postproc.GUID = 65E33355-F35E-4088-884D-3FD4905881D7
postproc.DESCRIPTION = Decoder postprocessor control
GEN_EXAMPLES-$(CONFIG_VP8_DECODER) += decode_to_md5.c
-decode_to_md5.SRCS += md5_utils.h md5_utils.c
-decode_to_md5.GUID = 59120B9B-2735-4BFE-B022-146CA340FE42
-decode_to_md5.DESCRIPTION = Frame by frame MD5 checksum
+decode_to_md5.SRCS += md5_utils.h md5_utils.c
+decode_to_md5.SRCS += ivfdec.h ivfdec.c
+decode_to_md5.SRCS += tools_common.h tools_common.c
+decode_to_md5.GUID = 59120B9B-2735-4BFE-B022-146CA340FE42
+decode_to_md5.DESCRIPTION = Frame by frame MD5 checksum
GEN_EXAMPLES-$(CONFIG_VP8_ENCODER) += simple_encoder.c
simple_encoder.GUID = 4607D299-8A71-4D2C-9B1D-071899B6FBFD
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
+
#define VPX_CODEC_DISABLE_COMPAT 1
-#include "./vpx_config.h"
+
#include "vpx/vp8dx.h"
#include "vpx/vpx_decoder.h"
-#include "md5_utils.h"
+
+#include "./ivfdec.h"
+#include "./md5_utils.h"
+#include "./tools_common.h"
+#include "./vpx_config.h"
#define VP8_FOURCC 0x30385056
#define VP9_FOURCC 0x30395056
-#define IVF_FILE_HDR_SZ (32)
-#define IVF_FRAME_HDR_SZ (12)
-
static vpx_codec_iface_t *get_codec_interface(unsigned int fourcc) {
switch (fourcc) {
case VP8_FOURCC:
return NULL;
}
-static unsigned int mem_get_le32(const unsigned char *mem) {
- return (mem[3] << 24) | (mem[2] << 16) | (mem[1] << 8) | (mem[0]);
-}
-
-static void die(const char *fmt, ...) {
- va_list ap;
-
- va_start(ap, fmt);
- vprintf(fmt, ap);
- if (fmt[strlen(fmt) - 1] != '\n')
- printf("\n");
- exit(EXIT_FAILURE);
-}
-
static void die_codec(vpx_codec_ctx_t *ctx, const char *s) {
const char *detail = vpx_codec_error_detail(ctx);
fprintf(stream, "%02x", digest[i]);
}
+static const char *exec_name;
+
+void usage_exit() {
+ fprintf(stderr, "Usage: %s <infile> <outfile>\n", exec_name);
+ exit(EXIT_FAILURE);
+}
+
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];
+ vpx_video_t *video;
+
+ exec_name = argv[0];
if (argc != 3)
- die("Usage: %s <infile> <outfile>\n", argv[0]);
+ die("Invalid number of arguments");
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'))
+ video = vpx_video_open_file(infile);
+ if (!video)
die("%s is not an IVF file.", argv[1]);
- iface = get_codec_interface(mem_get_le32(file_hdr + 8));
+ iface = get_codec_interface(vpx_video_get_fourcc(video));
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);
+ while (vpx_video_read_frame(video)) {
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");
-
+ vpx_image_t *img = NULL;
+ size_t frame_size = 0;
+ const unsigned char *frame = vpx_video_get_frame(video, &frame_size);
if (vpx_codec_decode(&codec, frame, frame_size, NULL, 0))
die_codec(&codec, "Failed to decode frame");
if (vpx_codec_destroy(&codec))
die_codec(&codec, "Failed to destroy codec");
+ vpx_video_close(video);
+
fclose(outfile);
fclose(infile);
return EXIT_SUCCESS;
* be found in the AUTHORS file in the root of the source tree.
*/
-#include "./ivfdec.h"
-
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
+
+#include "./ivfdec.h"
+
+static const char *IVF_SIGNATURE = "DKIF";
static void fix_framerate(int *num, int *den) {
// Some versions of vpxenc used 1/(2*fps) for the timebase, so
int is_ivf = 0;
if (fread(raw_hdr, 1, 32, input_ctx->file) == 32) {
- if (raw_hdr[0] == 'D' && raw_hdr[1] == 'K' &&
- raw_hdr[2] == 'I' && raw_hdr[3] == 'F') {
+ if (memcmp(IVF_SIGNATURE, raw_hdr, 4) == 0) {
is_ivf = 1;
if (mem_get_le16(raw_hdr + 4) != 0) {
return 1;
}
+
+struct vpx_video {
+ FILE *file;
+ unsigned char *buffer;
+ size_t buffer_size;
+ size_t frame_size;
+ unsigned int fourcc;
+ int width;
+ int height;
+};
+
+vpx_video_t *vpx_video_open_file(FILE *file) {
+ char raw_hdr[32];
+ vpx_video_t *video;
+
+ if (fread(raw_hdr, 1, 32, file) != 32)
+ return NULL; // Can't read file header;
+
+ if (memcmp(IVF_SIGNATURE, raw_hdr, 4) != 0)
+ return NULL; // Wrong IVF signature
+
+ if (mem_get_le16(raw_hdr + 4) != 0)
+ return NULL; // Wrong IVF version
+
+ video = (vpx_video_t *)malloc(sizeof(*video));
+ video->file = file;
+ video->buffer = NULL;
+ video->buffer_size = 0;
+ video->frame_size = 0;
+ video->fourcc = mem_get_le32(raw_hdr + 8);
+ video->width = mem_get_le16(raw_hdr + 12);
+ video->height = mem_get_le16(raw_hdr + 14);
+ return video;
+}
+
+void vpx_video_close(vpx_video_t *video) {
+ if (video) {
+ free(video->buffer);
+ free(video);
+ }
+}
+
+int vpx_video_get_width(vpx_video_t *video) {
+ return video->width;
+}
+
+int vpx_video_get_height(vpx_video_t *video) {
+ return video->height;
+}
+
+unsigned int vpx_video_get_fourcc(vpx_video_t *video) {
+ return video->fourcc;
+}
+
+int vpx_video_read_frame(vpx_video_t *video) {
+ return !ivf_read_frame(video->file, &video->buffer, &video->frame_size,
+ &video->buffer_size);
+}
+
+const unsigned char *vpx_video_get_frame(vpx_video_t *video, size_t *size) {
+ if (size)
+ *size = video->frame_size;
+
+ return video->buffer;
+}
int ivf_read_frame(FILE *infile, uint8_t **buffer,
size_t *bytes_read, size_t *buffer_size);
+// The following code is work in progress. It is going to be in a separate file
+// and support transparent reading of IVF and Y4M formats. Right now only IVF
+// format is supported for simplicity. The main goal the API is to be
+// simple and easy to use in example code (and probably in vpxenc/vpxdec later).
+// All low-level details like memory buffer management are hidden from API
+// users.
+struct vpx_video;
+typedef struct vpx_video vpx_video_t;
+
+// Opens the input file and inspects it to determine file type. Returns an
+// opaque vpx_video_t* upon success, or NULL upon failure.
+vpx_video_t *vpx_video_open_file(FILE *file);
+
+// Frees all resources associated with vpx_video_t returned from
+// vpx_video_open_file() call
+void vpx_video_close(vpx_video_t *video);
+
+int vpx_video_get_width(vpx_video_t *video);
+int vpx_video_get_height(vpx_video_t *video);
+unsigned int vpx_video_get_fourcc(vpx_video_t *video);
+
+// Reads video frame bytes from the file and stores them into internal buffer.
+int vpx_video_read_frame(vpx_video_t *video);
+
+// Returns the pointer to internal memory buffer with frame bytes read from
+// last call to vpx_video_read_frame().
+const unsigned char *vpx_video_get_frame(vpx_video_t *video, size_t *size);
+
#ifdef __cplusplus
} /* extern "C" */
#endif
projects / platform / upstream / libvpx.git / commitdiff