X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Fyuv4mpeg.c;h=f793a0e17093a7a4750cc66ecc25f9cee75626b3;hb=db9d39b4b5e5a3c20aeecf787ddeadd88f4906cf;hp=30fdc54db5dfe0d59e7cabd2ae5d6c47a4b75d43;hpb=bf4e3bd2d0263169ebf5d88972ae319ecb0d7a1e;p=ffmpeg diff --git a/libavformat/yuv4mpeg.c b/libavformat/yuv4mpeg.c index 30fdc54db5d..f793a0e1709 100644 --- a/libavformat/yuv4mpeg.c +++ b/libavformat/yuv4mpeg.c @@ -1,93 +1,102 @@ /* * YUV4MPEG format - * Copyright (c) 2001, 2002, 2003 Fabrice Bellard. + * Copyright (c) 2001, 2002, 2003 Fabrice Bellard * - * This library is free software; you can redistribute it and/or + * This file is part of Libav. + * + * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. + * version 2.1 of the License, or (at your option) any later version. * - * This library is distributed in the hope that it will be useful, + * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * License along with Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ + +#include "libavutil/pixdesc.h" #include "avformat.h" +#include "internal.h" #define Y4M_MAGIC "YUV4MPEG2" #define Y4M_FRAME_MAGIC "FRAME" #define Y4M_LINE_MAX 256 -#ifdef CONFIG_ENCODERS +struct frame_attributes { + int interlaced_frame; + int top_field_first; +}; +#if CONFIG_YUV4MPEGPIPE_MUXER static int yuv4_generate_header(AVFormatContext *s, char* buf) { AVStream *st; int width, height; int raten, rated, aspectn, aspectd, n; char inter; - char *colorspace = ""; + const char *colorspace = ""; - st = s->streams[0]; - width = st->codec->width; + st = s->streams[0]; + width = st->codec->width; height = st->codec->height; - av_reduce(&raten, &rated, st->codec->time_base.den, st->codec->time_base.num, (1UL<<31)-1); - - aspectn = st->codec->sample_aspect_ratio.num; - aspectd = st->codec->sample_aspect_ratio.den; - - if ( aspectn == 0 && aspectd == 1 ) aspectd = 0; // 0:0 means unknown + av_reduce(&raten, &rated, st->codec->time_base.den, + st->codec->time_base.num, (1UL << 31) - 1); + + aspectn = st->sample_aspect_ratio.num; + aspectd = st->sample_aspect_ratio.den; + + if (aspectn == 0 && aspectd == 1) + aspectd = 0; // 0:0 means unknown inter = 'p'; /* progressive is the default */ - if (st->codec->coded_frame && st->codec->coded_frame->interlaced_frame) { + if (st->codec->coded_frame && st->codec->coded_frame->interlaced_frame) inter = st->codec->coded_frame->top_field_first ? 't' : 'b'; - } - switch(st->codec->pix_fmt) { - case PIX_FMT_GRAY8: + switch (st->codec->pix_fmt) { + case AV_PIX_FMT_GRAY8: colorspace = " Cmono"; break; - case PIX_FMT_YUV411P: + case AV_PIX_FMT_YUV411P: colorspace = " C411 XYSCSS=411"; break; - case PIX_FMT_YUV420P: - colorspace = (st->codec->codec_id == CODEC_ID_DVVIDEO)?" C420paldv XYSCSS=420PALDV":" C420mpeg2 XYSCSS=420MPEG2"; + case AV_PIX_FMT_YUV420P: + switch (st->codec->chroma_sample_location) { + case AVCHROMA_LOC_TOPLEFT: colorspace = " C420paldv XYSCSS=420PALDV"; break; + case AVCHROMA_LOC_LEFT: colorspace = " C420mpeg2 XYSCSS=420MPEG2"; break; + default: colorspace = " C420jpeg XYSCSS=420JPEG"; break; + } break; - case PIX_FMT_YUV422P: + case AV_PIX_FMT_YUV422P: colorspace = " C422 XYSCSS=422"; break; - case PIX_FMT_YUV444P: + case AV_PIX_FMT_YUV444P: colorspace = " C444 XYSCSS=444"; break; } /* construct stream header, if this is the first frame */ n = snprintf(buf, Y4M_LINE_MAX, "%s W%d H%d F%d:%d I%c A%d:%d%s\n", - Y4M_MAGIC, - width, - height, - raten, rated, - inter, - aspectn, aspectd, - colorspace); - + Y4M_MAGIC, width, height, raten, rated, inter, + aspectn, aspectd, colorspace); + return n; } static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt) { AVStream *st = s->streams[pkt->stream_index]; - ByteIOContext *pb = &s->pb; + AVIOContext *pb = s->pb; AVPicture *picture; int* first_pkt = s->priv_data; int width, height, h_chroma_shift, v_chroma_shift; - int i, m; - char buf2[Y4M_LINE_MAX+1]; + int i; + char buf2[Y4M_LINE_MAX + 1]; char buf1[20]; uint8_t *ptr, *ptr1, *ptr2; @@ -96,169 +105,193 @@ static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt) /* for the first packet we have to output the header as well */ if (*first_pkt) { *first_pkt = 0; - if (yuv4_generate_header(s, buf2) < 0) { - av_log(s, AV_LOG_ERROR, "Error. YUV4MPEG stream header write failed.\n"); - return AVERROR_IO; - } else { - put_buffer(pb, buf2, strlen(buf2)); - } + if (yuv4_generate_header(s, buf2) < 0) { + av_log(s, AV_LOG_ERROR, + "Error. YUV4MPEG stream header write failed.\n"); + return AVERROR(EIO); + } else { + avio_write(pb, buf2, strlen(buf2)); + } } /* construct frame header */ - - m = snprintf(buf1, sizeof(buf1), "%s\n", Y4M_FRAME_MAGIC); - put_buffer(pb, buf1, strlen(buf1)); - width = st->codec->width; + snprintf(buf1, sizeof(buf1), "%s\n", Y4M_FRAME_MAGIC); + avio_write(pb, buf1, strlen(buf1)); + + width = st->codec->width; height = st->codec->height; - + ptr = picture->data[0]; - for(i=0;ilinesize[0]; } - if (st->codec->pix_fmt != PIX_FMT_GRAY8){ - // Adjust for smaller Cb and Cr planes - avcodec_get_chroma_sub_sample(st->codec->pix_fmt, &h_chroma_shift, &v_chroma_shift); - width >>= h_chroma_shift; - height >>= v_chroma_shift; - - ptr1 = picture->data[1]; - ptr2 = picture->data[2]; - for(i=0;ilinesize[1]; - } - for(i=0;icodec->pix_fmt != AV_PIX_FMT_GRAY8) { + // Adjust for smaller Cb and Cr planes + av_pix_fmt_get_chroma_sub_sample(st->codec->pix_fmt, &h_chroma_shift, + &v_chroma_shift); + // Shift right, rounding up + width = -(-width >> h_chroma_shift); + height = -(-height >> v_chroma_shift); + + ptr1 = picture->data[1]; + ptr2 = picture->data[2]; + for (i = 0; i < height; i++) { /* Cb */ + avio_write(pb, ptr1, width); + ptr1 += picture->linesize[1]; + } + for (i = 0; i < height; i++) { /* Cr */ + avio_write(pb, ptr2, width); ptr2 += picture->linesize[2]; + } } - } - put_flush_packet(pb); return 0; } static int yuv4_write_header(AVFormatContext *s) { - int* first_pkt = s->priv_data; - + int *first_pkt = s->priv_data; + if (s->nb_streams != 1) - return AVERROR_IO; - - if (s->streams[0]->codec->pix_fmt == PIX_FMT_YUV411P) { - av_log(s, AV_LOG_ERROR, "Warning: generating rarely used 4:1:1 YUV stream, some mjpegtools might not work.\n"); - } - else if ((s->streams[0]->codec->pix_fmt != PIX_FMT_YUV420P) && - (s->streams[0]->codec->pix_fmt != PIX_FMT_YUV422P) && - (s->streams[0]->codec->pix_fmt != PIX_FMT_GRAY8) && - (s->streams[0]->codec->pix_fmt != PIX_FMT_YUV444P)) { - av_log(s, AV_LOG_ERROR, "ERROR: yuv4mpeg only handles yuv444p, yuv422p, yuv420p, yuv411p and gray pixel formats. Use -pix_fmt to select one.\n"); - return AVERROR_IO; + return AVERROR(EIO); + + if (s->streams[0]->codec->codec_id != AV_CODEC_ID_RAWVIDEO) { + av_log(s, AV_LOG_ERROR, "ERROR: Only rawvideo supported.\n"); + return AVERROR_INVALIDDATA; } - - *first_pkt = 1; - return 0; -} -static int yuv4_write_trailer(AVFormatContext *s) -{ + if (s->streams[0]->codec->pix_fmt == AV_PIX_FMT_YUV411P) { + av_log(s, AV_LOG_ERROR, "Warning: generating rarely used 4:1:1 YUV " + "stream, some mjpegtools might not work.\n"); + } else if ((s->streams[0]->codec->pix_fmt != AV_PIX_FMT_YUV420P) && + (s->streams[0]->codec->pix_fmt != AV_PIX_FMT_YUV422P) && + (s->streams[0]->codec->pix_fmt != AV_PIX_FMT_GRAY8) && + (s->streams[0]->codec->pix_fmt != AV_PIX_FMT_YUV444P)) { + av_log(s, AV_LOG_ERROR, "ERROR: yuv4mpeg only handles yuv444p, " + "yuv422p, yuv420p, yuv411p and gray pixel formats. " + "Use -pix_fmt to select one.\n"); + return AVERROR(EIO); + } + + *first_pkt = 1; return 0; } -AVOutputFormat yuv4mpegpipe_oformat = { - "yuv4mpegpipe", - "YUV4MPEG pipe format", - "", - "y4m", - sizeof(int), - CODEC_ID_NONE, - CODEC_ID_RAWVIDEO, - yuv4_write_header, - yuv4_write_packet, - yuv4_write_trailer, - .flags = AVFMT_RAWPICTURE, +AVOutputFormat ff_yuv4mpegpipe_muxer = { + .name = "yuv4mpegpipe", + .long_name = NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"), + .mime_type = "", + .extensions = "y4m", + .priv_data_size = sizeof(int), + .audio_codec = AV_CODEC_ID_NONE, + .video_codec = AV_CODEC_ID_RAWVIDEO, + .write_header = yuv4_write_header, + .write_packet = yuv4_write_packet, + .flags = AVFMT_RAWPICTURE, }; -#endif //CONFIG_ENCODERS +#endif /* Header size increased to allow room for optional flags */ #define MAX_YUV4_HEADER 80 #define MAX_FRAME_HEADER 80 -static int yuv4_read_header(AVFormatContext *s, AVFormatParameters *ap) +static int yuv4_read_header(AVFormatContext *s) { - char header[MAX_YUV4_HEADER+10]; // Include headroom for the longest option - char *tokstart,*tokend,*header_end; + char header[MAX_YUV4_HEADER + 10]; // Include headroom for + // the longest option + char *tokstart, *tokend, *header_end; int i; - ByteIOContext *pb = &s->pb; - int width=-1, height=-1, raten=0, rated=0, aspectn=0, aspectd=0,interlaced_frame=0,top_field_first=0; - enum PixelFormat pix_fmt=PIX_FMT_NONE,alt_pix_fmt=PIX_FMT_NONE; + AVIOContext *pb = s->pb; + int width = -1, height = -1, raten = 0, + rated = 0, aspectn = 0, aspectd = 0; + enum AVPixelFormat pix_fmt = AV_PIX_FMT_NONE, alt_pix_fmt = AV_PIX_FMT_NONE; + enum AVChromaLocation chroma_sample_location = AVCHROMA_LOC_UNSPECIFIED; AVStream *st; - - for (i=0; ipriv_data; + + for (i = 0; i < MAX_YUV4_HEADER; i++) { + header[i] = avio_r8(pb); + if (header[i] == '\n') { + header[i + 1] = 0x20; // Add a space after last option. + // Makes parsing "444" vs "444alpha" easier. + header[i + 2] = 0; + break; + } } - if (i == MAX_YUV4_HEADER) return -1; - if (strncmp(header, Y4M_MAGIC, strlen(Y4M_MAGIC))) return -1; + if (i == MAX_YUV4_HEADER) + return -1; + if (strncmp(header, Y4M_MAGIC, strlen(Y4M_MAGIC))) + return -1; - header_end = &header[i+1]; // Include space - for(tokstart = &header[strlen(Y4M_MAGIC) + 1]; tokstart < header_end; tokstart++) { - if (*tokstart==0x20) continue; + s1->interlaced_frame = 0; + s1->top_field_first = 0; + header_end = &header[i + 1]; // Include space + for (tokstart = &header[strlen(Y4M_MAGIC) + 1]; + tokstart < header_end; tokstart++) { + if (*tokstart == 0x20) + continue; switch (*tokstart++) { case 'W': // Width. Required. - width = strtol(tokstart, &tokend, 10); - tokstart=tokend; + width = strtol(tokstart, &tokend, 10); + tokstart = tokend; break; case 'H': // Height. Required. - height = strtol(tokstart, &tokend, 10); - tokstart=tokend; + height = strtol(tokstart, &tokend, 10); + tokstart = tokend; break; case 'C': // Color space - if (strncmp("420jpeg",tokstart,7)==0) - pix_fmt = PIX_FMT_YUV420P; - else if (strncmp("420mpeg2",tokstart,8)==0) - pix_fmt = PIX_FMT_YUV420P; - else if (strncmp("420paldv", tokstart, 8)==0) - pix_fmt = PIX_FMT_YUV420P; - else if (strncmp("411", tokstart, 3)==0) - pix_fmt = PIX_FMT_YUV411P; - else if (strncmp("422", tokstart, 3)==0) - pix_fmt = PIX_FMT_YUV422P; - else if (strncmp("444alpha", tokstart, 8)==0) { - av_log(s, AV_LOG_ERROR, "Cannot handle 4:4:4:4 YUV4MPEG stream.\n"); + if (strncmp("420jpeg", tokstart, 7) == 0) { + pix_fmt = AV_PIX_FMT_YUV420P; + chroma_sample_location = AVCHROMA_LOC_CENTER; + } else if (strncmp("420mpeg2", tokstart, 8) == 0) { + pix_fmt = AV_PIX_FMT_YUV420P; + chroma_sample_location = AVCHROMA_LOC_LEFT; + } else if (strncmp("420paldv", tokstart, 8) == 0) { + pix_fmt = AV_PIX_FMT_YUV420P; + chroma_sample_location = AVCHROMA_LOC_TOPLEFT; + } else if (strncmp("420", tokstart, 3) == 0) { + pix_fmt = AV_PIX_FMT_YUV420P; + chroma_sample_location = AVCHROMA_LOC_CENTER; + } else if (strncmp("411", tokstart, 3) == 0) + pix_fmt = AV_PIX_FMT_YUV411P; + else if (strncmp("422", tokstart, 3) == 0) + pix_fmt = AV_PIX_FMT_YUV422P; + else if (strncmp("444alpha", tokstart, 8) == 0 ) { + av_log(s, AV_LOG_ERROR, "Cannot handle 4:4:4:4 " + "YUV4MPEG stream.\n"); return -1; - } else if (strncmp("444", tokstart, 3)==0) - pix_fmt = PIX_FMT_YUV444P; - else if (strncmp("mono",tokstart, 4)==0) { - pix_fmt = PIX_FMT_GRAY8; + } else if (strncmp("444", tokstart, 3) == 0) + pix_fmt = AV_PIX_FMT_YUV444P; + else if (strncmp("mono", tokstart, 4) == 0) { + pix_fmt = AV_PIX_FMT_GRAY8; } else { - av_log(s, AV_LOG_ERROR, "YUV4MPEG stream contains an unknown pixel format.\n"); + av_log(s, AV_LOG_ERROR, "YUV4MPEG stream contains an unknown " + "pixel format.\n"); return -1; } - while(tokstartinterlaced_frame = 0; break; case 't': - interlaced_frame=1; - top_field_first=1; + s1->interlaced_frame = 1; + s1->top_field_first = 1; break; case 'b': - interlaced_frame=1; - top_field_first=0; + s1->interlaced_frame = 1; + s1->top_field_first = 0; break; case 'm': - av_log(s, AV_LOG_ERROR, "YUV4MPEG stream contains mixed interlaced and non-interlaced frames.\n"); + av_log(s, AV_LOG_ERROR, "YUV4MPEG stream contains mixed " + "interlaced and non-interlaced frames.\n"); return -1; default: av_log(s, AV_LOG_ERROR, "YUV4MPEG has invalid header.\n"); @@ -266,48 +299,51 @@ static int yuv4_read_header(AVFormatContext *s, AVFormatParameters *ap) } break; case 'F': // Frame rate - sscanf(tokstart,"%d:%d",&raten,&rated); // 0:0 if unknown - while(tokstartstreams[0]; - st->codec->width = width; + + st = avformat_new_stream(s, NULL); + if (!st) + return AVERROR(ENOMEM); + st->codec->width = width; st->codec->height = height; - av_reduce(&raten, &rated, raten, rated, (1UL<<31)-1); - av_set_pts_info(st, 64, rated, raten); - st->codec->pix_fmt = pix_fmt; - st->codec->codec_type = CODEC_TYPE_VIDEO; - st->codec->codec_id = CODEC_ID_RAWVIDEO; - st->codec->sample_aspect_ratio= (AVRational){aspectn, aspectd}; + av_reduce(&raten, &rated, raten, rated, (1UL << 31) - 1); + avpriv_set_pts_info(st, 64, rated, raten); + st->avg_frame_rate = av_inv_q(st->time_base); + st->codec->pix_fmt = pix_fmt; + st->codec->codec_type = AVMEDIA_TYPE_VIDEO; + st->codec->codec_id = AV_CODEC_ID_RAWVIDEO; + st->sample_aspect_ratio = (AVRational){ aspectn, aspectd }; + st->codec->chroma_sample_location = chroma_sample_location; return 0; } @@ -336,66 +375,66 @@ static int yuv4_read_packet(AVFormatContext *s, AVPacket *pkt) { int i; char header[MAX_FRAME_HEADER+1]; - int packet_size, width, height; + int packet_size, width, height, ret; AVStream *st = s->streams[0]; + struct frame_attributes *s1 = s->priv_data; - for (i=0; ipb); - if (header[i] == '\n') { - header[i+1] = 0; - break; - } + for (i = 0; i < MAX_FRAME_HEADER; i++) { + header[i] = avio_r8(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; + if (s->pb->error) + return s->pb->error; + else if (s->pb->eof_reached) + return AVERROR_EOF; + else if (i == MAX_FRAME_HEADER) + return AVERROR_INVALIDDATA; + + if (strncmp(header, Y4M_FRAME_MAGIC, strlen(Y4M_FRAME_MAGIC))) + return AVERROR_INVALIDDATA; + + width = st->codec->width; height = st->codec->height; packet_size = avpicture_get_size(st->codec->pix_fmt, width, height); if (packet_size < 0) - return -1; + return packet_size; - if (av_get_packet(&s->pb, pkt, packet_size) != packet_size) - return AVERROR_IO; + ret = av_get_packet(s->pb, pkt, packet_size); + if (ret < 0) + return ret; + else if (ret != packet_size) + return s->pb->eof_reached ? AVERROR_EOF : AVERROR(EIO); - pkt->stream_index = 0; - return 0; -} + if (st->codec->coded_frame) { + st->codec->coded_frame->interlaced_frame = s1->interlaced_frame; + st->codec->coded_frame->top_field_first = s1->top_field_first; + } -static int yuv4_read_close(AVFormatContext *s) -{ + pkt->stream_index = 0; return 0; } static int yuv4_probe(AVProbeData *pd) { /* check file header */ - if (pd->buf_size <= sizeof(Y4M_MAGIC)) - return 0; - if (strncmp(pd->buf, Y4M_MAGIC, sizeof(Y4M_MAGIC)-1)==0) + if (strncmp(pd->buf, Y4M_MAGIC, sizeof(Y4M_MAGIC) - 1) == 0) return AVPROBE_SCORE_MAX; else return 0; } -AVInputFormat yuv4mpegpipe_iformat = { - "yuv4mpegpipe", - "YUV4MPEG pipe format", - 0, - yuv4_probe, - yuv4_read_header, - yuv4_read_packet, - yuv4_read_close, - .extensions = "y4m" +#if CONFIG_YUV4MPEGPIPE_DEMUXER +AVInputFormat ff_yuv4mpegpipe_demuxer = { + .name = "yuv4mpegpipe", + .long_name = NULL_IF_CONFIG_SMALL("YUV4MPEG pipe"), + .priv_data_size = sizeof(struct frame_attributes), + .read_probe = yuv4_probe, + .read_header = yuv4_read_header, + .read_packet = yuv4_read_packet, + .extensions = "y4m", }; - -int yuv4mpeg_init(void) -{ - av_register_input_format(&yuv4mpegpipe_iformat); -#ifdef CONFIG_ENCODERS - av_register_output_format(&yuv4mpegpipe_oformat); -#endif //CONFIG_ENCODERS - return 0; -} - +#endif