mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
295 lines
9.2 KiB
C
295 lines
9.2 KiB
C
/*
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* YUV4MPEG muxer
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* Copyright (c) 2001, 2002, 2003 Fabrice Bellard
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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 "libavutil/pixdesc.h"
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#include "avformat.h"
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#include "internal.h"
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#include "yuv4mpeg.h"
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static int yuv4_write_header(AVFormatContext *s)
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{
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AVStream *st;
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AVIOContext *pb = s->pb;
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int width, height;
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int raten, rated, aspectn, aspectd, ret;
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char inter;
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const char *colorspace = "";
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const char *colorrange = "";
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int field_order;
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st = s->streams[0];
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width = st->codecpar->width;
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height = st->codecpar->height;
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field_order = st->codecpar->field_order;
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// TODO: should be avg_frame_rate
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av_reduce(&raten, &rated, st->time_base.den,
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st->time_base.num, (1UL << 31) - 1);
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aspectn = st->sample_aspect_ratio.num;
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aspectd = st->sample_aspect_ratio.den;
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if (aspectn == 0 && aspectd == 1)
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aspectd = 0; // 0:0 means unknown
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switch(st->codecpar->color_range) {
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case AVCOL_RANGE_MPEG:
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colorrange = " XCOLORRANGE=LIMITED";
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break;
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case AVCOL_RANGE_JPEG:
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colorrange = " XCOLORRANGE=FULL";
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break;
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default:
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break;
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}
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switch (field_order) {
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case AV_FIELD_TB:
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case AV_FIELD_TT: inter = 't'; break;
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case AV_FIELD_BT:
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case AV_FIELD_BB: inter = 'b'; break;
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default: inter = 'p'; break;
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}
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switch (st->codecpar->format) {
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case AV_PIX_FMT_GRAY8:
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colorspace = " Cmono";
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break;
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case AV_PIX_FMT_GRAY9:
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colorspace = " Cmono9";
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break;
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case AV_PIX_FMT_GRAY10:
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colorspace = " Cmono10";
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break;
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case AV_PIX_FMT_GRAY12:
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colorspace = " Cmono12";
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break;
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case AV_PIX_FMT_GRAY16:
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colorspace = " Cmono16";
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break;
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case AV_PIX_FMT_YUV411P:
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colorspace = " C411 XYSCSS=411";
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break;
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case AV_PIX_FMT_YUVJ420P:
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colorspace = " C420jpeg XYSCSS=420JPEG";
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colorrange = " XCOLORRANGE=FULL";
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break;
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case AV_PIX_FMT_YUVJ422P:
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colorspace = " C422 XYSCSS=422";
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colorrange = " XCOLORRANGE=FULL";
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break;
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case AV_PIX_FMT_YUVJ444P:
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colorspace = " C444 XYSCSS=444";
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colorrange = " XCOLORRANGE=FULL";
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break;
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case AV_PIX_FMT_YUV420P:
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switch (st->codecpar->chroma_location) {
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case AVCHROMA_LOC_TOPLEFT: colorspace = " C420paldv XYSCSS=420PALDV"; break;
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case AVCHROMA_LOC_LEFT: colorspace = " C420mpeg2 XYSCSS=420MPEG2"; break;
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default: colorspace = " C420jpeg XYSCSS=420JPEG"; break;
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}
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break;
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case AV_PIX_FMT_YUV422P:
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colorspace = " C422 XYSCSS=422";
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break;
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case AV_PIX_FMT_YUV444P:
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colorspace = " C444 XYSCSS=444";
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break;
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case AV_PIX_FMT_YUVA444P:
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colorspace = " C444alpha XYSCSS=444";
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break;
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case AV_PIX_FMT_YUV420P9:
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colorspace = " C420p9 XYSCSS=420P9";
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break;
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case AV_PIX_FMT_YUV422P9:
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colorspace = " C422p9 XYSCSS=422P9";
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break;
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case AV_PIX_FMT_YUV444P9:
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colorspace = " C444p9 XYSCSS=444P9";
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break;
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case AV_PIX_FMT_YUV420P10:
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colorspace = " C420p10 XYSCSS=420P10";
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break;
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case AV_PIX_FMT_YUV422P10:
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colorspace = " C422p10 XYSCSS=422P10";
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break;
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case AV_PIX_FMT_YUV444P10:
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colorspace = " C444p10 XYSCSS=444P10";
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break;
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case AV_PIX_FMT_YUV420P12:
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colorspace = " C420p12 XYSCSS=420P12";
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break;
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case AV_PIX_FMT_YUV422P12:
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colorspace = " C422p12 XYSCSS=422P12";
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break;
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case AV_PIX_FMT_YUV444P12:
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colorspace = " C444p12 XYSCSS=444P12";
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break;
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case AV_PIX_FMT_YUV420P14:
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colorspace = " C420p14 XYSCSS=420P14";
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break;
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case AV_PIX_FMT_YUV422P14:
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colorspace = " C422p14 XYSCSS=422P14";
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break;
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case AV_PIX_FMT_YUV444P14:
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colorspace = " C444p14 XYSCSS=444P14";
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break;
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case AV_PIX_FMT_YUV420P16:
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colorspace = " C420p16 XYSCSS=420P16";
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break;
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case AV_PIX_FMT_YUV422P16:
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colorspace = " C422p16 XYSCSS=422P16";
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break;
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case AV_PIX_FMT_YUV444P16:
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colorspace = " C444p16 XYSCSS=444P16";
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break;
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}
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ret = avio_printf(pb, Y4M_MAGIC " W%d H%d F%d:%d I%c A%d:%d%s%s\n",
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width, height, raten, rated, inter,
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aspectn, aspectd, colorspace, colorrange);
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if (ret < 0) {
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av_log(s, AV_LOG_ERROR,
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"Error. YUV4MPEG stream header write failed.\n");
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return ret;
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}
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return 0;
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}
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static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt)
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{
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AVStream *st = s->streams[pkt->stream_index];
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AVIOContext *pb = s->pb;
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const AVFrame *frame = (const AVFrame *)pkt->data;
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int width, height;
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const AVPixFmtDescriptor *desc;
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/* construct frame header */
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avio_printf(s->pb, Y4M_FRAME_MAGIC "\n");
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width = st->codecpar->width;
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height = st->codecpar->height;
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desc = av_pix_fmt_desc_get(st->codecpar->format);
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/* The following code presumes all planes to be non-interleaved. */
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for (int k = 0; k < desc->nb_components; k++) {
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int plane_height = height, plane_width = width * desc->comp[k].step;
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const uint8_t *ptr = frame->data[k];
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if (desc->nb_components >= 3 && (k == 1 || k == 2)) { /* chroma? */
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plane_width = AV_CEIL_RSHIFT(plane_width, desc->log2_chroma_w);
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plane_height = AV_CEIL_RSHIFT(plane_height, desc->log2_chroma_h);
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}
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for (int i = 0; i < plane_height; i++) {
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avio_write(pb, ptr, plane_width);
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ptr += frame->linesize[k];
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}
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}
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return 0;
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}
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static int yuv4_init(AVFormatContext *s)
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{
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if (s->nb_streams != 1)
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return AVERROR(EIO);
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if (s->streams[0]->codecpar->codec_id != AV_CODEC_ID_WRAPPED_AVFRAME) {
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av_log(s, AV_LOG_ERROR, "ERROR: Codec not supported.\n");
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return AVERROR_INVALIDDATA;
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}
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switch (s->streams[0]->codecpar->format) {
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case AV_PIX_FMT_YUV411P:
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av_log(s, AV_LOG_WARNING, "Warning: generating rarely used 4:1:1 YUV "
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"stream, some mjpegtools might not work.\n");
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break;
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case AV_PIX_FMT_GRAY8:
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case AV_PIX_FMT_YUV420P:
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case AV_PIX_FMT_YUV422P:
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case AV_PIX_FMT_YUV444P:
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// TODO: remove YUVJ pixel formats when they are completely removed from the codebase.
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case AV_PIX_FMT_YUVJ420P:
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case AV_PIX_FMT_YUVJ422P:
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case AV_PIX_FMT_YUVJ444P:
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break;
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case AV_PIX_FMT_GRAY9:
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case AV_PIX_FMT_GRAY10:
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case AV_PIX_FMT_GRAY12:
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case AV_PIX_FMT_GRAY16:
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case AV_PIX_FMT_YUV420P9:
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case AV_PIX_FMT_YUV422P9:
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case AV_PIX_FMT_YUV444P9:
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case AV_PIX_FMT_YUV420P10:
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case AV_PIX_FMT_YUV422P10:
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case AV_PIX_FMT_YUV444P10:
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case AV_PIX_FMT_YUV420P12:
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case AV_PIX_FMT_YUV422P12:
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case AV_PIX_FMT_YUV444P12:
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case AV_PIX_FMT_YUV420P14:
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case AV_PIX_FMT_YUV422P14:
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case AV_PIX_FMT_YUV444P14:
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case AV_PIX_FMT_YUV420P16:
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case AV_PIX_FMT_YUV422P16:
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case AV_PIX_FMT_YUV444P16:
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case AV_PIX_FMT_YUVA444P:
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if (s->strict_std_compliance >= FF_COMPLIANCE_NORMAL) {
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av_log(s, AV_LOG_ERROR, "'%s' is not an official yuv4mpegpipe pixel format. "
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"Use '-strict -1' to encode to this pixel format.\n",
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av_get_pix_fmt_name(s->streams[0]->codecpar->format));
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return AVERROR(EINVAL);
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}
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av_log(s, AV_LOG_WARNING, "Warning: generating non standard YUV stream. "
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"Mjpegtools will not work.\n");
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break;
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default:
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av_log(s, AV_LOG_ERROR, "ERROR: yuv4mpeg can only handle "
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"yuv444p, yuv422p, yuv420p, yuv411p and gray8 pixel formats. "
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"And using 'strict -1' also yuv444p9, yuv422p9, yuv420p9, "
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"yuv444p10, yuv422p10, yuv420p10, "
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"yuv444p12, yuv422p12, yuv420p12, "
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"yuv444p14, yuv422p14, yuv420p14, "
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"yuv444p16, yuv422p16, yuv420p16, "
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"yuva444p, "
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"gray9, gray10, gray12 "
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"and gray16 pixel formats. "
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"Use -pix_fmt to select one.\n");
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return AVERROR(EIO);
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}
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return 0;
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}
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const AVOutputFormat ff_yuv4mpegpipe_muxer = {
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.name = "yuv4mpegpipe",
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.long_name = NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"),
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.extensions = "y4m",
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.audio_codec = AV_CODEC_ID_NONE,
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.video_codec = AV_CODEC_ID_WRAPPED_AVFRAME,
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.init = yuv4_init,
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.write_header = yuv4_write_header,
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.write_packet = yuv4_write_packet,
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};
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