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Add a WEBP_NODISCARD

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Change-Id: Ice66f2aa6358474d728fb19c571edc86ed139a49
This commit is contained in:
Vincent Rabaud
2023-11-10 13:57:07 +01:00
parent 24d7f9cb6e
commit 13d9c30b2b
25 changed files with 321 additions and 222 deletions
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22
src/demux/anim_decode.c
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@ -20,6 +20,7 @@
#include "src/utils/utils.h"
#include "src/webp/decode.h"
#include "src/webp/demux.h"
#include "src/webp/types.h"
#define NUM_CHANNELS 4
@ -68,8 +69,9 @@ int WebPAnimDecoderOptionsInitInternal(WebPAnimDecoderOptions* dec_options,
return 1;
}
static int ApplyDecoderOptions(const WebPAnimDecoderOptions* const dec_options,
WebPAnimDecoder* const dec) {
WEBP_NODISCARD static int ApplyDecoderOptions(
const WebPAnimDecoderOptions* const dec_options,
WebPAnimDecoder* const dec) {
WEBP_CSP_MODE mode;
WebPDecoderConfig* config = &dec->config_;
assert(dec_options != NULL);
@ -82,7 +84,9 @@ static int ApplyDecoderOptions(const WebPAnimDecoderOptions* const dec_options,
dec->blend_func_ = (mode == MODE_RGBA || mode == MODE_BGRA)
? &BlendPixelRowNonPremult
: &BlendPixelRowPremult;
WebPInitDecoderConfig(config);
if (!WebPInitDecoderConfig(config)) {
return 0;
}
config->output.colorspace = mode;
config->output.is_external_memory = 1;
config->options.use_threads = dec_options->use_threads;
@ -157,8 +161,8 @@ static int IsFullFrame(int width, int height, int canvas_width,
}
// Clear the canvas to transparent.
static int ZeroFillCanvas(uint8_t* buf, uint32_t canvas_width,
uint32_t canvas_height) {
WEBP_NODISCARD static int ZeroFillCanvas(uint8_t* buf, uint32_t canvas_width,
uint32_t canvas_height) {
const uint64_t size =
(uint64_t)canvas_width * canvas_height * NUM_CHANNELS * sizeof(*buf);
if (!CheckSizeOverflow(size)) return 0;
@ -179,8 +183,8 @@ static void ZeroFillFrameRect(uint8_t* buf, int buf_stride, int x_offset,
}
// Copy width * height pixels from 'src' to 'dst'.
static int CopyCanvas(const uint8_t* src, uint8_t* dst,
uint32_t width, uint32_t height) {
WEBP_NODISCARD static int CopyCanvas(const uint8_t* src, uint8_t* dst,
uint32_t width, uint32_t height) {
const uint64_t size = (uint64_t)width * height * NUM_CHANNELS;
if (!CheckSizeOverflow(size)) return 0;
assert(src != NULL && dst != NULL);
@ -424,7 +428,9 @@ int WebPAnimDecoderGetNext(WebPAnimDecoder* dec,
WebPDemuxReleaseIterator(&dec->prev_iter_);
dec->prev_iter_ = iter;
dec->prev_frame_was_keyframe_ = is_key_frame;
CopyCanvas(dec->curr_frame_, dec->prev_frame_disposed_, width, height);
if (!CopyCanvas(dec->curr_frame_, dec->prev_frame_disposed_, width, height)) {
goto Error;
}
if (dec->prev_iter_.dispose_method == WEBP_MUX_DISPOSE_BACKGROUND) {
ZeroFillFrameRect(dec->prev_frame_disposed_, width * NUM_CHANNELS,
dec->prev_iter_.x_offset, dec->prev_iter_.y_offset,