2003-01-11 05:58:36 +01:00
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/*
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* YUV4MPEG format
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* Copyright (c) 2001, 2002, 2003 Fabrice Bellard.
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*
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* This library 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 of the License, or (at your option) any later version.
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*
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* This library 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 this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "avformat.h"
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#define Y4M_MAGIC "YUV4MPEG2"
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#define Y4M_FRAME_MAGIC "FRAME"
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#define Y4M_LINE_MAX 256
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2003-10-14 06:15:53 +02:00
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#ifdef CONFIG_ENCODERS
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2003-10-18 05:19:44 +02:00
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static int yuv4_generate_header(AVFormatContext *s, char* buf)
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2003-01-11 05:58:36 +01:00
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{
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AVStream *st;
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int width, height;
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2003-10-20 22:23:46 +02:00
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int raten, rated, aspectn, aspectd, n;
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2003-10-18 05:19:44 +02:00
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char inter;
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2005-01-04 02:55:50 +01:00
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char *colorspace = "";
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2003-01-11 05:58:36 +01:00
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st = s->streams[0];
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width = st->codec.width;
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height = st->codec.height;
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2003-03-12 16:16:19 +01:00
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av_reduce(&raten, &rated, st->codec.frame_rate, st->codec.frame_rate_base, (1UL<<31)-1);
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2003-10-18 05:19:44 +02:00
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2003-10-20 22:23:46 +02:00
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aspectn = st->codec.sample_aspect_ratio.num;
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aspectd = st->codec.sample_aspect_ratio.den;
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2003-01-11 05:58:36 +01:00
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2005-01-04 02:55:50 +01:00
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if ( aspectn == 0 && aspectd == 1 ) aspectd = 0; // 0:0 means unknown
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2003-10-18 05:19:44 +02:00
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inter = 'p'; /* progressive is the default */
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if (st->codec.coded_frame && st->codec.coded_frame->interlaced_frame) {
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2003-10-20 12:33:13 +02:00
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inter = st->codec.coded_frame->top_field_first ? 't' : 'b';
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2003-10-18 05:19:44 +02:00
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}
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2003-01-11 05:58:36 +01:00
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2005-01-04 02:55:50 +01:00
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switch(st->codec.pix_fmt) {
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case PIX_FMT_YUV411P:
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colorspace = " C411 XYSCSS=411";
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break;
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case PIX_FMT_YUV420P:
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colorspace = (st->codec.codec_id == CODEC_ID_DVVIDEO)?" C420paldv XYSCSS=420PALDV":" C420mpeg2 XYSCSS=420MPEG2";
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break;
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case PIX_FMT_YUV422P:
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colorspace = " C422 XYSCSS=422";
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break;
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case PIX_FMT_YUV444P:
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colorspace = " C444 XYSCSS=444";
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break;
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}
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2003-01-11 05:58:36 +01:00
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/* construct stream header, if this is the first frame */
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2003-10-18 05:19:44 +02:00
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n = snprintf(buf, Y4M_LINE_MAX, "%s W%d H%d F%d:%d I%c A%d:%d%s\n",
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2003-01-11 05:58:36 +01:00
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Y4M_MAGIC,
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width,
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height,
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raten, rated,
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2003-10-18 05:19:44 +02:00
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inter,
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aspectn, aspectd,
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2005-01-04 02:55:50 +01:00
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colorspace);
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2003-10-18 05:19:44 +02:00
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return n;
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2003-01-11 05:58:36 +01:00
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}
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2004-05-29 04:06:32 +02:00
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static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt)
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2003-01-11 05:58:36 +01:00
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{
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2004-05-29 04:06:32 +02:00
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AVStream *st = s->streams[pkt->stream_index];
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2003-01-11 05:58:36 +01:00
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ByteIOContext *pb = &s->pb;
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AVPicture *picture;
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2003-10-18 05:19:44 +02:00
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int* first_pkt = s->priv_data;
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2005-01-04 02:55:50 +01:00
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int width, height, h_chroma_shift, v_chroma_shift;
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2003-01-11 05:58:36 +01:00
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int i, m;
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2003-10-18 05:19:44 +02:00
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char buf2[Y4M_LINE_MAX+1];
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2003-01-11 05:58:36 +01:00
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char buf1[20];
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2003-02-11 17:35:48 +01:00
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uint8_t *ptr, *ptr1, *ptr2;
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2003-01-11 05:58:36 +01:00
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2004-05-29 04:06:32 +02:00
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picture = (AVPicture *)pkt->data;
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2003-01-11 05:58:36 +01:00
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2003-10-18 05:19:44 +02:00
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/* for the first packet we have to output the header as well */
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if (*first_pkt) {
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*first_pkt = 0;
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if (yuv4_generate_header(s, buf2) < 0) {
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2004-03-03 16:41:21 +01:00
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av_log(s, AV_LOG_ERROR, "Error. YUV4MPEG stream header write failed.\n");
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2004-06-19 05:59:34 +02:00
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return AVERROR_IO;
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2003-10-18 05:19:44 +02:00
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} else {
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put_buffer(pb, buf2, strlen(buf2));
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}
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}
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2003-01-11 05:58:36 +01:00
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/* construct frame header */
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2003-10-18 05:19:44 +02:00
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2003-09-25 10:38:16 +02:00
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m = snprintf(buf1, sizeof(buf1), "%s\n", Y4M_FRAME_MAGIC);
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2003-01-11 05:58:36 +01:00
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put_buffer(pb, buf1, strlen(buf1));
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width = st->codec.width;
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height = st->codec.height;
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ptr = picture->data[0];
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for(i=0;i<height;i++) {
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put_buffer(pb, ptr, width);
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ptr += picture->linesize[0];
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}
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2005-01-04 02:55:50 +01:00
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// Adjust for smaller Cb and Cr planes
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avcodec_get_chroma_sub_sample(st->codec.pix_fmt, &h_chroma_shift, &v_chroma_shift);
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width >>= h_chroma_shift;
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height >>= v_chroma_shift;
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2003-01-11 05:58:36 +01:00
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ptr1 = picture->data[1];
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ptr2 = picture->data[2];
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for(i=0;i<height;i++) { /* Cb */
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put_buffer(pb, ptr1, width);
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ptr1 += picture->linesize[1];
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}
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for(i=0;i<height;i++) { /* Cr */
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put_buffer(pb, ptr2, width);
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ptr2 += picture->linesize[2];
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}
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put_flush_packet(pb);
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return 0;
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}
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2003-10-18 05:19:44 +02:00
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static int yuv4_write_header(AVFormatContext *s)
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{
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int* first_pkt = s->priv_data;
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if (s->nb_streams != 1)
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2004-06-19 05:59:34 +02:00
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return AVERROR_IO;
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2003-10-18 05:19:44 +02:00
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if (s->streams[0]->codec.pix_fmt == PIX_FMT_YUV411P) {
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2005-01-04 02:55:50 +01:00
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av_log(s, AV_LOG_ERROR, "Warning: generating rarely used 4:1:1 YUV stream, some mjpegtools might not work.\n");
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2003-10-18 05:19:44 +02:00
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}
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2005-01-04 02:55:50 +01:00
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else if ((s->streams[0]->codec.pix_fmt != PIX_FMT_YUV420P) &&
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(s->streams[0]->codec.pix_fmt != PIX_FMT_YUV422P) &&
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(s->streams[0]->codec.pix_fmt != PIX_FMT_YUV444P)) {
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av_log(s, AV_LOG_ERROR, "ERROR: yuv4mpeg only handles 4:4:4, 4:2:2, 4:2:0 and 4:1:1 planar YUV data. Use -pix_fmt to select one.\n");
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2004-06-19 05:59:34 +02:00
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return AVERROR_IO;
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2003-10-18 05:19:44 +02:00
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}
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*first_pkt = 1;
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return 0;
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}
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2003-01-11 05:58:36 +01:00
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static int yuv4_write_trailer(AVFormatContext *s)
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{
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return 0;
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}
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AVOutputFormat yuv4mpegpipe_oformat = {
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"yuv4mpegpipe",
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"YUV4MPEG pipe format",
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"",
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"yuv4mpeg",
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2003-10-18 05:19:44 +02:00
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sizeof(int),
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2003-01-11 05:58:36 +01:00
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CODEC_ID_NONE,
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CODEC_ID_RAWVIDEO,
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yuv4_write_header,
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yuv4_write_packet,
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yuv4_write_trailer,
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.flags = AVFMT_RAWPICTURE,
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};
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2003-10-14 06:15:53 +02:00
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#endif //CONFIG_ENCODERS
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2003-01-11 05:58:36 +01:00
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2003-08-29 22:51:10 +02:00
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/* Header size increased to allow room for optional flags */
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#define MAX_YUV4_HEADER 80
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2005-01-04 02:55:50 +01:00
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#define MAX_FRAME_HEADER 80
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2003-08-05 11:32:31 +02:00
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static int yuv4_read_header(AVFormatContext *s, AVFormatParameters *ap)
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{
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2005-01-04 02:55:50 +01:00
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char header[MAX_YUV4_HEADER+10]; // Include headroom for the longest option
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char *tokstart,*tokend,*header_end;
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2003-08-05 11:32:31 +02:00
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int i;
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ByteIOContext *pb = &s->pb;
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2005-01-04 02:55:50 +01:00
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int width=-1, height=-1, raten=0, rated=0, aspectn=0, aspectd=0,interlaced_frame=0,top_field_first=0;
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enum PixelFormat pix_fmt=PIX_FMT_NB,alt_pix_fmt=PIX_FMT_NB;
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2003-08-05 11:32:31 +02:00
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AVStream *st;
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for (i=0; i<MAX_YUV4_HEADER; i++) {
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header[i] = get_byte(pb);
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if (header[i] == '\n') {
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2005-01-04 02:55:50 +01:00
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header[i+1] = 0x20; // Add a space after last option. Makes parsing "444" vs "444alpha" easier.
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header[i+2] = 0;
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2003-08-05 11:32:31 +02:00
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break;
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}
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}
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if (i == MAX_YUV4_HEADER) return -1;
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if (strncmp(header, Y4M_MAGIC, strlen(Y4M_MAGIC))) return -1;
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2005-01-04 02:55:50 +01:00
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header_end = &header[i+1]; // Include space
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for(tokstart = &header[strlen(Y4M_MAGIC) + 1]; tokstart < header_end; tokstart++) {
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if (*tokstart==0x20) continue;
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switch (*tokstart++) {
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case 'W': // Width. Required.
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width = strtol(tokstart, &tokend, 10);
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tokstart=tokend;
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break;
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case 'H': // Height. Required.
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height = strtol(tokstart, &tokend, 10);
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tokstart=tokend;
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break;
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case 'C': // Color space
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if (strncmp("420jpeg",tokstart,7)==0)
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pix_fmt = PIX_FMT_YUV420P;
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else if (strncmp("420mpeg2",tokstart,8)==0)
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pix_fmt = PIX_FMT_YUV420P;
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else if (strncmp("420paldv", tokstart, 8)==0)
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pix_fmt = PIX_FMT_YUV420P;
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else if (strncmp("411", tokstart, 3)==0)
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pix_fmt = PIX_FMT_YUV411P;
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else if (strncmp("422", tokstart, 3)==0)
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pix_fmt = PIX_FMT_YUV422P;
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else if (strncmp("444alpha", tokstart, 8)==0) {
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av_log(s, AV_LOG_ERROR, "Cannot handle 4:4:4:4 YUV4MPEG stream.\n");
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return -1;
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} else if (strncmp("444", tokstart, 3)==0)
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pix_fmt = PIX_FMT_YUV444P;
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else if (strncmp("mono",tokstart, 4)==0) {
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av_log(s, AV_LOG_ERROR, "Cannot handle luma only YUV4MPEG stream.\n");
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return -1;
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} else {
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av_log(s, AV_LOG_ERROR, "YUV4MPEG stream contains an unknown pixel format.\n");
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return -1;
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}
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while(tokstart<header_end&&*tokstart!=0x20) tokstart++;
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break;
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case 'I': // Interlace type
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switch (*tokstart++){
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case '?':
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break;
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case 'p':
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interlaced_frame=0;
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break;
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case 't':
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interlaced_frame=1;
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top_field_first=1;
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break;
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case 'b':
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interlaced_frame=1;
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top_field_first=0;
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break;
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case 'm':
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av_log(s, AV_LOG_ERROR, "YUV4MPEG stream contains mixed interlaced and non-interlaced frames.\n");
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return -1;
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default:
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av_log(s, AV_LOG_ERROR, "YUV4MPEG has invalid header.\n");
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return -1;
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}
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break;
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case 'F': // Frame rate
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sscanf(tokstart,"%d:%d",&raten,&rated); // 0:0 if unknown
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while(tokstart<header_end&&*tokstart!=0x20) tokstart++;
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break;
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case 'A': // Pixel aspect
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sscanf(tokstart,"%d:%d",&aspectn,&aspectd); // 0:0 if unknown
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while(tokstart<header_end&&*tokstart!=0x20) tokstart++;
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break;
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case 'X': // Vendor extensions
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if (strncmp("YSCSS=",tokstart,6)==0) {
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// Older nonstandard pixel format representation
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tokstart+=6;
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if (strncmp("420JPEG",tokstart,7)==0)
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alt_pix_fmt=PIX_FMT_YUV420P;
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else if (strncmp("420MPEG2",tokstart,8)==0)
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alt_pix_fmt=PIX_FMT_YUV420P;
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else if (strncmp("420PALDV",tokstart,8)==0)
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alt_pix_fmt=PIX_FMT_YUV420P;
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else if (strncmp("411",tokstart,3)==0)
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alt_pix_fmt=PIX_FMT_YUV411P;
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else if (strncmp("422",tokstart,3)==0)
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alt_pix_fmt=PIX_FMT_YUV422P;
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else if (strncmp("444",tokstart,3)==0)
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alt_pix_fmt=PIX_FMT_YUV444P;
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}
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while(tokstart<header_end&&*tokstart!=0x20) tokstart++;
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break;
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}
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}
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if ((width == -1) || (height == -1)) {
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av_log(s, AV_LOG_ERROR, "YUV4MPEG has invalid header.\n");
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|
return -1;
|
|
|
|
}
|
2003-08-05 11:32:31 +02:00
|
|
|
|
2005-01-04 02:55:50 +01:00
|
|
|
if (pix_fmt == PIX_FMT_NB) {
|
|
|
|
if (alt_pix_fmt == PIX_FMT_NB)
|
|
|
|
pix_fmt = PIX_FMT_YUV420P;
|
|
|
|
else
|
|
|
|
pix_fmt = alt_pix_fmt;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (raten == 0 && rated == 0) {
|
|
|
|
// Frame rate unknown
|
|
|
|
raten = 25;
|
|
|
|
rated = 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (aspectn == 0 && aspectd == 0) {
|
|
|
|
// Pixel aspect unknown
|
|
|
|
aspectd = 1;
|
|
|
|
}
|
|
|
|
|
2003-08-05 11:32:31 +02:00
|
|
|
st = av_new_stream(s, 0);
|
|
|
|
st = s->streams[0];
|
|
|
|
st->codec.width = width;
|
|
|
|
st->codec.height = height;
|
|
|
|
av_reduce(&raten, &rated, raten, rated, (1UL<<31)-1);
|
|
|
|
st->codec.frame_rate = raten;
|
|
|
|
st->codec.frame_rate_base = rated;
|
2005-01-04 02:55:50 +01:00
|
|
|
st->codec.pix_fmt = pix_fmt;
|
2003-08-05 11:32:31 +02:00
|
|
|
st->codec.codec_type = CODEC_TYPE_VIDEO;
|
|
|
|
st->codec.codec_id = CODEC_ID_RAWVIDEO;
|
2003-10-20 22:23:46 +02:00
|
|
|
st->codec.sample_aspect_ratio= (AVRational){aspectn, aspectd};
|
2003-08-05 11:32:31 +02:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int yuv4_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
char header[MAX_FRAME_HEADER+1];
|
|
|
|
int packet_size, ret, width, height;
|
|
|
|
AVStream *st = s->streams[0];
|
|
|
|
|
|
|
|
for (i=0; i<MAX_FRAME_HEADER; i++) {
|
|
|
|
header[i] = get_byte(&s->pb);
|
|
|
|
if (header[i] == '\n') {
|
|
|
|
header[i+1] = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (i == MAX_FRAME_HEADER) return -1;
|
|
|
|
if (strncmp(header, Y4M_FRAME_MAGIC, strlen(Y4M_FRAME_MAGIC))) return -1;
|
|
|
|
|
|
|
|
width = st->codec.width;
|
|
|
|
height = st->codec.height;
|
|
|
|
|
|
|
|
packet_size = avpicture_get_size(st->codec.pix_fmt, width, height);
|
|
|
|
if (packet_size < 0)
|
2004-10-01 15:16:16 +02:00
|
|
|
return -1;
|
2003-08-05 11:32:31 +02:00
|
|
|
|
|
|
|
if (av_new_packet(pkt, packet_size) < 0)
|
2004-06-19 05:59:34 +02:00
|
|
|
return AVERROR_IO;
|
2003-08-05 11:32:31 +02:00
|
|
|
|
|
|
|
pkt->stream_index = 0;
|
|
|
|
ret = get_buffer(&s->pb, pkt->data, pkt->size);
|
|
|
|
if (ret != pkt->size) {
|
|
|
|
av_free_packet(pkt);
|
2004-06-19 05:59:34 +02:00
|
|
|
return AVERROR_IO;
|
2003-08-05 11:32:31 +02:00
|
|
|
} else {
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static int yuv4_read_close(AVFormatContext *s)
|
|
|
|
{
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
AVInputFormat yuv4mpegpipe_iformat = {
|
|
|
|
"yuv4mpegpipe",
|
|
|
|
"YUV4MPEG pipe format",
|
|
|
|
0,
|
|
|
|
NULL,
|
|
|
|
yuv4_read_header,
|
|
|
|
yuv4_read_packet,
|
|
|
|
yuv4_read_close,
|
|
|
|
.extensions = "yuv4mpeg"
|
|
|
|
};
|
|
|
|
|
|
|
|
int yuv4mpeg_init(void)
|
|
|
|
{
|
|
|
|
av_register_input_format(&yuv4mpegpipe_iformat);
|
2003-10-14 06:15:53 +02:00
|
|
|
#ifdef CONFIG_ENCODERS
|
2003-08-05 11:32:31 +02:00
|
|
|
av_register_output_format(&yuv4mpegpipe_oformat);
|
2003-10-14 06:15:53 +02:00
|
|
|
#endif //CONFIG_ENCODERS
|
2003-08-05 11:32:31 +02:00
|
|
|
return 0;
|
|
|
|
}
|
2003-01-11 05:58:36 +01:00
|
|
|
|