int file_is_ivf(struct VpxInputContext *input_ctx) {
char raw_hdr[32];
int is_ivf = 0;
if (fread(raw_hdr, 1, 32, input_ctx->file) == 32) {
if (memcmp(IVF_SIGNATURE, raw_hdr, 4) == 0) {
is_ivf = 1;
if (mem_get_le16(raw_hdr + 4) != 0) {
fprintf(stderr, "Error: Unrecognized IVF version! This file may not"
" decode properly.");
}
input_ctx->fourcc = mem_get_le32(raw_hdr + 8);
input_ctx->width = mem_get_le16(raw_hdr + 12);
input_ctx->height = mem_get_le16(raw_hdr + 14);
input_ctx->framerate.numerator = mem_get_le32(raw_hdr + 16);
input_ctx->framerate.denominator = mem_get_le32(raw_hdr + 20);
fix_framerate(&input_ctx->framerate.numerator,
&input_ctx->framerate.denominator);
}
}
if (!is_ivf) {
rewind(input_ctx->file);
input_ctx->detect.buf_read = 0;
} else {
input_ctx->detect.position = 4;
}
return is_ivf;
}
unsigned int file_is_ivf(FILE *infile,
unsigned int *fourcc,
unsigned int *width,
unsigned int *height,
unsigned int *fps_den,
unsigned int *fps_num) {
char raw_hdr[32];
int is_ivf = 0;
if (fread(raw_hdr, 1, 32, infile) == 32) {
if (raw_hdr[0] == 'D' && raw_hdr[1] == 'K'
&& raw_hdr[2] == 'I' && raw_hdr[3] == 'F') {
is_ivf = 1;
if (mem_get_le16(raw_hdr + 4) != 0)
fprintf(stderr, "Error: Unrecognized IVF version! This file may not"
" decode properly.");
*fourcc = mem_get_le32(raw_hdr + 8);
*width = mem_get_le16(raw_hdr + 12);
*height = mem_get_le16(raw_hdr + 14);
*fps_num = mem_get_le32(raw_hdr + 16);
*fps_den = mem_get_le32(raw_hdr + 20);
if (*fps_num < 1000) {
if (*fps_num & 1)*fps_den <<= 1;
else *fps_num >>= 1;
} else {
*fps_num = 30;
*fps_den = 1;
}
}
VpxVideoReader *vpx_video_reader_open(const char *filename) {
char header[32];
VpxVideoReader *reader = NULL;
FILE *const file = fopen(filename, "rb");
if (!file) return NULL; // Can't open file
if (fread(header, 1, 32, file) != 32) return NULL; // Can't read file header
if (memcmp(kIVFSignature, header, 4) != 0)
return NULL; // Wrong IVF signature
if (mem_get_le16(header + 4) != 0) return NULL; // Wrong IVF version
reader = calloc(1, sizeof(*reader));
if (!reader) return NULL; // Can't allocate VpxVideoReader
reader->file = file;
reader->info.codec_fourcc = mem_get_le32(header + 8);
reader->info.frame_width = mem_get_le16(header + 12);
reader->info.frame_height = mem_get_le16(header + 14);
reader->info.time_base.numerator = mem_get_le32(header + 16);
reader->info.time_base.denominator = mem_get_le32(header + 20);
return reader;
}
int file_is_raw(struct VpxInputContext *input) {
uint8_t buf[32];
int is_raw = 0;
vpx_codec_stream_info_t si;
si.sz = sizeof(si);
if (fread(buf, 1, 32, input->file) == 32) {
int i;
if (mem_get_le32(buf) < 256 * 1024 * 1024) {
for (i = 0; i < get_vpx_decoder_count(); ++i) {
const VpxInterface *const decoder = get_vpx_decoder_by_index(i);
if (!vpx_codec_peek_stream_info(decoder->interface(),
buf + 4, 32 - 4, &si)) {
is_raw = 1;
input->fourcc = decoder->fourcc;
input->width = si.w;
input->height = si.h;
input->framerate.numerator = 30;
input->framerate.denominator = 1;
break;
}
}
}
}
rewind(input->file);
return is_raw;
}
static int
is_raw (OMX_U8 * p_buf, unsigned int *fourcc, unsigned int *width,
unsigned int *height, unsigned int *fps_den, unsigned int *fps_num)
{
unsigned char buf[32];
vpx_codec_stream_info_t si;
int i = 0;
int is_raw = 0;
si.sz = sizeof (si);
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;
}
return is_raw;
}
int file_is_raw(struct VpxInputContext *input) {
uint8_t buf[32];
int is_raw = 0;
vpx_codec_stream_info_t si;
si.sz = sizeof(si);
if (fread(buf, 1, 32, input->file) == 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;
input->fourcc = ifaces[i].fourcc;
input->width = si.w;
input->height = si.h;
input->framerate.numerator = 30;
input->framerate.denominator = 1;
break;
}
}
}
}
rewind(input->file);
return is_raw;
}
unsigned int file_is_ivf(FILE *infile,
unsigned int *fourcc,
unsigned int *width,
unsigned int *height,
unsigned int *fps_den,
unsigned int *fps_num) {
char raw_hdr[32];
int is_ivf = 0;
if (fread(raw_hdr, 1, 32, infile) == 32) {
if (raw_hdr[0] == 'D' && raw_hdr[1] == 'K'
&& raw_hdr[2] == 'I' && raw_hdr[3] == 'F') {
is_ivf = 1;
if (mem_get_le16(raw_hdr + 4) != 0)
fprintf(stderr, "Error: Unrecognized IVF version! This file may not"
" decode properly.");
*fourcc = mem_get_le32(raw_hdr + 8);
*width = mem_get_le16(raw_hdr + 12);
*height = mem_get_le16(raw_hdr + 14);
*fps_num = mem_get_le32(raw_hdr + 16);
*fps_den = mem_get_le32(raw_hdr + 20);
/* Some versions of vpxenc used 1/(2*fps) for the timebase, so
* we can guess the framerate using only the timebase in this
* case. Other files would require reading ahead to guess the
* timebase, like we do for webm.
*/
if (*fps_num < 1000) {
/* Correct for the factor of 2 applied to the timebase in the
* encoder.
*/
if (*fps_num & 1)*fps_den <<= 1;
else *fps_num >>= 1;
} else {
/* Don't know FPS for sure, and don't have readahead code
* (yet?), so just default to 30fps.
*/
*fps_num = 30;
*fps_den = 1;
}
}
static int
is_ivf (OMX_U8 * p_buf, unsigned int *fourcc, unsigned int *width,
unsigned int *height, unsigned int *fps_den, unsigned int *fps_num)
{
int is_ivf = 0;
if (p_buf[0] == 'D' && p_buf[1] == 'K'
&& p_buf[2] == 'I' && p_buf[3] == 'F')
{
is_ivf = 1;
if (mem_get_le16 (p_buf + 4) != 0)
fprintf (stderr, "Error: Unrecognized IVF version! This file may not"
" decode properly.");
*fourcc = mem_get_le32 (p_buf + 8);
*width = mem_get_le16 (p_buf + 12);
*height = mem_get_le16 (p_buf + 14);
*fps_num = mem_get_le32 (p_buf + 16);
*fps_den = mem_get_le32 (p_buf + 20);
/* Some versions of vpxenc used 1/(2*fps) for the timebase, so
* we can guess the framerate using only the timebase in this
* case. Other files would require reading ahead to guess the
* timebase, like we do for webm.
*/
if (*fps_num < 1000)
{
/* Correct for the factor of 2 applied to the timebase in the
* encoder.
*/
if (*fps_num & 1)
*fps_den <<= 1;
else
*fps_num >>= 1;
}
else
{
static int raw_read_frame(FILE *infile, uint8_t **buffer,
size_t *bytes_read, size_t *buffer_size) {
char raw_hdr[RAW_FRAME_HDR_SZ];
size_t frame_size = 0;
if (fread(raw_hdr, RAW_FRAME_HDR_SZ, 1, infile) != 1) {
if (!feof(infile))
warn("Failed to read RAW frame size\n");
} else {
const size_t kCorruptFrameThreshold = 256 * 1024 * 1024;
const size_t kFrameTooSmallThreshold = 256 * 1024;
frame_size = mem_get_le32(raw_hdr);
if (frame_size > kCorruptFrameThreshold) {
warn("Read invalid frame size (%u)\n", (unsigned int)frame_size);
frame_size = 0;
}
if (frame_size < kFrameTooSmallThreshold) {
warn("Warning: Read invalid frame size (%u) - not a raw file?\n",
(unsigned int)frame_size);
}
if (frame_size > *buffer_size) {
uint8_t *new_buf = realloc(*buffer, 2 * frame_size);
if (new_buf) {
*buffer = new_buf;
*buffer_size = 2 * frame_size;
} else {
warn("Failed to allocate compressed data buffer\n");
frame_size = 0;
}
}
}
if (!feof(infile)) {
if (fread(*buffer, 1, frame_size, infile) != frame_size) {
warn("Failed to read full frame\n");
return 1;
}
*bytes_read = frame_size;
}
return 0;
}
int ivf_read_frame(FILE *infile, uint8_t **buffer,
size_t *bytes_read, size_t *buffer_size) {
char raw_header[IVF_FRAME_HDR_SZ] = {0};
size_t frame_size = 0;
if (fread(raw_header, IVF_FRAME_HDR_SZ, 1, infile) != 1) {
if (!feof(infile))
warn("Failed to read frame size\n");
} else {
frame_size = mem_get_le32(raw_header);
if (frame_size > 256 * 1024 * 1024) {
warn("Read invalid frame size (%u)\n", (unsigned int)frame_size);
frame_size = 0;
}
if (frame_size > *buffer_size) {
uint8_t *new_buffer = realloc(*buffer, 2 * frame_size);
if (new_buffer) {
*buffer = new_buffer;
*buffer_size = 2 * frame_size;
} else {
warn("Failed to allocate compressed data buffer\n");
frame_size = 0;
}
}
}
if (!feof(infile)) {
if (fread(*buffer, 1, frame_size, infile) != frame_size) {
warn("Failed to read full frame\n");
return 1;
}
*bytes_read = frame_size;
return 0;
}
return 1;
}
unsigned int file_is_ivf(FILE *infile,
unsigned int *fourcc,
unsigned int *width,
unsigned int *height,
char detect[4])
{
char raw_hdr[IVF_FILE_HDR_SZ];
int is_ivf = 0;
if(memcmp(detect, "DKIF", 4) != 0)
return 0;
/* See write_ivf_file_header() for more documentation on the file header
* layout.
*/
if (fread(raw_hdr + 4, 1, IVF_FILE_HDR_SZ - 4, infile)
== IVF_FILE_HDR_SZ - 4)
{
{
is_ivf = 1;
if (mem_get_le16(raw_hdr + 4) != 0)
fprintf(stderr, "Error: Unrecognized IVF version! This file may not"
" decode properly.");
*fourcc = mem_get_le32(raw_hdr + 8);
}
}
if (is_ivf)
{
*width = mem_get_le16(raw_hdr + 12);
*height = mem_get_le16(raw_hdr + 14);
}
return is_ivf;
}
static int read_frame(struct input_ctx *input,
uint8_t **buf,
size_t *buf_sz,
size_t *buf_alloc_sz) {
char raw_hdr[IVF_FRAME_HDR_SZ];
size_t new_buf_sz;
FILE *infile = input->infile;
enum file_kind kind = input->kind;
if (kind == WEBM_FILE) {
if (input->chunk >= input->chunks) {
unsigned int track;
do {
/* End of this packet, get another. */
if (input->pkt)
nestegg_free_packet(input->pkt);
if (nestegg_read_packet(input->nestegg_ctx, &input->pkt) <= 0
|| nestegg_packet_track(input->pkt, &track))
return 1;
} while (track != input->video_track);
if (nestegg_packet_count(input->pkt, &input->chunks))
return 1;
input->chunk = 0;
}
if (nestegg_packet_data(input->pkt, input->chunk, buf, buf_sz))
return 1;
input->chunk++;
return 0;
}
/* For both the raw and ivf formats, the frame size is the first 4 bytes
* of the frame header. We just need to special case on the header
* size.
*/
else if (fread(raw_hdr, kind == IVF_FILE
? IVF_FRAME_HDR_SZ : RAW_FRAME_HDR_SZ, 1, infile) != 1) {
if (!feof(infile))
fprintf(stderr, "Failed to read frame size\n");
new_buf_sz = 0;
} else {
new_buf_sz = mem_get_le32(raw_hdr);
if (new_buf_sz > 256 * 1024 * 1024) {
fprintf(stderr, "Error: Read invalid frame size (%u)\n",
(unsigned int)new_buf_sz);
new_buf_sz = 0;
}
if (kind == RAW_FILE && new_buf_sz > 256 * 1024)
fprintf(stderr, "Warning: Read invalid frame size (%u)"
" - not a raw file?\n", (unsigned int)new_buf_sz);
if (new_buf_sz > *buf_alloc_sz) {
uint8_t *new_buf = realloc(*buf, 2 * new_buf_sz);
if (new_buf) {
*buf = new_buf;
*buf_alloc_sz = 2 * new_buf_sz;
} else {
fprintf(stderr, "Failed to allocate compressed data buffer\n");
new_buf_sz = 0;
}
}
}
*buf_sz = new_buf_sz;
if (!feof(infile)) {
if (fread(*buf, 1, *buf_sz, infile) != *buf_sz) {
fprintf(stderr, "Failed to read full frame\n");
return 1;
}
return 0;
}
return 1;
}
int main(int argc, char **argv) {
FILE *infile, *outfile;
vpx_codec_ctx_t codec;
vpx_codec_iface_t *iface;
int flags = 0, frame_cnt = 0;
unsigned char file_hdr[IVF_FILE_HDR_SZ];
unsigned char frame_hdr[IVF_FRAME_HDR_SZ];
unsigned char frame[256 * 1024];
if (argc != 3)
die("Usage: %s <infile> <outfile>\n", argv[0]);
if (!(infile = fopen(argv[1], "rb")))
die("Failed to open %s for reading", argv[1]);
if (!(outfile = fopen(argv[2], "wb")))
die("Failed to open %s for writing", argv[2]);
if (!(fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile) == IVF_FILE_HDR_SZ &&
file_hdr[0] == 'D' && file_hdr[1] == 'K' &&
file_hdr[2] == 'I' && file_hdr[3] == 'F'))
die("%s is not an IVF file.", argv[1]);
iface = get_codec_interface(mem_get_le32(file_hdr + 8));
if (!iface)
die("Unknown FOURCC code.");
printf("Using %s\n", vpx_codec_iface_name(iface));
if (vpx_codec_dec_init(&codec, iface, NULL, flags))
die_codec(&codec, "Failed to initialize decoder");
while (fread(frame_hdr, 1, IVF_FRAME_HDR_SZ, infile) == IVF_FRAME_HDR_SZ) {
const int frame_size = mem_get_le32(frame_hdr);
vpx_codec_iter_t iter = NULL;
vpx_image_t *img;
if (frame_size > sizeof(frame))
die("Frame %d data too big for example code buffer", frame_size);
if (fread(frame, 1, frame_size, infile) != frame_size)
die("Failed to read complete frame");
if (vpx_codec_decode(&codec, frame, frame_size, NULL, 0))
die_codec(&codec, "Failed to decode frame");
while ((img = vpx_codec_get_frame(&codec, &iter)) != NULL) {
unsigned char digest[16];
get_image_md5(img, digest);
print_md5(outfile, digest);
fprintf(outfile, " img-%dx%d-%04d.i420\n",
img->d_w, img->d_h, ++frame_cnt);
}
}
printf("Processed %d frames.\n", frame_cnt);
if (vpx_codec_destroy(&codec))
die_codec(&codec, "Failed to destroy codec");
fclose(outfile);
fclose(infile);
return EXIT_SUCCESS;
}
int main(int argc, char **argv) {
FILE *infile, *outfile;
vpx_codec_ctx_t codec;
int flags = 0, frame_cnt = 0;
unsigned char file_hdr[IVF_FILE_HDR_SZ];
unsigned char frame_hdr[IVF_FRAME_HDR_SZ];
unsigned char frame[256*1024];
vpx_codec_err_t res;
int n, m, is_range; //
(void)res;
/* Open files */
if(argc!=4) //
die("Usage: %s <infile> <outfile> <N-M|N/M>\n", argv[0]); //
{ //
char *nptr; //
n = strtol(argv[3], &nptr, 0); //
m = strtol(nptr+1, NULL, 0); //
is_range = *nptr == '-'; //
if(!n || !m || (*nptr != '-' && *nptr != '/')) //
die("Couldn't parse pattern %s\n", argv[3]); //
} //
if(!(infile = fopen(argv[1], "rb")))
die("Failed to open %s for reading", argv[1]);
if(!(outfile = fopen(argv[2], "wb")))
die("Failed to open %s for writing", argv[2]);
/* Read file header */
if(!(fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile) == IVF_FILE_HDR_SZ
&& file_hdr[0]=='D' && file_hdr[1]=='K' && file_hdr[2]=='I'
&& file_hdr[3]=='F'))
die("%s is not an IVF file.", argv[1]);
printf("Using %s\n",vpx_codec_iface_name(interface));
/* Initialize codec */
if(vpx_codec_dec_init(&codec, interface, NULL, flags))
die_codec(&codec, "Failed to initialize decoder");
/* Read each frame */
while(fread(frame_hdr, 1, IVF_FRAME_HDR_SZ, infile) == IVF_FRAME_HDR_SZ) {
int frame_sz = mem_get_le32(frame_hdr);
vpx_codec_iter_t iter = NULL;
vpx_image_t *img;
frame_cnt++;
if(frame_sz > sizeof(frame))
die("Frame %d data too big for example code buffer", frame_sz);
if(fread(frame, 1, frame_sz, infile) != frame_sz)
die("Frame %d failed to read complete frame", frame_cnt);
if((is_range && frame_cnt >= n && frame_cnt <= m) //
||(!is_range && m - (frame_cnt-1)%m <= n)) { //
putc('X', stdout); //
continue; //
} //
putc('.', stdout); //
fflush(stdout); //
/* Decode the frame */
if(vpx_codec_decode(&codec, frame, frame_sz, NULL, 0))
die_codec(&codec, "Failed to decode frame");
/* Write decoded data to disk */
while((img = vpx_codec_get_frame(&codec, &iter))) {
unsigned int plane, y;
for(plane=0; plane < 3; plane++) {
unsigned char *buf =img->planes[plane];
for(y=0; y<img->d_h >> (plane?1:0); y++) {
if(fwrite(buf, 1, img->d_w >> (plane?1:0), outfile));
buf += img->stride[plane];
}
}
}
}
printf("Processed %d frames.\n",frame_cnt);
if(vpx_codec_destroy(&codec))
die_codec(&codec, "Failed to destroy codec");
fclose(outfile);
fclose(infile);
return EXIT_SUCCESS;
}
