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webpmux -info: display dimensions and has_alpha per frame

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Also, more readable dispose and blend methods.

Change-Id: I318431f94dcdee4c5da296a48e6f3762aa254c1f
This commit is contained in:
Urvang Joshi 2013-09-16 15:29:24 -07:00
parent d78a82c407
commit 0e6747f88d
1 changed files with 17 additions and 5 deletions
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22
examples/webpmux.c
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@ -53,6 +53,7 @@
#include <stdio.h> #include <stdio.h>
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include "webp/decode.h"
#include "webp/mux.h" #include "webp/mux.h"
#include "./example_util.h" #include "./example_util.h"
@ -227,17 +228,28 @@ static WebPMuxError DisplayInfo(const WebPMux* mux) {
printf("Number of %ss: %d\n", type_str, nFrames); printf("Number of %ss: %d\n", type_str, nFrames);
if (nFrames > 0) { if (nFrames > 0) {
int i; int i;
printf("No.: x_offset y_offset "); printf("No.: width height alpha x_offset y_offset ");
if (is_anim) printf("duration dispose blend "); if (is_anim) printf("duration dispose blend ");
printf("image_size\n"); printf("image_size\n");
for (i = 1; i <= nFrames; i++) { for (i = 1; i <= nFrames; i++) {
WebPMuxFrameInfo frame; WebPMuxFrameInfo frame;
err = WebPMuxGetFrame(mux, i, &frame); err = WebPMuxGetFrame(mux, i, &frame);
if (err == WEBP_MUX_OK) { if (err == WEBP_MUX_OK) {
printf("%3d: %8d %8d ", i, frame.x_offset, frame.y_offset); WebPBitstreamFeatures features;
const VP8StatusCode status = WebPGetFeatures(
frame.bitstream.bytes, frame.bitstream.size, &features);
assert(status == VP8_STATUS_OK); // Checked by WebPMuxCreate().
(void)status;
printf("%3d: %5d %5d %5s %8d %8d ", i, features.width,
features.height, features.has_alpha ? "yes" : "no",
frame.x_offset, frame.y_offset);
if (is_anim) { if (is_anim) {
printf("%8d %7d %5d", frame.duration, frame.dispose_method, const char* const dispose =
frame.blend_method); (frame.dispose_method == WEBP_MUX_DISPOSE_NONE) ? "none"
: "background";
const char* const blend =
(frame.blend_method == WEBP_MUX_BLEND) ? "yes" : "no";
printf("%8d %10s %5s ", frame.duration, dispose, blend);
} }
printf("%10d\n", (int)frame.bitstream.size); printf("%10d\n", (int)frame.bitstream.size);
} }