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ffmpeg
Commit 87a0a681 authored by Fabrice Bellard's avatar Fabrice Bellard
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added still image support 

Originally committed as revision 1439 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent f746a046
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Showing with 711 additions and 753 deletions
libavformat/Makefile
View file @ 87a0a681
......@@ -12,9 +12,13 @@ OBJS= utils.o cutils.o allformats.o
# mux and demuxes
OBJS+=mpeg.o mpegts.o ffm.o crc.o img.o raw.o rm.o asf.o \
avienc.o avidec.o wav.o swf.o au.o gif.o mov.o jpeg.o dv.o framehook.o
avienc.o avidec.o wav.o swf.o au.o gif.o mov.o jpeg.o dv.o \
yuv4mpeg.o
# image formats
OBJS+= pnm.o yuv.o
# file I/O
OBJS+= avio.o aviobuf.o file.o
OBJS+= framehook.o
ifeq ($(BUILD_STRPTIME),yes)
OBJS+= strptime.o
......
libavformat/allformats.c
View file @ 87a0a681
......@@ -46,6 +46,8 @@ void av_register_all(void)
jpeg_init();
dv_init();
av_register_output_format(&yuv4mpegpipe_oformat);
#ifdef CONFIG_VORBIS
ogg_init();
#endif
......@@ -60,6 +62,14 @@ void av_register_all(void)
audio_init();
#endif
/* image formats */
av_register_image_format(&pnm_image_format);
av_register_image_format(&pbm_image_format);
av_register_image_format(&pgm_image_format);
av_register_image_format(&ppm_image_format);
av_register_image_format(&pgmyuv_image_format);
av_register_image_format(&yuv_image_format);
/* file protocols */
register_protocol(&file_protocol);
register_protocol(&pipe_protocol);
......
libavformat/img.c
View file @ 87a0a681
......@@ -19,22 +19,6 @@
#include <unistd.h>
#include "avformat.h"
extern AVInputFormat pgm_iformat;
extern AVOutputFormat pgm_oformat;
extern AVInputFormat pgmyuv_iformat;
extern AVOutputFormat pgmyuv_oformat;
extern AVInputFormat ppm_iformat;
extern AVOutputFormat ppm_oformat;
extern AVInputFormat imgyuv_iformat;
extern AVOutputFormat imgyuv_oformat;
extern AVInputFormat pgmpipe_iformat;
extern AVOutputFormat pgmpipe_oformat;
extern AVInputFormat pgmyuvpipe_iformat;
extern AVOutputFormat pgmyuvpipe_oformat;
extern AVInputFormat ppmpipe_iformat;
extern AVOutputFormat ppmpipe_oformat;
extern AVOutputFormat yuv4mpegpipe_oformat;
#ifdef __MINGW32__
# include <windows.h>
# define usleep(t) Sleep((t) / 1000)
......@@ -46,266 +30,45 @@ extern AVOutputFormat yuv4mpegpipe_oformat;
# endif
#endif
#define IMGFMT_YUV 1
#define IMGFMT_PGMYUV 2
#define IMGFMT_PGM 3
#define IMGFMT_PPM 4
#define IMGFMT_YUV4MPEG 5
#define Y4M_MAGIC "YUV4MPEG2"
#define Y4M_FRAME_MAGIC "FRAME"
#define Y4M_LINE_MAX 256
typedef struct {
int width;
int height;
int img_number;
int img_size;
int img_fmt;
AVImageFormat *img_fmt;
int pix_fmt;
int is_pipe;
int header_written;
char path[1024];
/* temporary usage */
void *ptr;
} VideoData;
int emulate_frame_rate;
static inline int pnm_space(int c)
{
return (c==' ' || c=='\n' || c=='\r' || c=='\t');
}
static void pnm_get(ByteIOContext *f, char *str, int buf_size)
{
char *s;
int c;
do {
c=get_byte(f);
if (c=='#') {
do {
c=get_byte(f);
} while (c!='\n');
c=get_byte(f);
}
} while (pnm_space(c));
s=str;
do {
if (url_feof(f))
break;
if ((s - str) < buf_size - 1)
*s++=c;
c=get_byte(f);
} while (!pnm_space(c));
*s = '\0';
}
static int pgm_read(VideoData *s, ByteIOContext *f, UINT8 *buf, int size, int is_yuv)
{
int width, height, i;
char buf1[32];
UINT8 *picture[3];
width = s->width;
height = s->height;
pnm_get(f, buf1, sizeof(buf1));
if (strcmp(buf1, "P5")) {
return -EIO;
}
pnm_get(f, buf1, sizeof(buf1));
pnm_get(f, buf1, sizeof(buf1));
pnm_get(f, buf1, sizeof(buf1));
picture[0] = buf;
picture[1] = buf + width * height;
picture[2] = buf + width * height + (width * height / 4);
get_buffer(f, picture[0], width * height);
height>>=1;
width>>=1;
if (is_yuv) {
for(i=0;i<height;i++) {
get_buffer(f, picture[1] + i * width, width);
get_buffer(f, picture[2] + i * width, width);
}
} else {
for(i=0;i<height;i++) {
memset(picture[1] + i * width, 128, width);
memset(picture[2] + i * width, 128, width);
}
}
return 0;
}
static int ppm_read(VideoData *s, ByteIOContext *f, UINT8 *buf, int size)
static int image_probe(AVProbeData *p)
{
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;
char fname[1024], *p;
int size;
size = s->width * s->height;
strcpy(fname, filename);
p = strrchr(fname, '.');
if (!p || p[1] != 'Y')
return -EIO;
if (url_fopen(pb, fname, URL_RDONLY) < 0)
return -EIO;
get_buffer(pb, buf, size);
url_fclose(pb);
p[1] = 'U';
if (url_fopen(pb, fname, URL_RDONLY) < 0)
return -EIO;
get_buffer(pb, buf + size, size / 4);
url_fclose(pb);
p[1] = 'V';
if (url_fopen(pb, fname, URL_RDONLY) < 0)
return -EIO;
get_buffer(pb, buf + size + (size / 4), size / 4);
url_fclose(pb);
return 0;
}
static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
{
VideoData *s = s1->priv_data;
char filename[1024];
int ret;
ByteIOContext f1, *f;
static INT64 first_frame;
if (emulate_frame_rate) {
if (!first_frame) {
first_frame = av_gettime();
} else {
INT64 pts;
INT64 nowus;
nowus = av_gettime() - first_frame;
pts = ((INT64)s->img_number * FRAME_RATE_BASE * 1000000) / (s1->streams[0]->codec.frame_rate);
if (pts > nowus)
usleep(pts - nowus);
}
}
/*
This if-statement destroys pipes - I do not see why it is necessary
if (get_frame_filename(filename, sizeof(filename),
s->path, s->img_number) < 0)
return -EIO;
*/
get_frame_filename(filename, sizeof(filename),
s->path, s->img_number);
if (!s->is_pipe) {
f = &f1;
if (url_fopen(f, filename, URL_RDONLY) < 0)
return -EIO;
} else {
f = &s1->pb;
if (url_feof(f))
return -EIO;
}
av_new_packet(pkt, s->img_size);
pkt->stream_index = 0;
switch(s->img_fmt) {
case IMGFMT_PGMYUV:
ret = pgm_read(s, f, pkt->data, pkt->size, 1);
break;
case IMGFMT_PGM:
ret = pgm_read(s, f, pkt->data, pkt->size, 0);
break;
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;
}
if (!s->is_pipe) {
url_fclose(f);
}
if (ret < 0) {
av_free_packet(pkt);
return -EIO; /* signal EOF */
} else {
pkt->pts = ((INT64)s->img_number * s1->pts_den * FRAME_RATE_BASE) / (s1->streams[0]->codec.frame_rate * s1->pts_num);
s->img_number++;
if (filename_number_test(p->filename) >= 0)
return AVPROBE_SCORE_MAX;
else
return 0;
}
}
static int sizes[][2] = {
{ 640, 480 },
{ 720, 480 },
{ 720, 576 },
{ 352, 288 },
{ 352, 240 },
{ 160, 128 },
{ 512, 384 },
{ 640, 352 },
{ 640, 240 },
};
static int infer_size(int *width_ptr, int *height_ptr, int size)
static int read_header_alloc_cb(void *opaque, AVImageInfo *info)
{
int i;
VideoData *s = opaque;
for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
if ((sizes[i][0] * sizes[i][1]) == size) {
*width_ptr = sizes[i][0];
*height_ptr = sizes[i][1];
return 0;
}
}
return -1;
s->width = info->width;
s->height = info->height;
s->pix_fmt = info->pix_fmt;
/* stop image reading but no error */
return 1;
}
static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
{
VideoData *s = s1->priv_data;
int i, h;
int i, ret;
char buf[1024];
char buf1[32];
ByteIOContext pb1, *f = &pb1;
AVStream *st;
......@@ -315,6 +78,9 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
return -ENOMEM;
}
if (ap && ap->image_format)
s->img_fmt = ap->image_format;
strcpy(s->path, s1->filename);
s->img_number = 0;
......@@ -324,20 +90,6 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
else
s->is_pipe = 1;
if (s1->iformat == &pgmyuvpipe_iformat ||
s1->iformat == &pgmyuv_iformat)
s->img_fmt = IMGFMT_PGMYUV;
else if (s1->iformat == &pgmpipe_iformat ||
s1->iformat == &pgm_iformat)
s->img_fmt = IMGFMT_PGM;
else if (s1->iformat == &imgyuv_iformat)
s->img_fmt = IMGFMT_YUV;
else if (s1->iformat == &ppmpipe_iformat ||
s1->iformat == &ppm_iformat)
s->img_fmt = IMGFMT_PPM;
else
goto fail;
if (!s->is_pipe) {
/* try to find the first image */
for(i=0;i<5;i++) {
......@@ -353,43 +105,9 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
f = &s1->pb;
}
/* find the image size */
/* XXX: use generic file format guessing, as mpeg */
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);
pnm_get(f, buf1, sizeof(buf1));
h = atoi(buf1);
if (s->img_fmt == IMGFMT_PGMYUV)
h = (h * 2) / 3;
s->height = h;
if (s->width <= 0 ||
s->height <= 0 ||
(s->width % 2) != 0 ||
(s->height % 2) != 0) {
ret = av_read_image(f, s1->filename, s->img_fmt, read_header_alloc_cb, s);
if (ret < 0)
goto fail1;
}
break;
case IMGFMT_YUV:
/* infer size by using the file size. */
{
int img_size;
URLContext *h;
/* XXX: hack hack */
h = url_fileno(f);
img_size = url_seek(h, 0, SEEK_END);
if (infer_size(&s->width, &s->height, img_size) < 0) {
goto fail1;
}
}
break;
}
if (!s->is_pipe) {
url_fclose(f);
......@@ -397,18 +115,13 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
url_fseek(f, 0, SEEK_SET);
}
st->codec.codec_type = CODEC_TYPE_VIDEO;
st->codec.codec_id = CODEC_ID_RAWVIDEO;
st->codec.width = s->width;
st->codec.height = s->height;
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;
}
st->codec.pix_fmt = s->pix_fmt;
s->img_size = avpicture_get_size(s->pix_fmt, s->width, s->height);
if (!ap || !ap->frame_rate)
st->codec.frame_rate = 25 * FRAME_RATE_BASE;
else
......@@ -423,159 +136,111 @@ static int img_read_header(AVFormatContext *s1, AVFormatParameters *ap)
return -EIO;
}
static int img_read_close(AVFormatContext *s1)
{
return 0;
}
/******************************************************/
/* image output */
static int pgm_save(AVPicture *picture, int width, int height, ByteIOContext *pb, int is_yuv)
static int read_packet_alloc_cb(void *opaque, AVImageInfo *info)
{
int i, h;
char buf[100];
UINT8 *ptr, *ptr1, *ptr2;
h = height;
if (is_yuv)
h = (height * 3) / 2;
snprintf(buf, sizeof(buf),
"P5\n%d %d\n%d\n",
width, h, 255);
put_buffer(pb, buf, strlen(buf));
ptr = picture->data[0];
for(i=0;i<height;i++) {
put_buffer(pb, ptr, width);
ptr += picture->linesize[0];
}
VideoData *s = opaque;
if (is_yuv) {
height >>= 1;
width >>= 1;
ptr1 = picture->data[1];
ptr2 = picture->data[2];
for(i=0;i<height;i++) {
put_buffer(pb, ptr1, width);
put_buffer(pb, ptr2, width);
ptr1 += picture->linesize[1];
ptr2 += picture->linesize[2];
}
}
put_flush_packet(pb);
if (info->width != s->width ||
info->height != s->height)
return -1;
avpicture_fill(&info->pict, s->ptr, info->pix_fmt, info->width, info->height);
return 0;
}
static int ppm_save(AVPicture *picture, int width, int height, ByteIOContext *pb)
static int img_read_packet(AVFormatContext *s1, AVPacket *pkt)
{
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];
}
VideoData *s = s1->priv_data;
char filename[1024];
int ret;
ByteIOContext f1, *f;
static INT64 first_frame;
put_flush_packet(pb);
return 0;
}
if (emulate_frame_rate) {
if (!first_frame) {
first_frame = av_gettime();
} else {
INT64 pts;
INT64 nowus;
static int yuv_save(AVPicture *picture, int width, int height, const char *filename)
{
ByteIOContext pb1, *pb = &pb1;
char fname[1024], *p;
int i, j;
UINT8 *ptr;
static char *ext = "YUV";
strcpy(fname, filename);
p = strrchr(fname, '.');
if (!p || p[1] != 'Y')
return -EIO;
nowus = av_gettime() - first_frame;
for(i=0;i<3;i++) {
if (i == 1) {
width >>= 1;
height >>= 1;
pts = ((INT64)s->img_number * FRAME_RATE_BASE * 1000000) / (s1->streams[0]->codec.frame_rate);
if (pts > nowus)
usleep(pts - nowus);
}
}
p[1] = ext[i];
if (url_fopen(pb, fname, URL_WRONLY) < 0)
if (!s->is_pipe) {
if (get_frame_filename(filename, sizeof(filename),
s->path, s->img_number) < 0)
return -EIO;
f = &f1;
if (url_fopen(f, filename, URL_RDONLY) < 0)
return -EIO;
} else {
f = &s1->pb;
if (url_feof(f))
return -EIO;
}
av_new_packet(pkt, s->img_size);
pkt->stream_index = 0;
ptr = picture->data[i];
for(j=0;j<height;j++) {
put_buffer(pb, ptr, width);
ptr += picture->linesize[i];
s->ptr = pkt->data;
ret = av_read_image(f, filename, s->img_fmt, read_packet_alloc_cb, s);
if (!s->is_pipe) {
url_fclose(f);
}
put_flush_packet(pb);
url_fclose(pb);
if (ret < 0) {
av_free_packet(pkt);
return -EIO; /* signal EOF */
} else {
pkt->pts = ((INT64)s->img_number * s1->pts_den * FRAME_RATE_BASE) / (s1->streams[0]->codec.frame_rate * s1->pts_num);
s->img_number++;
return 0;
}
}
static int img_read_close(AVFormatContext *s1)
{
return 0;
}
static int yuv4mpeg_save(AVPicture *picture, int width, int height, ByteIOContext *pb, int need_stream_header,
int is_yuv, int raten, int rated, int aspectn, int aspectd)
/******************************************************/
/* image output */
static int img_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
{
int i, n, m;
char buf[Y4M_LINE_MAX+1], buf1[20];
UINT8 *ptr, *ptr1, *ptr2;
/* construct stream header, if this is the first frame */
if(need_stream_header) {
n = snprintf(buf, sizeof(buf), "%s W%d H%d F%d:%d I%s A%d:%d\n",
Y4M_MAGIC,
width,
height,
raten, rated,
"p", /* ffmpeg seems to only output progressive video */
aspectn, aspectd);
if (n < 0) {
fprintf(stderr, "Error. YUV4MPEG stream header write failed.\n");
} else {
fprintf(stderr, "YUV4MPEG stream header written. FPS is %d\n", raten);
put_buffer(pb, buf, strlen(buf));
}
}
VideoData *img = s->priv_data;
AVStream *st;
AVImageFormat *img_fmt;
int i;
/* construct frame header */
m = snprintf(buf1, sizeof(buf1), "%s \n", Y4M_FRAME_MAGIC);
if (m < 0) {
fprintf(stderr, "Error. YUV4MPEG frame header write failed.\n");
/* find output image format */
if (ap && ap->image_format) {
img_fmt = ap->image_format;
} else {
/* fprintf(stderr, "YUV4MPEG frame header written.\n"); */
put_buffer(pb, buf1, strlen(buf1));
img_fmt = guess_image_format(s->filename);
}
if (!img_fmt)
return -1;
ptr = picture->data[0];
for(i=0;i<height;i++) {
put_buffer(pb, ptr, width);
ptr += picture->linesize[0];
}
if (s->nb_streams != 1)
return -1;
if (is_yuv) {
height >>= 1;
width >>= 1;
ptr1 = picture->data[1];
ptr2 = picture->data[2];
for(i=0;i<height;i++) { /* Cb */
put_buffer(pb, ptr1, width);
ptr1 += picture->linesize[1];
}
for(i=0;i<height;i++) { /* Cr */
put_buffer(pb, ptr2, width);
ptr2 += picture->linesize[2];
}
st = s->streams[0];
/* we select the first matching format */
for(i=0;i<PIX_FMT_NB;i++) {
if (img_fmt->supported_pixel_formats & (1 << i))
break;
}
put_flush_packet(pb);
if (i >= PIX_FMT_NB)
return -1;
img->img_fmt = img_fmt;
img->pix_fmt = i;
st->codec.pix_fmt = img->pix_fmt;
return 0;
}
......@@ -592,27 +257,7 @@ static int img_write_header(AVFormatContext *s)
else
img->is_pipe = 1;
if (s->oformat == &pgmyuvpipe_oformat ||
s->oformat == &pgmyuv_oformat) {
img->img_fmt = IMGFMT_PGMYUV;
} else if (s->oformat == &pgmpipe_oformat ||
s->oformat == &pgm_oformat) {
img->img_fmt = IMGFMT_PGM;
} else if (s->oformat == &imgyuv_oformat) {
img->img_fmt = IMGFMT_YUV;
} else if (s->oformat == &ppmpipe_oformat ||
s->oformat == &ppm_oformat) {
img->img_fmt = IMGFMT_PPM;
} else if (s->oformat == &yuv4mpegpipe_oformat) {
img->img_fmt = IMGFMT_YUV4MPEG;
img->header_written = 0;
} else {
goto fail;
}
return 0;
fail:
av_free(img);
return -EIO;
}
static int img_write_packet(AVFormatContext *s, int stream_index,
......@@ -621,123 +266,31 @@ static int img_write_packet(AVFormatContext *s, int stream_index,
VideoData *img = s->priv_data;
AVStream *st = s->streams[stream_index];
ByteIOContext pb1, *pb;
AVPicture picture;
int width, height, need_stream_header, ret, size1, raten, rated, aspectn, aspectd, fps, fps1;
AVPicture *picture;
int width, height, ret;
char filename[1024];
AVImageInfo info;
width = st->codec.width;
height = st->codec.height;
if (img->img_number == 1) {
need_stream_header = 1;
} else {
need_stream_header = 0;
}
picture = (AVPicture *)buf;
fps = st->codec.frame_rate;
fps1 = (((float)fps / FRAME_RATE_BASE) * 1000);
/* Sorry about this messy code, but mpeg2enc is very picky about
* the framerates it accepts. */
switch(fps1) {
case 23976:
raten = 24000; /* turn the framerate into a ratio */
rated = 1001;
break;
case 29970:
raten = 30000;
rated = 1001;
break;
case 25000:
raten = 25;
rated = 1;
break;
case 30000:
raten = 30;
rated = 1;
break;
case 24000:
raten = 24;
rated = 1;
break;
case 50000:
raten = 50;
rated = 1;
break;
case 59940:
raten = 60000;
rated = 1001;
break;
case 60000:
raten = 60;
rated = 1;
break;
default:
raten = fps1; /* this setting should work, but often doesn't */
rated = 1000;
break;
}
aspectn = 1;
aspectd = 1; /* ffmpeg always uses a 1:1 aspect ratio */
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;
}
/*
This if-statement destroys pipes - I do not see why it is necessary
if (!img->is_pipe) {
if (get_frame_filename(filename, sizeof(filename),
img->path, img->img_number) < 0)
return -EIO;
*/
get_frame_filename(filename, sizeof(filename),
img->path, img->img_number);
if (!img->is_pipe) {
pb = &pb1;
if (url_fopen(pb, filename, URL_WRONLY) < 0)
return -EIO;
} else {
pb = &s->pb;
}
switch(img->img_fmt) {
case IMGFMT_PGMYUV:
ret = pgm_save(&picture, width, height, pb, 1);
break;
case IMGFMT_PGM:
ret = pgm_save(&picture, width, height, pb, 0);
break;
case IMGFMT_YUV:
ret = yuv_save(&picture, width, height, filename);
break;
case IMGFMT_PPM:
ret = ppm_save(&picture, width, height, pb);
break;
case IMGFMT_YUV4MPEG:
ret = yuv4mpeg_save(&picture, width, height, pb,
need_stream_header, 1, raten, rated, aspectn, aspectd);
break;
}
info.width = width;
info.height = height;
info.pix_fmt = st->codec.pix_fmt;
info.pict = *picture;
ret = av_write_image(pb, img->img_fmt, &info);
if (!img->is_pipe) {
url_fclose(pb);
}
......@@ -751,116 +304,23 @@ static int img_write_trailer(AVFormatContext *s)
return 0;
}
static AVInputFormat pgm_iformat = {
"pgm",
"pgm image format",
sizeof(VideoData),
NULL,
img_read_header,
img_read_packet,
img_read_close,
NULL,
AVFMT_NOFILE | AVFMT_NEEDNUMBER,
.extensions = "pgm",
};
/* input */
static AVOutputFormat pgm_oformat = {
"pgm",
"pgm image format",
"",
"pgm",
static AVInputFormat image_iformat = {
"image",
"image sequence",
sizeof(VideoData),
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
AVFMT_NOFILE | AVFMT_NEEDNUMBER,
};
static AVInputFormat pgmyuv_iformat = {
"pgmyuv",
"pgm with YUV content image format",
sizeof(VideoData),
NULL, /* no probe */
img_read_header,
img_read_packet,
img_read_close,
NULL,
AVFMT_NOFILE | AVFMT_NEEDNUMBER,
};
static AVOutputFormat pgmyuv_oformat = {
"pgmyuv",
"pgm with YUV content image format",
"",
"pgm",
sizeof(VideoData),
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
AVFMT_NOFILE | AVFMT_NEEDNUMBER,
};
static AVInputFormat ppm_iformat = {
"ppm",
"ppm image format",
sizeof(VideoData),
NULL,
image_probe,
img_read_header,
img_read_packet,
img_read_close,
NULL,
AVFMT_NOFILE | AVFMT_NEEDNUMBER | AVFMT_RGB24,
.extensions = "ppm",
};
static AVOutputFormat ppm_oformat = {
"ppm",
"ppm image format",
"",
"ppm",
sizeof(VideoData),
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
AVFMT_NOFILE | AVFMT_NEEDNUMBER | AVFMT_RGB24,
};
static AVInputFormat imgyuv_iformat = {
".Y.U.V",
".Y.U.V format",
sizeof(VideoData),
NULL,
img_read_header,
img_read_packet,
img_read_close,
NULL,
AVFMT_NOFILE | AVFMT_NEEDNUMBER,
.extensions = "Y",
};
static AVOutputFormat imgyuv_oformat = {
".Y.U.V",
".Y.U.V format",
"",
"Y",
sizeof(VideoData),
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
AVFMT_NOFILE | AVFMT_NEEDNUMBER,
};
static AVInputFormat pgmpipe_iformat = {
"pgmpipe",
"PGM pipe format",
static AVInputFormat imagepipe_iformat = {
"imagepipe",
"piped image sequence",
sizeof(VideoData),
NULL, /* no probe */
img_read_header,
......@@ -869,108 +329,46 @@ static AVInputFormat pgmpipe_iformat = {
NULL,
};
static AVOutputFormat pgmpipe_oformat = {
"pgmpipe",
"PGM pipe format",
"",
"pgm",
sizeof(VideoData),
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
};
static AVInputFormat pgmyuvpipe_iformat = {
"pgmyuvpipe",
"PGM YUV pipe format",
sizeof(VideoData),
NULL, /* no probe */
img_read_header,
img_read_packet,
img_read_close,
NULL,
};
/* output */
static AVOutputFormat pgmyuvpipe_oformat = {
"pgmyuvpipe",
"PGM YUV pipe format",
static AVOutputFormat image_oformat = {
"image",
"image sequence",
"",
"pgm",
sizeof(VideoData),
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
};
static AVInputFormat ppmpipe_iformat = {
"ppmpipe",
"PPM pipe format",
sizeof(VideoData),
NULL, /* no probe */
img_read_header,
img_read_packet,
img_read_close,
NULL,
.flags = AVFMT_RGB24,
};
static AVOutputFormat ppmpipe_oformat = {
"ppmpipe",
"PPM pipe format",
"",
"ppm",
sizeof(VideoData),
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
.flags = AVFMT_RGB24,
AVFMT_NOFILE | AVFMT_NEEDNUMBER | AVFMT_RAWPICTURE,
img_set_parameters,
};
static AVOutputFormat yuv4mpegpipe_oformat = {
"yuv4mpegpipe",
"YUV4MPEG pipe format",
static AVOutputFormat imagepipe_oformat = {
"imagepipe",
"piped image sequence",
"",
"",
"yuv4mpeg",
sizeof(VideoData),
CODEC_ID_NONE,
CODEC_ID_RAWVIDEO,
img_write_header,
img_write_packet,
img_write_trailer,
AVFMT_NEEDNUMBER | AVFMT_RAWPICTURE,
img_set_parameters,
};
int img_init(void)
{
av_register_input_format(&pgm_iformat);
av_register_output_format(&pgm_oformat);
av_register_input_format(&pgmyuv_iformat);
av_register_output_format(&pgmyuv_oformat);
av_register_input_format(&ppm_iformat);
av_register_output_format(&ppm_oformat);
av_register_input_format(&imgyuv_iformat);
av_register_output_format(&imgyuv_oformat);
av_register_input_format(&pgmpipe_iformat);
av_register_output_format(&pgmpipe_oformat);
av_register_input_format(&pgmyuvpipe_iformat);
av_register_output_format(&pgmyuvpipe_oformat);
av_register_input_format(&ppmpipe_iformat);
av_register_output_format(&ppmpipe_oformat);
av_register_input_format(&image_iformat);
av_register_output_format(&image_oformat);
av_register_output_format(&yuv4mpegpipe_oformat);
av_register_input_format(&imagepipe_iformat);
av_register_output_format(&imagepipe_oformat);
return 0;
}
libavformat/pnm.c 0 → 100644
View file @ 87a0a681
/*
* PNM image format
* Copyright (c) 2002, 2003 Fabrice Bellard.
*
* This library 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.
*
* This library 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
*/
#include "avformat.h"
static inline int pnm_space(int c)
{
return (c == ' ' || c == '\n' || c == '\r' || c == '\t');
}
static void pnm_get(ByteIOContext *f, char *str, int buf_size)
{
char *s;
int c;
/* skip spaces and comments */
for(;;) {
c = url_fgetc(f);
if (c == '#') {
do {
c = url_fgetc(f);
} while (c != '\n' && c != URL_EOF);
} else if (!pnm_space(c)) {
break;
}
}
s = str;
while (c != URL_EOF && !pnm_space(c)) {
if ((s - str) < buf_size - 1)
*s++ = c;
c = url_fgetc(f);
}
*s = '\0';
}
static int pnm_read1(ByteIOContext *f,
int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque,
int allow_yuv)
{
int i, n, linesize, h;
char buf1[32];
unsigned char *ptr;
AVImageInfo info1, *info = &info1;
int ret;
pnm_get(f, buf1, sizeof(buf1));
if (!strcmp(buf1, "P4")) {
info->pix_fmt = PIX_FMT_MONOWHITE;
} else if (!strcmp(buf1, "P5")) {
if (allow_yuv)
info->pix_fmt = PIX_FMT_YUV420P;
else
info->pix_fmt = PIX_FMT_GRAY8;
} else if (!strcmp(buf1, "P6")) {
info->pix_fmt = PIX_FMT_RGB24;
} else {
return AVERROR_INVALIDDATA;
}
pnm_get(f, buf1, sizeof(buf1));
info->width = atoi(buf1);
if (info->width <= 0)
return AVERROR_INVALIDDATA;
pnm_get(f, buf1, sizeof(buf1));
info->height = atoi(buf1);
if (info->height <= 0)
return AVERROR_INVALIDDATA;
if (info->pix_fmt != PIX_FMT_MONOWHITE) {
pnm_get(f, buf1, sizeof(buf1));
}
/* more check if YUV420 */
if (info->pix_fmt == PIX_FMT_YUV420P) {
if ((info->width & 1) != 0)
return AVERROR_INVALIDDATA;
h = (info->height * 2);
if ((h % 3) != 0)
return AVERROR_INVALIDDATA;
h /= 3;
info->height = h;
}
ret = alloc_cb(opaque, info);
if (ret)
return ret;
switch(info->pix_fmt) {
default:
return AVERROR_INVALIDDATA;
case PIX_FMT_RGB24:
n = info->width * 3;
goto do_read;
case PIX_FMT_GRAY8:
n = info->width;
goto do_read;
case PIX_FMT_MONOWHITE:
n = (info->width + 7) >> 3;
do_read:
ptr = info->pict.data[0];
linesize = info->pict.linesize[0];
for(i = 0; i < info->height; i++) {
get_buffer(f, ptr, n);
ptr += linesize;
}
break;
case PIX_FMT_YUV420P:
{
unsigned char *ptr1, *ptr2;
n = info->width;
ptr = info->pict.data[0];
linesize = info->pict.linesize[0];
for(i = 0; i < info->height; i++) {
get_buffer(f, ptr, n);
ptr += linesize;
}
ptr1 = info->pict.data[1];
ptr2 = info->pict.data[2];
n >>= 1;
h = info->height >> 1;
for(i = 0; i < h; i++) {
get_buffer(f, ptr1, n);
get_buffer(f, ptr2, n);
ptr1 += info->pict.linesize[1];
ptr2 += info->pict.linesize[2];
}
}
break;
}
return 0;
}
static int pnm_read(ByteIOContext *f,
int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque)
{
return pnm_read1(f, alloc_cb, opaque, 0);
}
static int pgmyuv_read(ByteIOContext *f,
int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque)
{
return pnm_read1(f, alloc_cb, opaque, 1);
}
static int pnm_write(ByteIOContext *pb, AVImageInfo *info)
{
int i, h, h1, c, n, linesize;
char buf[100];
UINT8 *ptr, *ptr1, *ptr2;
h = info->height;
h1 = h;
switch(info->pix_fmt) {
case PIX_FMT_MONOWHITE:
c = '4';
n = (info->width + 7) >> 3;
break;
case PIX_FMT_GRAY8:
c = '5';
n = info->width;
break;
case PIX_FMT_RGB24:
c = '6';
n = info->width * 3;
break;
case PIX_FMT_YUV420P:
c = '5';
n = info->width;
h1 = (h * 3) / 2;
break;
default:
return AVERROR_INVALIDDATA;
}
snprintf(buf, sizeof(buf),
"P%c\n%d %d\n",
c, info->width, h1);
put_buffer(pb, buf, strlen(buf));
if (info->pix_fmt != PIX_FMT_MONOWHITE) {
snprintf(buf, sizeof(buf),
"%d\n", 255);
put_buffer(pb, buf, strlen(buf));
}
ptr = info->pict.data[0];
linesize = info->pict.linesize[0];
for(i=0;i<h;i++) {
put_buffer(pb, ptr, n);
ptr += linesize;
}
if (info->pix_fmt == PIX_FMT_YUV420P) {
h >>= 1;
n >>= 1;
ptr1 = info->pict.data[1];
ptr2 = info->pict.data[2];
for(i=0;i<h;i++) {
put_buffer(pb, ptr1, n);
put_buffer(pb, ptr2, n);
ptr1 += info->pict.linesize[1];
ptr2 += info->pict.linesize[2];
}
}
put_flush_packet(pb);
return 0;
}
static int pnm_probe(AVProbeData *pd)
{
const char *p = pd->buf;
if (pd->buf_size >= 8 &&
p[0] == 'P' &&
p[1] >= '4' && p[1] <= '6' &&
p[2] == '\n')
return AVPROBE_SCORE_MAX;
else
return 0;
}
static int pgmyuv_probe(AVProbeData *pd)
{
if (match_ext(pd->filename, "pgmyuv"))
return AVPROBE_SCORE_MAX;
else
return 0;
}
AVImageFormat pnm_image_format = {
"pnm",
NULL,
pnm_probe,
pnm_read,
0,
NULL,
};
AVImageFormat pbm_image_format = {
"pbm",
"pbm",
NULL,
NULL,
(1 << PIX_FMT_MONOWHITE),
pnm_write,
};
AVImageFormat pgm_image_format = {
"pgm",
"pgm",
NULL,
NULL,
(1 << PIX_FMT_GRAY8),
pnm_write,
};
AVImageFormat ppm_image_format = {
"ppm",
"ppm",
NULL,
NULL,
(1 << PIX_FMT_RGB24),
pnm_write,
};
AVImageFormat pgmyuv_image_format = {
"pgmyuv",
NULL,
pgmyuv_probe,
pgmyuv_read,
(1 << PIX_FMT_YUV420P),
pnm_write,
};
libavformat/utils.c
View file @ 87a0a681
......@@ -35,6 +35,7 @@
AVInputFormat *first_iformat;
AVOutputFormat *first_oformat;
AVImageFormat *first_image_format;
void av_register_input_format(AVInputFormat *format)
{
......@@ -84,6 +85,11 @@ AVOutputFormat *guess_format(const char *short_name, const char *filename,
AVOutputFormat *fmt, *fmt_found;
int score_max, score;
/* specific test for image sequences */
if (!short_name && filename && filename_number_test(filename) >= 0) {
return guess_format("image", NULL, NULL);
}
/* find the proper file type */
fmt_found = NULL;
score_max = 0;
......@@ -326,8 +332,8 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
fmt = av_probe_input_format(pd, 0);
}
/* if no file needed do not try to open one */
if (!fmt || !(fmt->flags & AVFMT_NOFILE)) {
/* if no file needed do not try to open one */
if (url_fopen(&ic->pb, filename, URL_RDONLY) < 0) {
err = AVERROR_IO;
goto fail;
......@@ -365,6 +371,14 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
ic->iformat = fmt;
/* check filename in case of an image number is expected */
if (ic->iformat->flags & AVFMT_NEEDNUMBER) {
if (filename_number_test(ic->filename) < 0) {
err = AVERROR_NUMEXPECTED;
goto fail1;
}
}
/* allocate private data */
ic->priv_data = av_mallocz(fmt->priv_data_size);
if (!ic->priv_data) {
......@@ -375,14 +389,6 @@ int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
/* default pts settings is MPEG like */
av_set_pts_info(ic, 33, 1, 90000);
/* check filename in case of an image number is expected */
if (ic->iformat->flags & AVFMT_NEEDNUMBER) {
if (filename_number_test(ic->filename) < 0) {
err = AVERROR_NUMEXPECTED;
goto fail1;
}
}
err = ic->iformat->read_header(ic, ap);
if (err < 0)
goto fail1;
......@@ -707,6 +713,21 @@ AVStream *av_new_stream(AVFormatContext *s, int id)
/************************************************************/
/* output media file */
int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
{
int ret;
s->priv_data = av_mallocz(s->oformat->priv_data_size);
if (!s->priv_data)
return AVERROR_NOMEM;
if (s->oformat->set_parameters) {
ret = s->oformat->set_parameters(s, ap);
if (ret < 0)
return ret;
}
return 0;
}
/**
* allocate the stream private data and write the stream header to an
* output media file
......@@ -719,9 +740,6 @@ int av_write_header(AVFormatContext *s)
int ret, i;
AVStream *st;
s->priv_data = av_mallocz(s->oformat->priv_data_size);
if (!s->priv_data)
return AVERROR_NOMEM;
/* default pts settings is MPEG like */
av_set_pts_info(s, 33, 1, 90000);
ret = s->oformat->write_header(s);
......@@ -1291,3 +1309,88 @@ void av_frac_add(AVFrac *f, INT64 incr)
}
f->num = num;
}
/**
* register a new image format
* @param img_fmt Image format descriptor
*/
void av_register_image_format(AVImageFormat *img_fmt)
{
AVImageFormat **p;
p = &first_image_format;
while (*p != NULL) p = &(*p)->next;
*p = img_fmt;
img_fmt->next = NULL;
}
/* guess image format */
AVImageFormat *av_probe_image_format(AVProbeData *pd)
{
AVImageFormat *fmt1, *fmt;
int score, score_max;
fmt = NULL;
score_max = 0;
for(fmt1 = first_image_format; fmt1 != NULL; fmt1 = fmt1->next) {
if (fmt1->img_probe) {
score = fmt1->img_probe(pd);
if (score > score_max) {
score_max = score;
fmt = fmt1;
}
}
}
return fmt;
}
AVImageFormat *guess_image_format(const char *filename)
{
AVImageFormat *fmt1;
for(fmt1 = first_image_format; fmt1 != NULL; fmt1 = fmt1->next) {
if (fmt1->extensions && match_ext(filename, fmt1->extensions))
return fmt1;
}
return NULL;
}
/**
* Read an image from a stream.
* @param gb byte stream containing the image
* @param fmt image format, NULL if probing is required
*/
int av_read_image(ByteIOContext *pb, const char *filename,
AVImageFormat *fmt,
int (*alloc_cb)(void *, AVImageInfo *info), void *opaque)
{
char buf[PROBE_BUF_SIZE];
AVProbeData probe_data, *pd = &probe_data;
offset_t pos;
int ret;
if (!fmt) {
pd->filename = (char *)filename;
pd->buf = buf;
pos = url_ftell(pb);
pd->buf_size = get_buffer(pb, buf, PROBE_BUF_SIZE);
url_fseek(pb, pos, SEEK_SET);
fmt = av_probe_image_format(pd);
}
if (!fmt)
return AVERROR_NOFMT;
ret = fmt->img_read(pb, alloc_cb, opaque);
return ret;
}
/**
* Write an image to a stream.
* @param pb byte stream for the image output
* @param fmt image format
* @param img image data and informations
*/
int av_write_image(ByteIOContext *pb, AVImageFormat *fmt, AVImageInfo *img)
{
return fmt->img_write(pb, img);
}
libavformat/yuv.c 0 → 100644
View file @ 87a0a681
/*
* .Y.U.V image format
* Copyright (c) 2003 Fabrice Bellard.
*
* This library 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.
*
* This library 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
*/
#include "avformat.h"
static int sizes[][2] = {
{ 640, 480 },
{ 720, 480 },
{ 720, 576 },
{ 352, 288 },
{ 352, 240 },
{ 160, 128 },
{ 512, 384 },
{ 640, 352 },
{ 640, 240 },
};
static int infer_size(int *width_ptr, int *height_ptr, int size)
{
int i;
for(i=0;i<sizeof(sizes)/sizeof(sizes[0]);i++) {
if ((sizes[i][0] * sizes[i][1]) == size) {
*width_ptr = sizes[i][0];
*height_ptr = sizes[i][1];
return 0;
}
}
return -1;
}
static int yuv_read(ByteIOContext *f,
int (*alloc_cb)(void *opaque, AVImageInfo *info), void *opaque)
{
ByteIOContext pb1, *pb = &pb1;
int img_size, ret;
char fname[1024], *p;
int size;
URLContext *h;
AVImageInfo info1, *info = &info1;
/* XXX: hack hack */
h = url_fileno(f);
img_size = url_seek(h, 0, SEEK_END);
url_get_filename(h, fname, sizeof(fname));
if (infer_size(&info->width, &info->height, img_size) < 0) {
return -EIO;
}
info->pix_fmt = PIX_FMT_YUV420P;
ret = alloc_cb(opaque, info);
if (ret)
return ret;
size = info->width * info->height;
p = strrchr(fname, '.');
if (!p || p[1] != 'Y')
return -EIO;
get_buffer(f, info->pict.data[0], size);
p[1] = 'U';
if (url_fopen(pb, fname, URL_RDONLY) < 0)
return -EIO;
get_buffer(pb, info->pict.data[1], size / 4);
url_fclose(pb);
p[1] = 'V';
if (url_fopen(pb, fname, URL_RDONLY) < 0)
return -EIO;
get_buffer(pb, info->pict.data[2], size / 4);
url_fclose(pb);
return 0;
}
static int yuv_write(ByteIOContext *pb2, AVImageInfo *info)
{
ByteIOContext pb1, *pb;
char fname[1024], *p;
int i, j, width, height;
UINT8 *ptr;
URLContext *h;
static const char *ext = "YUV";
/* XXX: hack hack */
h = url_fileno(pb2);
url_get_filename(h, fname, sizeof(fname));
p = strrchr(fname, '.');
if (!p || p[1] != 'Y')
return -EIO;
width = info->width;
height = info->height;
for(i=0;i<3;i++) {
if (i == 1) {
width >>= 1;
height >>= 1;
}
if (i >= 1) {
pb = &pb1;
p[1] = ext[i];
if (url_fopen(pb, fname, URL_WRONLY) < 0)
return -EIO;
} else {
pb = pb2;
}
ptr = info->pict.data[i];
for(j=0;j<height;j++) {
put_buffer(pb, ptr, width);
ptr += info->pict.linesize[i];
}
put_flush_packet(pb);
if (i >= 1) {
url_fclose(pb);
}
}
return 0;
}
static int yuv_probe(AVProbeData *pd)
{
if (match_ext(pd->filename, "Y"))
return AVPROBE_SCORE_MAX;
else
return 0;
}
AVImageFormat yuv_image_format = {
"yuv",
"Y",
yuv_probe,
yuv_read,
(1 << PIX_FMT_YUV420P),
yuv_write,
};
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