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added PPM read/write support - added pgmyuvpipe format - added PPM pipe read/write support 

Originally committed as revision 65 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard 2001-08-11 18:59:34 +00:00
parent cfcf0ffda6
commit 6775c758c4
3 changed files with 161 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libav/avformat.h
View File

@ -126,9 +126,13 @@ extern AVFormat wav_format;
/* img.c */
extern AVFormat pgm_format;
extern AVFormat ppm_format;
extern AVFormat pgmyuv_format;
extern AVFormat imgyuv_format;
extern AVFormat pgmpipe_format;
extern AVFormat pgmyuvpipe_format;
extern AVFormat ppmpipe_format;
/* raw.c */
extern AVFormat mp2_format;

173
libav/img.c
View File

@ -29,6 +29,7 @@
#define IMGFMT_YUV 1
#define IMGFMT_PGMYUV 2
#define IMGFMT_PGM 3
#define IMGFMT_PPM 4
typedef struct {
int width;
@ -109,6 +110,31 @@ static int pgm_read(VideoData *s, ByteIOContext *f, UINT8 *buf, int size, int is
return 0;
}
static int ppm_read(VideoData *s, ByteIOContext *f, UINT8 *buf, int size)
{
int width, height;
char buf1[32];
UINT8 *picture[3];
width = s->width;
height = s->height;
pnm_get(f, buf1, sizeof(buf1));
if (strcmp(buf1, "P6")) {
return -EIO;
}
pnm_get(f, buf1, sizeof(buf1));
pnm_get(f, buf1, sizeof(buf1));
pnm_get(f, buf1, sizeof(buf1));
picture[0] = buf;
get_buffer(f, picture[0], width * height*3);
return 0;
}
static int yuv_read(VideoData *s, const char *filename, UINT8 *buf, int size1)
{
ByteIOContext pb1, *pb = &pb1;
@ -176,6 +202,9 @@ int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
case IMGFMT_YUV:
ret = yuv_read(s, filename, pkt->data, pkt->size);
break;
case IMGFMT_PPM:
ret = ppm_read(s, f, pkt->data, pkt->size);
break;
default:
return -EIO;
}
@ -250,13 +279,17 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
else
s->is_pipe = 1;
if (s1->format == &pgmpipe_format ||
if (s1->format == &pgmyuvpipe_format ||
s1->format == &pgmyuv_format)
s->img_fmt = IMGFMT_PGMYUV;
else if (s1->format == &pgm_format)
else if (s1->format == &pgmpipe_format ||
s1->format == &pgm_format)
s->img_fmt = IMGFMT_PGM;
else if (s1->format == &imgyuv_format)
s->img_fmt = IMGFMT_YUV;
else if (s1->format == &ppmpipe_format ||
s1->format == &ppm_format)
s->img_fmt = IMGFMT_PPM;
else
goto fail;
@ -279,6 +312,7 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
switch(s->img_fmt) {
case IMGFMT_PGM:
case IMGFMT_PGMYUV:
case IMGFMT_PPM:
pnm_get(f, buf1, sizeof(buf1));
pnm_get(f, buf1, sizeof(buf1));
s->width = atoi(buf1);
@ -316,13 +350,18 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
url_fseek(f, 0, SEEK_SET);
}
s->img_size = (s->width * s->height * 3) / 2;
st->codec.codec_type = CODEC_TYPE_VIDEO;
st->codec.codec_id = CODEC_ID_RAWVIDEO;
st->codec.width = s->width;
st->codec.height = s->height;
st->codec.pix_fmt = PIX_FMT_YUV420P;
if (s->img_fmt == IMGFMT_PPM) {
st->codec.pix_fmt = PIX_FMT_RGB24;
s->img_size = (s->width * s->height * 3);
} else {
st->codec.pix_fmt = PIX_FMT_YUV420P;
s->img_size = (s->width * s->height * 3) / 2;
}
if (!ap || !ap->frame_rate)
st->codec.frame_rate = 25 * FRAME_RATE_BASE;
else
@ -347,7 +386,7 @@ static int img_read_close(AVFormatContext *s1)
/******************************************************/
/* image output */
int pgm_save(AVPicture *picture, int width, int height, ByteIOContext *pb, int is_yuv)
static int pgm_save(AVPicture *picture, int width, int height, ByteIOContext *pb, int is_yuv)
{
int i, h;
char buf[100];
@ -383,6 +422,27 @@ int pgm_save(AVPicture *picture, int width, int height, ByteIOContext *pb, int i
return 0;
}
static int ppm_save(AVPicture *picture, int width, int height, ByteIOContext *pb)
{
int i;
char buf[100];
UINT8 *ptr;
snprintf(buf, sizeof(buf),
"P6\n%d %d\n%d\n",
width, height, 255);
put_buffer(pb, buf, strlen(buf));
ptr = picture->data[0];
for(i=0;i<height;i++) {
put_buffer(pb, ptr, width * 3);
ptr += picture->linesize[0];
}
put_flush_packet(pb);
return 0;
}
static int yuv_save(AVPicture *picture, int width, int height, const char *filename)
{
ByteIOContext pb1, *pb = &pb1;
@ -434,15 +494,20 @@ static int img_write_header(AVFormatContext *s)
else
img->is_pipe = 1;
if (s->format == &pgmpipe_format ||
s->format == &pgmyuv_format)
if (s->format == &pgmyuvpipe_format ||
s->format == &pgmyuv_format) {
img->img_fmt = IMGFMT_PGMYUV;
else if (s->format == &pgm_format)
} else if (s->format == &pgmpipe_format ||
s->format == &pgm_format) {
img->img_fmt = IMGFMT_PGM;
else if (s->format == &imgyuv_format)
} else if (s->format == &imgyuv_format) {
img->img_fmt = IMGFMT_YUV;
else
} else if (s->format == &ppmpipe_format ||
s->format == &ppm_format) {
img->img_fmt = IMGFMT_PPM;
} else {
goto fail;
}
return 0;
fail:
free(img);
@ -461,16 +526,31 @@ static int img_write_packet(AVFormatContext *s, int stream_index,
width = st->codec.width;
height = st->codec.height;
size1 = (width * height * 3) / 2;
if (size != size1)
return -EIO;
picture.data[0] = buf;
picture.data[1] = picture.data[0] + width * height;
picture.data[2] = picture.data[1] + (width * height) / 4;
picture.linesize[0] = width;
picture.linesize[1] = width >> 1;
picture.linesize[2] = width >> 1;
switch(st->codec.pix_fmt) {
case PIX_FMT_YUV420P:
size1 = (width * height * 3) / 2;
if (size != size1)
return -EIO;
picture.data[0] = buf;
picture.data[1] = picture.data[0] + width * height;
picture.data[2] = picture.data[1] + (width * height) / 4;
picture.linesize[0] = width;
picture.linesize[1] = width >> 1;
picture.linesize[2] = width >> 1;
break;
case PIX_FMT_RGB24:
size1 = (width * height * 3);
if (size != size1)
return -EIO;
picture.data[0] = buf;
picture.linesize[0] = width * 3;
break;
default:
return -EIO;
}
snprintf(filename, sizeof(filename), img->path, img->img_number);
if (!img->is_pipe) {
@ -490,6 +570,9 @@ static int img_write_packet(AVFormatContext *s, int stream_index,
case IMGFMT_YUV:
ret = yuv_save(&picture, width, height, filename);
break;
case IMGFMT_PPM:
ret = ppm_save(&picture, width, height, pb);
break;
}
if (!img->is_pipe) {
url_fclose(pb);
@ -542,6 +625,24 @@ AVFormat pgmyuv_format = {
AVFMT_NOFILE,
};
AVFormat ppm_format = {
"ppm",
"ppm image format",
"",
"ppm",
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
img_read_header,
img_read_packet,
img_read_close,
NULL,
AVFMT_NOFILE,
};
AVFormat imgyuv_format = {
".Y.U.V",
".Y.U.V format",
@ -576,3 +677,37 @@ AVFormat pgmpipe_format = {
img_read_close,
NULL,
};
AVFormat pgmyuvpipe_format = {
"pgmyuvpipe",
"PGM YUV pipe format",
"",
"pgm",
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
img_read_header,
img_read_packet,
img_read_close,
NULL,
};
AVFormat ppmpipe_format = {
"ppmpipe",
"PPM pipe format",
"",
"ppm",
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
img_read_header,
img_read_packet,
img_read_close,
NULL,
};

3
libav/utils.c
View File

@ -143,9 +143,12 @@ void register_all(void)
register_avformat(&rawvideo_format);
register_avformat(&ffm_format);
register_avformat(&pgm_format);
register_avformat(&ppm_format);
register_avformat(&pgmyuv_format);
register_avformat(&imgyuv_format);
register_avformat(&pgmpipe_format);
register_avformat(&pgmyuvpipe_format);
register_avformat(&ppmpipe_format);
register_protocol(&file_protocol);
register_protocol(&pipe_protocol);