0)
- goto fail;
- av_freep(&par);
- 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 (do_deinterlace) {
- AVFilterContext *yadif;
- snprintf(name, sizeof(name), "deinterlace_in_%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_in_%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;
- fail:
- av_freep(&par);
- return ret;
- }
- 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, ifilter->sample_rate,
- ifilter->sample_rate,
- av_get_sample_fmt_name(ifilter->format));
- if (ifilter->channel_layout)
- av_bprintf(&args, ":channel_layout=0x%"PRIx64,
- ifilter->channel_layout);
- else
- av_bprintf(&args, ":channels=%d", ifilter->channels);
- snprintf(name, sizeof(name), "graph_%d_in_%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_in_%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)
- {
- 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);
- }
- }
- static void cleanup_filtergraph(FilterGraph *fg)
- {
- int i;
- for (i = 0; i < fg->nb_outputs; i++)
- fg->outputs[i]->filter = (AVFilterContext *)NULL;
- for (i = 0; i < fg->nb_inputs; i++)
- fg->inputs[i]->filter = (AVFilterContext *)NULL;
- avfilter_graph_free(&fg->graph);
- }
- int configure_filtergraph(FilterGraph *fg)
- {
- AVFilterInOut *inputs, *outputs, *cur;
- int ret, i, simple = filtergraph_is_simple(fg);
- const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
- fg->graph_desc;
- cleanup_filtergraph(fg);
- if (!(fg->graph = avfilter_graph_alloc()))
- return AVERROR(ENOMEM);
- if (simple) {
- OutputStream *ost = fg->outputs[0]->ost;
- char args[512];
- AVDictionaryEntry *e = NULL;
- fg->graph->nb_threads = filter_nbthreads;
- 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';
- e = av_dict_get(ost->encoder_opts, "threads", NULL, 0);
- if (e)
- av_opt_set(fg->graph, "threads", e->value, 0);
- } else {
- fg->graph->nb_threads = filter_complex_nbthreads;
- }
- if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
- goto fail;
- ret = hw_device_setup_for_filter(fg);
- if (ret < 0)
- goto fail;
- 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);
- ret = AVERROR(EINVAL);
- goto fail;
- }
- 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);
- goto fail;
- }
- 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 (!auto_conversion_filters)
- avfilter_graph_set_auto_convert(fg->graph, AVFILTER_AUTO_CONVERT_NONE);
- if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
- goto fail;
- /* limit the lists of allowed formats to the ones selected, to
- * make sure they stay the same if the filtergraph is reconfigured later */
- for (i = 0; i < fg->nb_outputs; i++) {
- OutputFilter *ofilter = fg->outputs[i];
- AVFilterContext *sink = ofilter->filter;
- ofilter->format = av_buffersink_get_format(sink);
- ofilter->width = av_buffersink_get_w(sink);
- ofilter->height = av_buffersink_get_h(sink);
- ofilter->sample_rate = av_buffersink_get_sample_rate(sink);
- ofilter->channel_layout = av_buffersink_get_channel_layout(sink);
- }
- 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->codecpar->codec_id), ost->file_index, ost->index);
- ret = AVERROR(EINVAL);
- goto fail;
- }
- 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);
- }
- for (i = 0; i < fg->nb_inputs; i++) {
- while (av_fifo_size(fg->inputs[i]->frame_queue)) {
- AVFrame *tmp;
- av_fifo_generic_read(fg->inputs[i]->frame_queue, &tmp, sizeof(tmp), NULL);
- ret = av_buffersrc_add_frame(fg->inputs[i]->filter, tmp);
- av_frame_free(&tmp);
- if (ret < 0)
- goto fail;
- }
- }
- /* send the EOFs for the finished inputs */
- for (i = 0; i < fg->nb_inputs; i++) {
- if (fg->inputs[i]->eof) {
- ret = av_buffersrc_add_frame(fg->inputs[i]->filter, NULL);
- if (ret < 0)
- goto fail;
- }
- }
- /* process queued up subtitle packets */
- for (i = 0; i < fg->nb_inputs; i++) {
- InputStream *ist = fg->inputs[i]->ist;
- if (ist->sub2video.sub_queue && ist->sub2video.frame) {
- while (av_fifo_size(ist->sub2video.sub_queue)) {
- AVSubtitle tmp;
- av_fifo_generic_read(ist->sub2video.sub_queue, &tmp, sizeof(tmp), NULL);
- sub2video_update(ist, INT64_MIN, &tmp);
- avsubtitle_free(&tmp);
- }
- }
- }
- return 0;
- fail:
- cleanup_filtergraph(fg);
- return ret;
- }
- int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
- {
- av_buffer_unref(&ifilter->hw_frames_ctx);
- ifilter->format = frame->format;
- ifilter->width = frame->width;
- ifilter->height = frame->height;
- ifilter->sample_aspect_ratio = frame->sample_aspect_ratio;
- ifilter->sample_rate = frame->sample_rate;
- ifilter->channels = frame->channels;
- ifilter->channel_layout = frame->channel_layout;
- if (frame->hw_frames_ctx) {
- ifilter->hw_frames_ctx = av_buffer_ref(frame->hw_frames_ctx);
- if (!ifilter->hw_frames_ctx)
- return AVERROR(ENOMEM);
- }
- return 0;
- }
- int filtergraph_is_simple(FilterGraph *fg)
- {
- return !fg->graph_desc;
- }
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