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ivfdec: support y4m output from raw input

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The width and height needed to write the Y4M header can be found by
probing the stream with vpx_codec_peek_stream_info(). This also
has the consequence of supporting multiple codecs from raw files
with automatic detections, should we add additional codecs in the
future.

Change-Id: I7522a8f4c7577b6ed9876d744c59cd86d30c6049
This commit is contained in:
John Koleszar 2010-10-20 10:49:12 -04:00
parent ad252daf65
commit cfe3f9173f
1 changed files with 74 additions and 42 deletions
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116
ivfdec.c
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@ -398,6 +398,41 @@ unsigned int file_is_ivf(FILE *infile,
} }
unsigned int file_is_raw(FILE *infile,
unsigned int *fourcc,
unsigned int *width,
unsigned int *height,
unsigned int *fps_den,
unsigned int *fps_num)
{
unsigned char buf[32];
int is_raw = 0;
vpx_codec_stream_info_t si;
if (fread(buf, 1, 32, infile) == 32)
{
int i;
if(mem_get_le32(buf) < 256 * 1024 * 1024)
for (i = 0; i < sizeof(ifaces) / sizeof(ifaces[0]); i++)
if(!vpx_codec_peek_stream_info(ifaces[i].iface,
buf + 4, 32 - 4, &si))
{
is_raw = 1;
*fourcc = ifaces[i].fourcc;
*width = si.w;
*height = si.h;
*fps_num = 30;
*fps_den = 1;
break;
}
}
rewind(infile);
return is_raw;
}
static int static int
nestegg_read_cb(void *buffer, size_t length, void *userdata) nestegg_read_cb(void *buffer, size_t length, void *userdata)
{ {
@ -686,54 +721,51 @@ int main(int argc, const char **argv_)
if(file_is_ivf(infile, &fourcc, &width, &height, &fps_den, if(file_is_ivf(infile, &fourcc, &width, &height, &fps_den,
&fps_num)) &fps_num))
input.kind = IVF_FILE; input.kind = IVF_FILE;
else if(file_is_webm(&input, &fourcc, &width, &height, &fps_den, &fps_num)) else if(file_is_webm(&input, &fourcc, &width, &height, &fps_den, &fps_num))
input.kind = WEBM_FILE; input.kind = WEBM_FILE;
else else if(file_is_raw(infile, &fourcc, &width, &height, &fps_den, &fps_num))
input.kind = RAW_FILE; input.kind = RAW_FILE;
else
if (input.kind != RAW_FILE)
{ {
if (use_y4m) fprintf(stderr, "Unrecognized input file type.\n");
{
char buffer[128];
if (!fn2)
{
fprintf(stderr, "YUV4MPEG2 output only supported with -o.\n");
return EXIT_FAILURE;
}
if(input.kind == WEBM_FILE)
webm_guess_framerate(&input, &fps_den, &fps_num);
/*Note: We can't output an aspect ratio here because IVF doesn't
store one, and neither does VP8.
That will have to wait until these tools support WebM natively.*/
sprintf(buffer, "YUV4MPEG2 C%s W%u H%u F%u:%u I%c\n",
"420jpeg", width, height, fps_num, fps_den, 'p');
out_put(out, (unsigned char *)buffer, strlen(buffer), do_md5);
}
/* Try to determine the codec from the fourcc. */
for (i = 0; i < sizeof(ifaces) / sizeof(ifaces[0]); i++)
if ((fourcc & ifaces[i].fourcc_mask) == ifaces[i].fourcc)
{
vpx_codec_iface_t *ivf_iface = ifaces[i].iface;
if (iface && iface != ivf_iface)
fprintf(stderr, "Notice -- IVF header indicates codec: %s\n",
ifaces[i].name);
else
iface = ivf_iface;
break;
}
}
else if(use_y4m)
{
fprintf(stderr, "YUV4MPEG2 output not supported from raw input.\n");
return EXIT_FAILURE; return EXIT_FAILURE;
} }
if (use_y4m)
{
char buffer[128];
if (!fn2)
{
fprintf(stderr, "YUV4MPEG2 output only supported with -o.\n");
return EXIT_FAILURE;
}
if(input.kind == WEBM_FILE)
webm_guess_framerate(&input, &fps_den, &fps_num);
/*Note: We can't output an aspect ratio here because IVF doesn't
store one, and neither does VP8.
That will have to wait until these tools support WebM natively.*/
sprintf(buffer, "YUV4MPEG2 C%s W%u H%u F%u:%u I%c\n",
"420jpeg", width, height, fps_num, fps_den, 'p');
out_put(out, (unsigned char *)buffer, strlen(buffer), do_md5);
}
/* Try to determine the codec from the fourcc. */
for (i = 0; i < sizeof(ifaces) / sizeof(ifaces[0]); i++)
if ((fourcc & ifaces[i].fourcc_mask) == ifaces[i].fourcc)
{
vpx_codec_iface_t *ivf_iface = ifaces[i].iface;
if (iface && iface != ivf_iface)
fprintf(stderr, "Notice -- IVF header indicates codec: %s\n",
ifaces[i].name);
else
iface = ivf_iface;
break;
}
if (vpx_codec_dec_init(&decoder, iface ? iface : ifaces[0].iface, &cfg, if (vpx_codec_dec_init(&decoder, iface ? iface : ifaces[0].iface, &cfg,
postproc ? VPX_CODEC_USE_POSTPROC : 0)) postproc ? VPX_CODEC_USE_POSTPROC : 0))
{ {