mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-08-14 21:35:06 +02:00
1075 lines
41 KiB
C
1075 lines
41 KiB
C
/*
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* ffmpeg filter configuration
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "ffmpeg.h"
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#include "libavfilter/avfilter.h"
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#include "libavfilter/buffersink.h"
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#include "libavresample/avresample.h"
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#include "libavutil/avassert.h"
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#include "libavutil/avstring.h"
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#include "libavutil/bprint.h"
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#include "libavutil/channel_layout.h"
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#include "libavutil/display.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/pixfmt.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/samplefmt.h"
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enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, AVCodec *codec, enum AVPixelFormat target)
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{
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if (codec && codec->pix_fmts) {
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const enum AVPixelFormat *p = codec->pix_fmts;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
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int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
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enum AVPixelFormat best= AV_PIX_FMT_NONE;
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static const enum AVPixelFormat mjpeg_formats[] =
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{ AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE };
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static const enum AVPixelFormat ljpeg_formats[] =
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{ AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE };
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if (enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
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if (enc_ctx->codec_id == AV_CODEC_ID_MJPEG) {
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p = mjpeg_formats;
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} else if (enc_ctx->codec_id == AV_CODEC_ID_LJPEG) {
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p =ljpeg_formats;
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}
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}
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for (; *p != AV_PIX_FMT_NONE; p++) {
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best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
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if (*p == target)
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break;
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}
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if (*p == AV_PIX_FMT_NONE) {
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if (target != AV_PIX_FMT_NONE)
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av_log(NULL, AV_LOG_WARNING,
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"Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
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av_get_pix_fmt_name(target),
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codec->name,
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av_get_pix_fmt_name(best));
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return best;
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}
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}
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return target;
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}
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void choose_sample_fmt(AVStream *st, AVCodec *codec)
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{
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if (codec && codec->sample_fmts) {
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const enum AVSampleFormat *p = codec->sample_fmts;
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for (; *p != -1; p++) {
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if (*p == st->codec->sample_fmt)
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break;
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}
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if (*p == -1) {
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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]))
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av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
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if(av_get_sample_fmt_name(st->codec->sample_fmt))
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av_log(NULL, AV_LOG_WARNING,
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"Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
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av_get_sample_fmt_name(st->codec->sample_fmt),
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codec->name,
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av_get_sample_fmt_name(codec->sample_fmts[0]));
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st->codec->sample_fmt = codec->sample_fmts[0];
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}
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}
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}
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static char *choose_pix_fmts(OutputStream *ost)
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{
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AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0);
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if (strict_dict)
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// used by choose_pixel_fmt() and below
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av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0);
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if (ost->keep_pix_fmt) {
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if (ost->filter)
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avfilter_graph_set_auto_convert(ost->filter->graph->graph,
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AVFILTER_AUTO_CONVERT_NONE);
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if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE)
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return NULL;
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return av_strdup(av_get_pix_fmt_name(ost->enc_ctx->pix_fmt));
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}
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if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) {
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return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt)));
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} else if (ost->enc && ost->enc->pix_fmts) {
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const enum AVPixelFormat *p;
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AVIOContext *s = NULL;
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uint8_t *ret;
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int len;
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if (avio_open_dyn_buf(&s) < 0)
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exit_program(1);
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p = ost->enc->pix_fmts;
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if (ost->enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
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if (ost->enc_ctx->codec_id == AV_CODEC_ID_MJPEG) {
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p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_NONE };
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} else if (ost->enc_ctx->codec_id == AV_CODEC_ID_LJPEG) {
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p = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_BGRA, AV_PIX_FMT_NONE };
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}
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}
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for (; *p != AV_PIX_FMT_NONE; p++) {
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const char *name = av_get_pix_fmt_name(*p);
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avio_printf(s, "%s|", name);
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}
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len = avio_close_dyn_buf(s, &ret);
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ret[len - 1] = 0;
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return ret;
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} else
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return NULL;
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}
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/* Define a function for building a string containing a list of
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* allowed formats. */
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#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name) \
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static char *choose_ ## var ## s(OutputStream *ost) \
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{ \
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if (ost->enc_ctx->var != none) { \
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get_name(ost->enc_ctx->var); \
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return av_strdup(name); \
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} else if (ost->enc && ost->enc->supported_list) { \
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const type *p; \
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AVIOContext *s = NULL; \
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uint8_t *ret; \
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int len; \
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\
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if (avio_open_dyn_buf(&s) < 0) \
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exit_program(1); \
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\
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for (p = ost->enc->supported_list; *p != none; p++) { \
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get_name(*p); \
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avio_printf(s, "%s|", name); \
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} \
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len = avio_close_dyn_buf(s, &ret); \
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ret[len - 1] = 0; \
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return ret; \
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} else \
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return NULL; \
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}
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// DEF_CHOOSE_FORMAT(enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE,
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// GET_PIX_FMT_NAME)
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DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
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AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
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DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
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GET_SAMPLE_RATE_NAME)
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DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
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GET_CH_LAYOUT_NAME)
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FilterGraph *init_simple_filtergraph(InputStream *ist, OutputStream *ost)
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{
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FilterGraph *fg = av_mallocz(sizeof(*fg));
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if (!fg)
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exit_program(1);
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fg->index = nb_filtergraphs;
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GROW_ARRAY(fg->outputs, fg->nb_outputs);
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if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
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exit_program(1);
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fg->outputs[0]->ost = ost;
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fg->outputs[0]->graph = fg;
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ost->filter = fg->outputs[0];
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GROW_ARRAY(fg->inputs, fg->nb_inputs);
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if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
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exit_program(1);
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fg->inputs[0]->ist = ist;
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fg->inputs[0]->graph = fg;
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GROW_ARRAY(ist->filters, ist->nb_filters);
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ist->filters[ist->nb_filters - 1] = fg->inputs[0];
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GROW_ARRAY(filtergraphs, nb_filtergraphs);
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filtergraphs[nb_filtergraphs - 1] = fg;
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return fg;
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}
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static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
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{
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InputStream *ist = NULL;
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enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
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int i;
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// TODO: support other filter types
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if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
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av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
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"currently.\n");
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exit_program(1);
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}
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if (in->name) {
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AVFormatContext *s;
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AVStream *st = NULL;
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char *p;
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int file_idx = strtol(in->name, &p, 0);
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if (file_idx < 0 || file_idx >= nb_input_files) {
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av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
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file_idx, fg->graph_desc);
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exit_program(1);
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}
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s = input_files[file_idx]->ctx;
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for (i = 0; i < s->nb_streams; i++) {
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enum AVMediaType stream_type = s->streams[i]->codec->codec_type;
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if (stream_type != type &&
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!(stream_type == AVMEDIA_TYPE_SUBTITLE &&
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type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
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continue;
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if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
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st = s->streams[i];
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break;
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}
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}
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if (!st) {
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av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
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"matches no streams.\n", p, fg->graph_desc);
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exit_program(1);
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}
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ist = input_streams[input_files[file_idx]->ist_index + st->index];
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} else {
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/* find the first unused stream of corresponding type */
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for (i = 0; i < nb_input_streams; i++) {
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ist = input_streams[i];
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if (ist->dec_ctx->codec_type == type && ist->discard)
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break;
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}
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if (i == nb_input_streams) {
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av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
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"unlabeled input pad %d on filter %s\n", in->pad_idx,
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in->filter_ctx->name);
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exit_program(1);
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}
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}
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av_assert0(ist);
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ist->discard = 0;
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ist->decoding_needed |= DECODING_FOR_FILTER;
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ist->st->discard = AVDISCARD_NONE;
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GROW_ARRAY(fg->inputs, fg->nb_inputs);
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if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
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exit_program(1);
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fg->inputs[fg->nb_inputs - 1]->ist = ist;
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fg->inputs[fg->nb_inputs - 1]->graph = fg;
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GROW_ARRAY(ist->filters, ist->nb_filters);
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ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
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}
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int init_complex_filtergraph(FilterGraph *fg)
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{
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AVFilterInOut *inputs, *outputs, *cur;
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AVFilterGraph *graph;
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int ret = 0;
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/* this graph is only used for determining the kinds of inputs
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* and outputs we have, and is discarded on exit from this function */
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graph = avfilter_graph_alloc();
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if (!graph)
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return AVERROR(ENOMEM);
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ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
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if (ret < 0)
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goto fail;
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for (cur = inputs; cur; cur = cur->next)
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init_input_filter(fg, cur);
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for (cur = outputs; cur;) {
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GROW_ARRAY(fg->outputs, fg->nb_outputs);
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fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
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if (!fg->outputs[fg->nb_outputs - 1])
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exit_program(1);
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fg->outputs[fg->nb_outputs - 1]->graph = fg;
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fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
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fg->outputs[fg->nb_outputs - 1]->type = avfilter_pad_get_type(cur->filter_ctx->output_pads,
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cur->pad_idx);
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cur = cur->next;
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fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
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}
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fail:
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avfilter_inout_free(&inputs);
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avfilter_graph_free(&graph);
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return ret;
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}
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static int insert_trim(int64_t start_time, int64_t duration,
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AVFilterContext **last_filter, int *pad_idx,
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const char *filter_name)
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{
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AVFilterGraph *graph = (*last_filter)->graph;
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AVFilterContext *ctx;
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const AVFilter *trim;
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enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
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const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
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int ret = 0;
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if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
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return 0;
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trim = avfilter_get_by_name(name);
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if (!trim) {
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av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
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"recording time.\n", name);
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return AVERROR_FILTER_NOT_FOUND;
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}
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ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
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if (!ctx)
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return AVERROR(ENOMEM);
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if (duration != INT64_MAX) {
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ret = av_opt_set_int(ctx, "durationi", duration,
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AV_OPT_SEARCH_CHILDREN);
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}
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if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
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ret = av_opt_set_int(ctx, "starti", start_time,
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AV_OPT_SEARCH_CHILDREN);
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}
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if (ret < 0) {
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av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
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return ret;
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}
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ret = avfilter_init_str(ctx, NULL);
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if (ret < 0)
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return ret;
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|
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ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
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if (ret < 0)
|
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return ret;
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*last_filter = ctx;
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*pad_idx = 0;
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return 0;
|
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}
|
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|
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static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
|
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const char *filter_name, const char *args)
|
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{
|
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AVFilterGraph *graph = (*last_filter)->graph;
|
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AVFilterContext *ctx;
|
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int ret;
|
|
|
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ret = avfilter_graph_create_filter(&ctx,
|
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avfilter_get_by_name(filter_name),
|
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filter_name, args, NULL, graph);
|
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if (ret < 0)
|
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return ret;
|
|
|
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ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
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if (ret < 0)
|
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return ret;
|
|
|
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*last_filter = ctx;
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*pad_idx = 0;
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return 0;
|
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}
|
|
|
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static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
|
|
{
|
|
char *pix_fmts;
|
|
OutputStream *ost = ofilter->ost;
|
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OutputFile *of = output_files[ost->file_index];
|
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AVCodecContext *codec = ost->enc_ctx;
|
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AVFilterContext *last_filter = out->filter_ctx;
|
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int pad_idx = out->pad_idx;
|
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int ret;
|
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char name[255];
|
|
|
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snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
|
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ret = avfilter_graph_create_filter(&ofilter->filter,
|
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avfilter_get_by_name("buffersink"),
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name, NULL, NULL, fg->graph);
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|
|
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if (ret < 0)
|
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return ret;
|
|
|
|
if (codec->width || codec->height) {
|
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char args[255];
|
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AVFilterContext *filter;
|
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AVDictionaryEntry *e = NULL;
|
|
|
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snprintf(args, sizeof(args), "%d:%d",
|
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codec->width,
|
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codec->height);
|
|
|
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while ((e = av_dict_get(ost->sws_dict, "", e,
|
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AV_DICT_IGNORE_SUFFIX))) {
|
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av_strlcatf(args, sizeof(args), ":%s=%s", e->key, e->value);
|
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}
|
|
|
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snprintf(name, sizeof(name), "scaler for output stream %d:%d",
|
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ost->file_index, ost->index);
|
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if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
|
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name, args, NULL, fg->graph)) < 0)
|
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return ret;
|
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if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
|
|
return ret;
|
|
|
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last_filter = filter;
|
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pad_idx = 0;
|
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}
|
|
|
|
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 &&
|
|
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;
|
|
}
|
|
|