* YUV4MPEG format
* Copyright (c) 2001, 2002, 2003 Fabrice Bellard.
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 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,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
#define Y4M_FRAME_MAGIC "FRAME"
#define Y4M_LINE_MAX 256
-#ifdef CONFIG_ENCODERS
+struct frame_attributes {
+ int interlaced_frame;
+ int top_field_first;
+};
+#ifdef 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;
- height = st->codec.height;
-
- av_reduce(&raten, &rated, st->codec.frame_rate, st->codec.frame_rate_base, (1UL<<31)-1);
-
- aspectn = st->codec.sample_aspect_ratio.num;
- aspectd = st->codec.sample_aspect_ratio.den;
-
+ 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->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) {
- inter = st->codec.coded_frame->top_field_first ? 't' : 'b';
+ 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) {
+ switch(st->codec->pix_fmt) {
case PIX_FMT_GRAY8:
colorspace = " Cmono";
break;
colorspace = " C411 XYSCSS=411";
break;
case PIX_FMT_YUV420P:
- colorspace = (st->codec.codec_id == CODEC_ID_DVVIDEO)?" C420paldv XYSCSS=420PALDV":" C420mpeg2 XYSCSS=420MPEG2";
+ colorspace = (st->codec->codec_id == CODEC_ID_DVVIDEO)?" C420paldv XYSCSS=420PALDV":" C420mpeg2 XYSCSS=420MPEG2";
break;
case PIX_FMT_YUV422P:
colorspace = " C422 XYSCSS=422";
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;
+ ByteIOContext *pb = s->pb;
AVPicture *picture;
int* first_pkt = s->priv_data;
int width, height, h_chroma_shift, v_chroma_shift;
/* 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 {
+ put_buffer(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;
- height = st->codec.height;
-
+ width = st->codec->width;
+ height = st->codec->height;
+
ptr = picture->data[0];
for(i=0;i<height;i++) {
put_buffer(pb, ptr, width);
ptr += picture->linesize[0];
}
- if (st->codec.pix_fmt != PIX_FMT_GRAY8){
+ 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);
+ 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;i<height;i++) { /* Cb */
+ for(i=0;i<height;i++) { /* Cb */
put_buffer(pb, ptr1, width);
ptr1 += picture->linesize[1];
}
- for(i=0;i<height;i++) { /* Cr */
+ for(i=0;i<height;i++) { /* Cr */
put_buffer(pb, ptr2, width);
ptr2 += picture->linesize[2];
}
static int yuv4_write_header(AVFormatContext *s)
{
int* first_pkt = s->priv_data;
-
+
if (s->nb_streams != 1)
- return AVERROR_IO;
-
- if (s->streams[0]->codec.pix_fmt == PIX_FMT_YUV411P) {
+ return AVERROR(EIO);
+
+ 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)) {
+ }
+ 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);
}
-
- *first_pkt = 1;
- return 0;
-}
-static int yuv4_write_trailer(AVFormatContext *s)
-{
+ *first_pkt = 1;
return 0;
}
-AVOutputFormat yuv4mpegpipe_oformat = {
+AVOutputFormat yuv4mpegpipe_muxer = {
"yuv4mpegpipe",
- "YUV4MPEG pipe format",
+ NULL_IF_CONFIG_SMALL("YUV4MPEG pipe format"),
"",
- "yuv4mpeg",
+ "y4m",
sizeof(int),
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
yuv4_write_header,
yuv4_write_packet,
- yuv4_write_trailer,
.flags = AVFMT_RAWPICTURE,
};
-#endif //CONFIG_ENCODERS
+#endif
/* Header size increased to allow room for optional flags */
#define MAX_YUV4_HEADER 80
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;
+ ByteIOContext *pb = s->pb;
+ int width=-1, height=-1, raten=0, rated=0, aspectn=0, aspectd=0;
enum PixelFormat pix_fmt=PIX_FMT_NONE,alt_pix_fmt=PIX_FMT_NONE;
AVStream *st;
-
+ struct frame_attributes *s1 = s->priv_data;
+
for (i=0; i<MAX_YUV4_HEADER; i++) {
header[i] = get_byte(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 (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;
+ 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;
case '?':
break;
case 'p':
- interlaced_frame=0;
+ s1->interlaced_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");
while(tokstart<header_end&&*tokstart!=0x20) tokstart++;
break;
}
- }
+ }
if ((width == -1) || (height == -1)) {
av_log(s, AV_LOG_ERROR, "YUV4MPEG has invalid header.\n");
- return -1;
+ return -1;
}
-
+
if (pix_fmt == PIX_FMT_NONE) {
if (alt_pix_fmt == PIX_FMT_NONE)
pix_fmt = PIX_FMT_YUV420P;
// Pixel aspect unknown
aspectd = 1;
}
-
+
st = av_new_stream(s, 0);
- st = s->streams[0];
- st->codec.width = width;
- st->codec.height = height;
+ if(!st)
+ return AVERROR(ENOMEM);
+ 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;
- 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_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->sample_aspect_ratio= (AVRational){aspectn, aspectd};
return 0;
}
{
int i;
char header[MAX_FRAME_HEADER+1];
- int packet_size, ret, width, height;
+ int packet_size, width, height;
AVStream *st = s->streams[0];
+ struct frame_attributes *s1 = s->priv_data;
for (i=0; i<MAX_FRAME_HEADER; i++) {
- header[i] = get_byte(&s->pb);
- if (header[i] == '\n') {
- header[i+1] = 0;
- break;
- }
+ 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);
+ 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;
- if (av_new_packet(pkt, packet_size) < 0)
- return AVERROR_IO;
+ if (av_get_packet(s->pb, pkt, packet_size) != packet_size)
+ return AVERROR(EIO);
- pkt->stream_index = 0;
- ret = get_buffer(&s->pb, pkt->data, pkt->size);
- if (ret != pkt->size) {
- av_free_packet(pkt);
- return AVERROR_IO;
- } else {
- return 0;
+ if (s->streams[0]->codec->coded_frame) {
+ s->streams[0]->codec->coded_frame->interlaced_frame = s1->interlaced_frame;
+ s->streams[0]->codec->coded_frame->top_field_first = s1->top_field_first;
}
+
+ pkt->stream_index = 0;
+ return 0;
}
-static int yuv4_read_close(AVFormatContext *s)
+static int yuv4_probe(AVProbeData *pd)
{
- return 0;
+ /* check file header */
+ if (strncmp(pd->buf, Y4M_MAGIC, sizeof(Y4M_MAGIC)-1)==0)
+ return AVPROBE_SCORE_MAX;
+ else
+ return 0;
}
-AVInputFormat yuv4mpegpipe_iformat = {
+#ifdef CONFIG_YUV4MPEGPIPE_DEMUXER
+AVInputFormat yuv4mpegpipe_demuxer = {
"yuv4mpegpipe",
- "YUV4MPEG pipe format",
- 0,
- NULL,
+ NULL_IF_CONFIG_SMALL("YUV4MPEG pipe format"),
+ sizeof(struct frame_attributes),
+ yuv4_probe,
yuv4_read_header,
yuv4_read_packet,
- yuv4_read_close,
- .extensions = "yuv4mpeg"
+ .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
projects / ffmpeg / blobdiff