summaryrefslogtreecommitdiffstats
path: root/media/libwebp/dec
diff options
context:
space:
mode:
Diffstat (limited to 'media/libwebp/dec')
-rw-r--r--media/libwebp/dec/alpha_dec.c6
-rw-r--r--media/libwebp/dec/alphai_dec.h8
-rw-r--r--media/libwebp/dec/buffer_dec.c52
-rw-r--r--media/libwebp/dec/common_dec.h6
-rw-r--r--media/libwebp/dec/frame_dec.c26
-rw-r--r--media/libwebp/dec/idec_dec.c18
-rw-r--r--media/libwebp/dec/io_dec.c16
-rw-r--r--media/libwebp/dec/quant_dec.c2
-rw-r--r--media/libwebp/dec/tree_dec.c16
-rw-r--r--media/libwebp/dec/vp8_dec.c10
-rw-r--r--media/libwebp/dec/vp8_dec.h16
-rw-r--r--media/libwebp/dec/vp8i_dec.h15
-rw-r--r--media/libwebp/dec/vp8l_dec.c182
-rw-r--r--media/libwebp/dec/vp8li_dec.h8
-rw-r--r--media/libwebp/dec/webp_dec.c10
-rw-r--r--media/libwebp/dec/webpi_dec.h8
16 files changed, 233 insertions, 166 deletions
diff --git a/media/libwebp/dec/alpha_dec.c b/media/libwebp/dec/alpha_dec.c
index 83ffd4b60..1ff7c62d8 100644
--- a/media/libwebp/dec/alpha_dec.c
+++ b/media/libwebp/dec/alpha_dec.c
@@ -12,9 +12,9 @@
// Author: Skal (pascal.massimino@gmail.com)
#include <stdlib.h>
-#include "./alphai_dec.h"
-#include "./vp8i_dec.h"
-#include "./vp8li_dec.h"
+#include "../dec/alphai_dec.h"
+#include "../dec/vp8i_dec.h"
+#include "../dec/vp8li_dec.h"
#include "../dsp/dsp.h"
#include "../utils/quant_levels_dec_utils.h"
#include "../utils/utils.h"
diff --git a/media/libwebp/dec/alphai_dec.h b/media/libwebp/dec/alphai_dec.h
index 561e8151e..3b40691b5 100644
--- a/media/libwebp/dec/alphai_dec.h
+++ b/media/libwebp/dec/alphai_dec.h
@@ -11,10 +11,10 @@
//
// Author: Urvang (urvang@google.com)
-#ifndef WEBP_DEC_ALPHAI_H_
-#define WEBP_DEC_ALPHAI_H_
+#ifndef WEBP_DEC_ALPHAI_DEC_H_
+#define WEBP_DEC_ALPHAI_DEC_H_
-#include "./webpi_dec.h"
+#include "../dec/webpi_dec.h"
#include "../utils/filters_utils.h"
#ifdef __cplusplus
@@ -51,4 +51,4 @@ void WebPDeallocateAlphaMemory(VP8Decoder* const dec);
} // extern "C"
#endif
-#endif /* WEBP_DEC_ALPHAI_H_ */
+#endif /* WEBP_DEC_ALPHAI_DEC_H_ */
diff --git a/media/libwebp/dec/buffer_dec.c b/media/libwebp/dec/buffer_dec.c
index c685fd564..d72d32b0a 100644
--- a/media/libwebp/dec/buffer_dec.c
+++ b/media/libwebp/dec/buffer_dec.c
@@ -13,15 +13,15 @@
#include <stdlib.h>
-#include "./vp8i_dec.h"
-#include "./webpi_dec.h"
+#include "../dec/vp8i_dec.h"
+#include "../dec/webpi_dec.h"
#include "../utils/utils.h"
//------------------------------------------------------------------------------
// WebPDecBuffer
// Number of bytes per pixel for the different color-spaces.
-static const int kModeBpp[MODE_LAST] = {
+static const uint8_t kModeBpp[MODE_LAST] = {
3, 4, 3, 4, 4, 2, 2,
4, 4, 4, 2, // pre-multiplied modes
1, 1 };
@@ -36,7 +36,7 @@ static int IsValidColorspace(int webp_csp_mode) {
// strictly speaking, the very last (or first, if flipped) row
// doesn't require padding.
#define MIN_BUFFER_SIZE(WIDTH, HEIGHT, STRIDE) \
- (uint64_t)(STRIDE) * ((HEIGHT) - 1) + (WIDTH)
+ ((uint64_t)(STRIDE) * ((HEIGHT) - 1) + (WIDTH))
static VP8StatusCode CheckDecBuffer(const WebPDecBuffer* const buffer) {
int ok = 1;
@@ -74,7 +74,8 @@ static VP8StatusCode CheckDecBuffer(const WebPDecBuffer* const buffer) {
} else { // RGB checks
const WebPRGBABuffer* const buf = &buffer->u.RGBA;
const int stride = abs(buf->stride);
- const uint64_t size = MIN_BUFFER_SIZE(width, height, stride);
+ const uint64_t size =
+ MIN_BUFFER_SIZE(width * kModeBpp[mode], height, stride);
ok &= (size <= buf->size);
ok &= (stride >= width * kModeBpp[mode]);
ok &= (buf->rgba != NULL);
@@ -98,9 +99,14 @@ static VP8StatusCode AllocateBuffer(WebPDecBuffer* const buffer) {
uint64_t uv_size = 0, a_size = 0, total_size;
// We need memory and it hasn't been allocated yet.
// => initialize output buffer, now that dimensions are known.
- const int stride = w * kModeBpp[mode];
- const uint64_t size = (uint64_t)stride * h;
+ int stride;
+ uint64_t size;
+ if ((uint64_t)w * kModeBpp[mode] >= (1ull << 32)) {
+ return VP8_STATUS_INVALID_PARAM;
+ }
+ stride = w * kModeBpp[mode];
+ size = (uint64_t)stride * h;
if (!WebPIsRGBMode(mode)) {
uv_stride = (w + 1) / 2;
uv_size = (uint64_t)uv_stride * ((h + 1) / 2);
@@ -169,11 +175,11 @@ VP8StatusCode WebPFlipBuffer(WebPDecBuffer* const buffer) {
return VP8_STATUS_OK;
}
-VP8StatusCode WebPAllocateDecBuffer(int w, int h,
+VP8StatusCode WebPAllocateDecBuffer(int width, int height,
const WebPDecoderOptions* const options,
- WebPDecBuffer* const out) {
+ WebPDecBuffer* const buffer) {
VP8StatusCode status;
- if (out == NULL || w <= 0 || h <= 0) {
+ if (buffer == NULL || width <= 0 || height <= 0) {
return VP8_STATUS_INVALID_PARAM;
}
if (options != NULL) { // First, apply options if there is any.
@@ -182,33 +188,39 @@ VP8StatusCode WebPAllocateDecBuffer(int w, int h,
const int ch = options->crop_height;
const int x = options->crop_left & ~1;
const int y = options->crop_top & ~1;
- if (x < 0 || y < 0 || cw <= 0 || ch <= 0 || x + cw > w || y + ch > h) {
+ if (x < 0 || y < 0 || cw <= 0 || ch <= 0 ||
+ x + cw > width || y + ch > height) {
return VP8_STATUS_INVALID_PARAM; // out of frame boundary.
}
- w = cw;
- h = ch;
+ width = cw;
+ height = ch;
}
+
if (options->use_scaling) {
+#if !defined(WEBP_REDUCE_SIZE)
int scaled_width = options->scaled_width;
int scaled_height = options->scaled_height;
if (!WebPRescalerGetScaledDimensions(
- w, h, &scaled_width, &scaled_height)) {
+ width, height, &scaled_width, &scaled_height)) {
return VP8_STATUS_INVALID_PARAM;
}
- w = scaled_width;
- h = scaled_height;
+ width = scaled_width;
+ height = scaled_height;
+#else
+ return VP8_STATUS_INVALID_PARAM; // rescaling not supported
+#endif
}
}
- out->width = w;
- out->height = h;
+ buffer->width = width;
+ buffer->height = height;
// Then, allocate buffer for real.
- status = AllocateBuffer(out);
+ status = AllocateBuffer(buffer);
if (status != VP8_STATUS_OK) return status;
// Use the stride trick if vertical flip is needed.
if (options != NULL && options->flip) {
- status = WebPFlipBuffer(out);
+ status = WebPFlipBuffer(buffer);
}
return status;
}
diff --git a/media/libwebp/dec/common_dec.h b/media/libwebp/dec/common_dec.h
index 6961e2247..9995f1a51 100644
--- a/media/libwebp/dec/common_dec.h
+++ b/media/libwebp/dec/common_dec.h
@@ -11,8 +11,8 @@
//
// Author: Skal (pascal.massimino@gmail.com)
-#ifndef WEBP_DEC_COMMON_H_
-#define WEBP_DEC_COMMON_H_
+#ifndef WEBP_DEC_COMMON_DEC_H_
+#define WEBP_DEC_COMMON_DEC_H_
// intra prediction modes
enum { B_DC_PRED = 0, // 4x4 modes
@@ -51,4 +51,4 @@ enum { MB_FEATURE_TREE_PROBS = 3,
NUM_PROBAS = 11
};
-#endif // WEBP_DEC_COMMON_H_
+#endif // WEBP_DEC_COMMON_DEC_H_
diff --git a/media/libwebp/dec/frame_dec.c b/media/libwebp/dec/frame_dec.c
index f91e27f7c..57e4d9669 100644
--- a/media/libwebp/dec/frame_dec.c
+++ b/media/libwebp/dec/frame_dec.c
@@ -12,13 +12,13 @@
// Author: Skal (pascal.massimino@gmail.com)
#include <stdlib.h>
-#include "./vp8i_dec.h"
+#include "../dec/vp8i_dec.h"
#include "../utils/utils.h"
//------------------------------------------------------------------------------
// Main reconstruction function.
-static const int kScan[16] = {
+static const uint16_t kScan[16] = {
0 + 0 * BPS, 4 + 0 * BPS, 8 + 0 * BPS, 12 + 0 * BPS,
0 + 4 * BPS, 4 + 4 * BPS, 8 + 4 * BPS, 12 + 4 * BPS,
0 + 8 * BPS, 4 + 8 * BPS, 8 + 8 * BPS, 12 + 8 * BPS,
@@ -320,7 +320,7 @@ static void PrecomputeFilterStrengths(VP8Decoder* const dec) {
#define MIN_DITHER_AMP 4
#define DITHER_AMP_TAB_SIZE 12
-static const int kQuantToDitherAmp[DITHER_AMP_TAB_SIZE] = {
+static const uint8_t kQuantToDitherAmp[DITHER_AMP_TAB_SIZE] = {
// roughly, it's dqm->uv_mat_[1]
8, 7, 6, 4, 4, 2, 2, 2, 1, 1, 1, 1
};
@@ -400,7 +400,9 @@ static void DitherRow(VP8Decoder* const dec) {
#define MACROBLOCK_VPOS(mb_y) ((mb_y) * 16) // vertical position of a MB
// Finalize and transmit a complete row. Return false in case of user-abort.
-static int FinishRow(VP8Decoder* const dec, VP8Io* const io) {
+static int FinishRow(void* arg1, void* arg2) {
+ VP8Decoder* const dec = (VP8Decoder*)arg1;
+ VP8Io* const io = (VP8Io*)arg2;
int ok = 1;
const VP8ThreadContext* const ctx = &dec->thread_ctx_;
const int cache_id = ctx->id_;
@@ -448,10 +450,9 @@ static int FinishRow(VP8Decoder* const dec, VP8Io* const io) {
if (y_end > io->crop_bottom) {
y_end = io->crop_bottom; // make sure we don't overflow on last row.
}
+ // If dec->alpha_data_ is not NULL, we have some alpha plane present.
io->a = NULL;
if (dec->alpha_data_ != NULL && y_start < y_end) {
- // TODO(skal): testing presence of alpha with dec->alpha_data_ is not a
- // good idea.
io->a = VP8DecompressAlphaRows(dec, io, y_start, y_end - y_start);
if (io->a == NULL) {
return VP8SetError(dec, VP8_STATUS_BITSTREAM_ERROR,
@@ -558,7 +559,6 @@ VP8StatusCode VP8EnterCritical(VP8Decoder* const dec, VP8Io* const io) {
if (io->bypass_filtering) {
dec->filter_type_ = 0;
}
- // TODO(skal): filter type / strength / sharpness forcing
// Define the area where we can skip in-loop filtering, in case of cropping.
//
@@ -569,8 +569,6 @@ VP8StatusCode VP8EnterCritical(VP8Decoder* const dec, VP8Io* const io) {
// Means: there's a dependency chain that goes all the way up to the
// top-left corner of the picture (MB #0). We must filter all the previous
// macroblocks.
- // TODO(skal): add an 'approximate_decoding' option, that won't produce
- // a 1:1 bit-exactness for complex filtering?
{
const int extra_pixels = kFilterExtraRows[dec->filter_type_];
if (dec->filter_type_ == 2) {
@@ -651,7 +649,7 @@ static int InitThreadContext(VP8Decoder* const dec) {
}
worker->data1 = dec;
worker->data2 = (void*)&dec->thread_ctx_.io_;
- worker->hook = (WebPWorkerHook)FinishRow;
+ worker->hook = FinishRow;
dec->num_caches_ =
(dec->filter_type_ > 0) ? MT_CACHE_LINES : MT_CACHE_LINES - 1;
} else {
@@ -728,7 +726,7 @@ static int AllocateMemory(VP8Decoder* const dec) {
}
mem = (uint8_t*)dec->mem_;
- dec->intra_t_ = (uint8_t*)mem;
+ dec->intra_t_ = mem;
mem += intra_pred_mode_size;
dec->yuv_t_ = (VP8TopSamples*)mem;
@@ -750,7 +748,7 @@ static int AllocateMemory(VP8Decoder* const dec) {
mem = (uint8_t*)WEBP_ALIGN(mem);
assert((yuv_size & WEBP_ALIGN_CST) == 0);
- dec->yuv_b_ = (uint8_t*)mem;
+ dec->yuv_b_ = mem;
mem += yuv_size;
dec->mb_data_ = (VP8MBData*)mem;
@@ -766,7 +764,7 @@ static int AllocateMemory(VP8Decoder* const dec) {
const int extra_rows = kFilterExtraRows[dec->filter_type_];
const int extra_y = extra_rows * dec->cache_y_stride_;
const int extra_uv = (extra_rows / 2) * dec->cache_uv_stride_;
- dec->cache_y_ = ((uint8_t*)mem) + extra_y;
+ dec->cache_y_ = mem + extra_y;
dec->cache_u_ = dec->cache_y_
+ 16 * num_caches * dec->cache_y_stride_ + extra_uv;
dec->cache_v_ = dec->cache_u_
@@ -776,7 +774,7 @@ static int AllocateMemory(VP8Decoder* const dec) {
mem += cache_size;
// alpha plane
- dec->alpha_plane_ = alpha_size ? (uint8_t*)mem : NULL;
+ dec->alpha_plane_ = alpha_size ? mem : NULL;
mem += alpha_size;
assert(mem <= (uint8_t*)dec->mem_ + dec->mem_size_);
diff --git a/media/libwebp/dec/idec_dec.c b/media/libwebp/dec/idec_dec.c
index 78fb2e718..c9506bc83 100644
--- a/media/libwebp/dec/idec_dec.c
+++ b/media/libwebp/dec/idec_dec.c
@@ -15,9 +15,9 @@
#include <string.h>
#include <stdlib.h>
-#include "./alphai_dec.h"
-#include "./webpi_dec.h"
-#include "./vp8i_dec.h"
+#include "../dec/alphai_dec.h"
+#include "../dec/webpi_dec.h"
+#include "../dec/vp8i_dec.h"
#include "../utils/utils.h"
// In append mode, buffer allocations increase as multiples of this value.
@@ -283,10 +283,8 @@ static void RestoreContext(const MBContext* context, VP8Decoder* const dec,
static VP8StatusCode IDecError(WebPIDecoder* const idec, VP8StatusCode error) {
if (idec->state_ == STATE_VP8_DATA) {
- VP8Io* const io = &idec->io_;
- if (io->teardown != NULL) {
- io->teardown(io);
- }
+ // Synchronize the thread, clean-up and check for errors.
+ VP8ExitCritical((VP8Decoder*)idec->dec_, &idec->io_);
}
idec->state_ = STATE_ERROR;
return error;
@@ -673,12 +671,12 @@ void WebPIDelete(WebPIDecoder* idec) {
//------------------------------------------------------------------------------
// Wrapper toward WebPINewDecoder
-WebPIDecoder* WebPINewRGB(WEBP_CSP_MODE mode, uint8_t* output_buffer,
+WebPIDecoder* WebPINewRGB(WEBP_CSP_MODE csp, uint8_t* output_buffer,
size_t output_buffer_size, int output_stride) {
const int is_external_memory = (output_buffer != NULL) ? 1 : 0;
WebPIDecoder* idec;
- if (mode >= MODE_YUV) return NULL;
+ if (csp >= MODE_YUV) return NULL;
if (is_external_memory == 0) { // Overwrite parameters to sane values.
output_buffer_size = 0;
output_stride = 0;
@@ -689,7 +687,7 @@ WebPIDecoder* WebPINewRGB(WEBP_CSP_MODE mode, uint8_t* output_buffer,
}
idec = WebPINewDecoder(NULL);
if (idec == NULL) return NULL;
- idec->output_.colorspace = mode;
+ idec->output_.colorspace = csp;
idec->output_.is_external_memory = is_external_memory;
idec->output_.u.RGBA.rgba = output_buffer;
idec->output_.u.RGBA.stride = output_stride;
diff --git a/media/libwebp/dec/io_dec.c b/media/libwebp/dec/io_dec.c
index 8bfab8695..0edd9f526 100644
--- a/media/libwebp/dec/io_dec.c
+++ b/media/libwebp/dec/io_dec.c
@@ -14,7 +14,7 @@
#include <assert.h>
#include <stdlib.h>
#include "../dec/vp8i_dec.h"
-#include "./webpi_dec.h"
+#include "../dec/webpi_dec.h"
#include "../dsp/dsp.h"
#include "../dsp/yuv.h"
#include "../utils/utils.h"
@@ -212,7 +212,7 @@ static int EmitAlphaRGBA4444(const VP8Io* const io, WebPDecParams* const p,
int num_rows;
const int start_y = GetAlphaSourceRow(io, &alpha, &num_rows);
uint8_t* const base_rgba = buf->rgba + start_y * buf->stride;
-#ifdef WEBP_SWAP_16BIT_CSP
+#if (WEBP_SWAP_16BIT_CSP == 1)
uint8_t* alpha_dst = base_rgba;
#else
uint8_t* alpha_dst = base_rgba + 1;
@@ -241,6 +241,7 @@ static int EmitAlphaRGBA4444(const VP8Io* const io, WebPDecParams* const p,
//------------------------------------------------------------------------------
// YUV rescaling (no final RGB conversion needed)
+#if !defined(WEBP_REDUCE_SIZE)
static int Rescale(const uint8_t* src, int src_stride,
int new_lines, WebPRescaler* const wrk) {
int num_lines_out = 0;
@@ -431,7 +432,7 @@ static int ExportAlphaRGBA4444(WebPDecParams* const p, int y_pos,
int max_lines_out) {
const WebPRGBABuffer* const buf = &p->output->u.RGBA;
uint8_t* const base_rgba = buf->rgba + y_pos * buf->stride;
-#ifdef WEBP_SWAP_16BIT_CSP
+#if (WEBP_SWAP_16BIT_CSP == 1)
uint8_t* alpha_dst = base_rgba;
#else
uint8_t* alpha_dst = base_rgba + 1;
@@ -541,6 +542,8 @@ static int InitRGBRescaler(const VP8Io* const io, WebPDecParams* const p) {
return 1;
}
+#endif // WEBP_REDUCE_SIZE
+
//------------------------------------------------------------------------------
// Default custom functions
@@ -561,10 +564,14 @@ static int CustomSetup(VP8Io* io) {
WebPInitUpsamplers();
}
if (io->use_scaling) {
+#if !defined(WEBP_REDUCE_SIZE)
const int ok = is_rgb ? InitRGBRescaler(io, p) : InitYUVRescaler(io, p);
if (!ok) {
return 0; // memory error
}
+#else
+ return 0; // rescaling support not compiled
+#endif
} else {
if (is_rgb) {
WebPInitSamplers();
@@ -598,9 +605,6 @@ static int CustomSetup(VP8Io* io) {
}
}
- if (is_rgb) {
- VP8YUVInit();
- }
return 1;
}
diff --git a/media/libwebp/dec/quant_dec.c b/media/libwebp/dec/quant_dec.c
index 14e319894..6ecaf1c45 100644
--- a/media/libwebp/dec/quant_dec.c
+++ b/media/libwebp/dec/quant_dec.c
@@ -11,7 +11,7 @@
//
// Author: Skal (pascal.massimino@gmail.com)
-#include "./vp8i_dec.h"
+#include "../dec/vp8i_dec.h"
static WEBP_INLINE int clip(int v, int M) {
return v < 0 ? 0 : v > M ? M : v;
diff --git a/media/libwebp/dec/tree_dec.c b/media/libwebp/dec/tree_dec.c
index 9e805f60f..581886025 100644
--- a/media/libwebp/dec/tree_dec.c
+++ b/media/libwebp/dec/tree_dec.c
@@ -11,15 +11,19 @@
//
// Author: Skal (pascal.massimino@gmail.com)
-#include "./vp8i_dec.h"
+#include "../dec/vp8i_dec.h"
#include "../utils/bit_reader_inl_utils.h"
+#if !defined(USE_GENERIC_TREE)
#if !defined(__arm__) && !defined(_M_ARM) && !defined(__aarch64__)
// using a table is ~1-2% slower on ARM. Prefer the coded-tree approach then.
-#define USE_GENERIC_TREE
+#define USE_GENERIC_TREE 1 // ALTERNATE_CODE
+#else
+#define USE_GENERIC_TREE 0
#endif
+#endif // USE_GENERIC_TREE
-#ifdef USE_GENERIC_TREE
+#if (USE_GENERIC_TREE == 1)
static const int8_t kYModesIntra4[18] = {
-B_DC_PRED, 1,
-B_TM_PRED, 2,
@@ -317,7 +321,7 @@ static void ParseIntraMode(VP8BitReader* const br,
int x;
for (x = 0; x < 4; ++x) {
const uint8_t* const prob = kBModesProba[top[x]][ymode];
-#ifdef USE_GENERIC_TREE
+#if (USE_GENERIC_TREE == 1)
// Generic tree-parsing
int i = kYModesIntra4[VP8GetBit(br, prob[0])];
while (i > 0) {
@@ -335,7 +339,7 @@ static void ParseIntraMode(VP8BitReader* const br,
(!VP8GetBit(br, prob[6]) ? B_LD_PRED :
(!VP8GetBit(br, prob[7]) ? B_VL_PRED :
(!VP8GetBit(br, prob[8]) ? B_HD_PRED : B_HU_PRED)));
-#endif // USE_GENERIC_TREE
+#endif // USE_GENERIC_TREE
top[x] = ymode;
}
memcpy(modes, top, 4 * sizeof(*top));
@@ -498,7 +502,7 @@ static const uint8_t
// Paragraph 9.9
-static const int kBands[16 + 1] = {
+static const uint8_t kBands[16 + 1] = {
0, 1, 2, 3, 6, 4, 5, 6, 6, 6, 6, 6, 6, 6, 6, 7,
0 // extra entry as sentinel
};
diff --git a/media/libwebp/dec/vp8_dec.c b/media/libwebp/dec/vp8_dec.c
index fad8d9cf3..e7958be6b 100644
--- a/media/libwebp/dec/vp8_dec.c
+++ b/media/libwebp/dec/vp8_dec.c
@@ -13,10 +13,10 @@
#include <stdlib.h>
-#include "./alphai_dec.h"
-#include "./vp8i_dec.h"
-#include "./vp8li_dec.h"
-#include "./webpi_dec.h"
+#include "../dec/alphai_dec.h"
+#include "../dec/vp8i_dec.h"
+#include "../dec/vp8li_dec.h"
+#include "../dec/webpi_dec.h"
#include "../utils/bit_reader_inl_utils.h"
#include "../utils/utils.h"
@@ -491,7 +491,7 @@ static int GetCoeffsAlt(VP8BitReader* const br,
return 16;
}
-WEBP_TSAN_IGNORE_FUNCTION static void InitGetCoeffs(void) {
+static WEBP_TSAN_IGNORE_FUNCTION void InitGetCoeffs(void) {
if (GetCoeffs == NULL) {
if (VP8GetCPUInfo != NULL && VP8GetCPUInfo(kSlowSSSE3)) {
GetCoeffs = GetCoeffsAlt;
diff --git a/media/libwebp/dec/vp8_dec.h b/media/libwebp/dec/vp8_dec.h
index b9337bbec..7b4941d65 100644
--- a/media/libwebp/dec/vp8_dec.h
+++ b/media/libwebp/dec/vp8_dec.h
@@ -11,8 +11,8 @@
//
// Author: Skal (pascal.massimino@gmail.com)
-#ifndef WEBP_WEBP_DECODE_VP8_H_
-#define WEBP_WEBP_DECODE_VP8_H_
+#ifndef WEBP_DEC_VP8_DEC_H_
+#define WEBP_DEC_VP8_DEC_H_
#include "../webp/decode.h"
@@ -33,7 +33,7 @@ extern "C" {
// /* customize io's functions (setup()/put()/teardown()) if needed. */
//
// VP8Decoder* dec = VP8New();
-// bool ok = VP8Decode(dec);
+// int ok = VP8Decode(dec, &io);
// if (!ok) printf("Error: %s\n", VP8StatusMessage(dec));
// VP8Delete(dec);
// return ok;
@@ -157,24 +157,24 @@ void VP8Delete(VP8Decoder* const dec);
// Miscellaneous VP8/VP8L bitstream probing functions.
// Returns true if the next 3 bytes in data contain the VP8 signature.
-WEBP_EXTERN(int) VP8CheckSignature(const uint8_t* const data, size_t data_size);
+WEBP_EXTERN int VP8CheckSignature(const uint8_t* const data, size_t data_size);
// Validates the VP8 data-header and retrieves basic header information viz
// width and height. Returns 0 in case of formatting error. *width/*height
// can be passed NULL.
-WEBP_EXTERN(int) VP8GetInfo(
+WEBP_EXTERN int VP8GetInfo(
const uint8_t* data,
size_t data_size, // data available so far
size_t chunk_size, // total data size expected in the chunk
int* const width, int* const height);
// Returns true if the next byte(s) in data is a VP8L signature.
-WEBP_EXTERN(int) VP8LCheckSignature(const uint8_t* const data, size_t size);
+WEBP_EXTERN int VP8LCheckSignature(const uint8_t* const data, size_t size);
// Validates the VP8L data-header and retrieves basic header information viz
// width, height and alpha. Returns 0 in case of formatting error.
// width/height/has_alpha can be passed NULL.
-WEBP_EXTERN(int) VP8LGetInfo(
+WEBP_EXTERN int VP8LGetInfo(
const uint8_t* data, size_t data_size, // data available so far
int* const width, int* const height, int* const has_alpha);
@@ -182,4 +182,4 @@ WEBP_EXTERN(int) VP8LGetInfo(
} // extern "C"
#endif
-#endif /* WEBP_WEBP_DECODE_VP8_H_ */
+#endif /* WEBP_DEC_VP8_DEC_H_ */
diff --git a/media/libwebp/dec/vp8i_dec.h b/media/libwebp/dec/vp8i_dec.h
index 555853e8f..d0ef67b91 100644
--- a/media/libwebp/dec/vp8i_dec.h
+++ b/media/libwebp/dec/vp8i_dec.h
@@ -11,12 +11,12 @@
//
// Author: Skal (pascal.massimino@gmail.com)
-#ifndef WEBP_DEC_VP8I_H_
-#define WEBP_DEC_VP8I_H_
+#ifndef WEBP_DEC_VP8I_DEC_H_
+#define WEBP_DEC_VP8I_DEC_H_
#include <string.h> // for memcpy()
-#include "./common_dec.h"
-#include "./vp8li_dec.h"
+#include "../dec/common_dec.h"
+#include "../dec/vp8li_dec.h"
#include "../utils/bit_reader_utils.h"
#include "../utils/random_utils.h"
#include "../utils/thread_utils.h"
@@ -30,8 +30,8 @@ extern "C" {
// Various defines and enums
// version numbers
-#define DEC_MAJ_VERSION 0
-#define DEC_MIN_VERSION 6
+#define DEC_MAJ_VERSION 1
+#define DEC_MIN_VERSION 0
#define DEC_REV_VERSION 0
// YUV-cache parameters. Cache is 32-bytes wide (= one cacheline).
@@ -57,7 +57,6 @@ extern "C" {
// '|' = left sample, '-' = top sample, '+' = top-left sample
// 't' = extra top-right sample for 4x4 modes
#define YUV_SIZE (BPS * 17 + BPS * 9)
-#define Y_SIZE (BPS * 17)
#define Y_OFF (BPS * 1 + 8)
#define U_OFF (Y_OFF + BPS * 16 + BPS)
#define V_OFF (U_OFF + 16)
@@ -317,4 +316,4 @@ const uint8_t* VP8DecompressAlphaRows(VP8Decoder* const dec,
} // extern "C"
#endif
-#endif /* WEBP_DEC_VP8I_H_ */
+#endif /* WEBP_DEC_VP8I_DEC_H_ */
diff --git a/media/libwebp/dec/vp8l_dec.c b/media/libwebp/dec/vp8l_dec.c
index ef359a91f..3d303fb22 100644
--- a/media/libwebp/dec/vp8l_dec.c
+++ b/media/libwebp/dec/vp8l_dec.c
@@ -14,8 +14,8 @@
#include <stdlib.h>
-#include "./alphai_dec.h"
-#include "./vp8li_dec.h"
+#include "../dec/alphai_dec.h"
+#include "../dec/vp8li_dec.h"
#include "../dsp/dsp.h"
#include "../dsp/lossless.h"
#include "../dsp/lossless_common.h"
@@ -28,8 +28,8 @@
static const int kCodeLengthLiterals = 16;
static const int kCodeLengthRepeatCode = 16;
-static const int kCodeLengthExtraBits[3] = { 2, 3, 7 };
-static const int kCodeLengthRepeatOffsets[3] = { 3, 3, 11 };
+static const uint8_t kCodeLengthExtraBits[3] = { 2, 3, 7 };
+static const uint8_t kCodeLengthRepeatOffsets[3] = { 3, 3, 11 };
// -----------------------------------------------------------------------------
// Five Huffman codes are used at each meta code:
@@ -86,7 +86,7 @@ static const uint8_t kCodeToPlane[CODE_TO_PLANE_CODES] = {
// All values computed for 8-bit first level lookup with Mark Adler's tool:
// http://www.hdfgroup.org/ftp/lib-external/zlib/zlib-1.2.5/examples/enough.c
#define FIXED_TABLE_SIZE (630 * 3 + 410)
-static const int kTableSize[12] = {
+static const uint16_t kTableSize[12] = {
FIXED_TABLE_SIZE + 654,
FIXED_TABLE_SIZE + 656,
FIXED_TABLE_SIZE + 658,
@@ -359,12 +359,14 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
int color_cache_bits, int allow_recursion) {
int i, j;
VP8LBitReader* const br = &dec->br_;
+ VP8LBitReader br_tmp;
VP8LMetadata* const hdr = &dec->hdr_;
uint32_t* huffman_image = NULL;
HTreeGroup* htree_groups = NULL;
HuffmanCode* huffman_tables = NULL;
HuffmanCode* next = NULL;
int num_htree_groups = 1;
+ int num_htree_groups_limit = 1;
int max_alphabet_size = 0;
int* code_lengths = NULL;
const int table_size = kTableSize[color_cache_bits];
@@ -388,6 +390,18 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
num_htree_groups = group + 1;
}
}
+ // Check the validity of num_htree_groups. If it seems too big, use a
+ // smaller value for later. This will prevent big memory allocations to end
+ // up with a bad bitstream anyway.
+ // The value of 1000 is totally arbitrary. We know that num_htree_groups
+ // is smaller than (1 << 16) and should be smaller than the number of pixels
+ // (though the format allows it to be bigger).
+ if (num_htree_groups > 1000 || num_htree_groups > xsize * ysize) {
+ num_htree_groups_limit = (xsize * ysize > 1000) ? 1000 : xsize * ysize;
+ br_tmp = dec->br_;
+ } else {
+ num_htree_groups_limit = num_htree_groups;
+ }
}
if (br->eos_) goto Error;
@@ -403,68 +417,86 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
}
}
- huffman_tables = (HuffmanCode*)WebPSafeMalloc(num_htree_groups * table_size,
- sizeof(*huffman_tables));
- htree_groups = VP8LHtreeGroupsNew(num_htree_groups);
code_lengths = (int*)WebPSafeCalloc((uint64_t)max_alphabet_size,
sizeof(*code_lengths));
+ // If num_htree_groups_tmp == num_htree_groups, the following loop is executed
+ // once.
+ // If num_htree_groups_tmp != num_htree_groups, we execute the loop the first
+ // time with little memory allocation in the hope that there is a bitstream
+ // error. If after num_htree_groups_tmp iterations, no error appears,
+ // num_htree_groups is probably the right value so try it out.
+ do {
+ huffman_tables = (HuffmanCode*)WebPSafeMalloc(
+ num_htree_groups_limit * table_size, sizeof(*huffman_tables));
+ htree_groups = VP8LHtreeGroupsNew(num_htree_groups_limit);
+
+ if (htree_groups == NULL || code_lengths == NULL ||
+ huffman_tables == NULL) {
+ dec->status_ = VP8_STATUS_OUT_OF_MEMORY;
+ goto Error;
+ }
- if (htree_groups == NULL || code_lengths == NULL || huffman_tables == NULL) {
- dec->status_ = VP8_STATUS_OUT_OF_MEMORY;
- goto Error;
- }
-
- next = huffman_tables;
- for (i = 0; i < num_htree_groups; ++i) {
- HTreeGroup* const htree_group = &htree_groups[i];
- HuffmanCode** const htrees = htree_group->htrees;
- int size;
- int total_size = 0;
- int is_trivial_literal = 1;
- int max_bits = 0;
- for (j = 0; j < HUFFMAN_CODES_PER_META_CODE; ++j) {
- int alphabet_size = kAlphabetSize[j];
- htrees[j] = next;
- if (j == 0 && color_cache_bits > 0) {
- alphabet_size += 1 << color_cache_bits;
- }
- size = ReadHuffmanCode(alphabet_size, dec, code_lengths, next);
- if (size == 0) {
- goto Error;
- }
- if (is_trivial_literal && kLiteralMap[j] == 1) {
- is_trivial_literal = (next->bits == 0);
- }
- total_size += next->bits;
- next += size;
- if (j <= ALPHA) {
- int local_max_bits = code_lengths[0];
- int k;
- for (k = 1; k < alphabet_size; ++k) {
- if (code_lengths[k] > local_max_bits) {
- local_max_bits = code_lengths[k];
+ next = huffman_tables;
+ for (i = 0; i < num_htree_groups_limit; ++i) {
+ HTreeGroup* const htree_group = &htree_groups[i];
+ HuffmanCode** const htrees = htree_group->htrees;
+ int size;
+ int total_size = 0;
+ int is_trivial_literal = 1;
+ int max_bits = 0;
+ for (j = 0; j < HUFFMAN_CODES_PER_META_CODE; ++j) {
+ int alphabet_size = kAlphabetSize[j];
+ htrees[j] = next;
+ if (j == 0 && color_cache_bits > 0) {
+ alphabet_size += 1 << color_cache_bits;
+ }
+ size = ReadHuffmanCode(alphabet_size, dec, code_lengths, next);
+ if (size == 0) {
+ goto Error;
+ }
+ if (is_trivial_literal && kLiteralMap[j] == 1) {
+ is_trivial_literal = (next->bits == 0);
+ }
+ total_size += next->bits;
+ next += size;
+ if (j <= ALPHA) {
+ int local_max_bits = code_lengths[0];
+ int k;
+ for (k = 1; k < alphabet_size; ++k) {
+ if (code_lengths[k] > local_max_bits) {
+ local_max_bits = code_lengths[k];
+ }
}
+ max_bits += local_max_bits;
}
- max_bits += local_max_bits;
}
- }
- htree_group->is_trivial_literal = is_trivial_literal;
- htree_group->is_trivial_code = 0;
- if (is_trivial_literal) {
- const int red = htrees[RED][0].value;
- const int blue = htrees[BLUE][0].value;
- const int alpha = htrees[ALPHA][0].value;
- htree_group->literal_arb =
- ((uint32_t)alpha << 24) | (red << 16) | blue;
- if (total_size == 0 && htrees[GREEN][0].value < NUM_LITERAL_CODES) {
- htree_group->is_trivial_code = 1;
- htree_group->literal_arb |= htrees[GREEN][0].value << 8;
+ htree_group->is_trivial_literal = is_trivial_literal;
+ htree_group->is_trivial_code = 0;
+ if (is_trivial_literal) {
+ const int red = htrees[RED][0].value;
+ const int blue = htrees[BLUE][0].value;
+ const int alpha = htrees[ALPHA][0].value;
+ htree_group->literal_arb = ((uint32_t)alpha << 24) | (red << 16) | blue;
+ if (total_size == 0 && htrees[GREEN][0].value < NUM_LITERAL_CODES) {
+ htree_group->is_trivial_code = 1;
+ htree_group->literal_arb |= htrees[GREEN][0].value << 8;
+ }
}
+ htree_group->use_packed_table =
+ !htree_group->is_trivial_code && (max_bits < HUFFMAN_PACKED_BITS);
+ if (htree_group->use_packed_table) BuildPackedTable(htree_group);
}
- htree_group->use_packed_table = !htree_group->is_trivial_code &&
- (max_bits < HUFFMAN_PACKED_BITS);
- if (htree_group->use_packed_table) BuildPackedTable(htree_group);
- }
+ // If we have survived up to here, num_htree_groups might actually be
+ // that big so restart with a proper allocation.
+ if (num_htree_groups != num_htree_groups_limit) {
+ num_htree_groups_limit = num_htree_groups;
+ WebPSafeFree(huffman_tables);
+ VP8LHtreeGroupsFree(htree_groups);
+ huffman_tables = NULL;
+ htree_groups = NULL;
+ dec->br_ = br_tmp;
+ }
+ } while (i != num_htree_groups);
WebPSafeFree(code_lengths);
// All OK. Finalize pointers and return.
@@ -485,6 +517,7 @@ static int ReadHuffmanCodes(VP8LDecoder* const dec, int xsize, int ysize,
//------------------------------------------------------------------------------
// Scaling.
+#if !defined(WEBP_REDUCE_SIZE)
static int AllocateAndInitRescaler(VP8LDecoder* const dec, VP8Io* const io) {
const int num_channels = 4;
const int in_width = io->mb_w;
@@ -516,10 +549,13 @@ static int AllocateAndInitRescaler(VP8LDecoder* const dec, VP8Io* const io) {
out_width, out_height, 0, num_channels, work);
return 1;
}
+#endif // WEBP_REDUCE_SIZE
//------------------------------------------------------------------------------
// Export to ARGB
+#if !defined(WEBP_REDUCE_SIZE)
+
// We have special "export" function since we need to convert from BGRA
static int Export(WebPRescaler* const rescaler, WEBP_CSP_MODE colorspace,
int rgba_stride, uint8_t* const rgba) {
@@ -561,6 +597,8 @@ static int EmitRescaledRowsRGBA(const VP8LDecoder* const dec,
return num_lines_out;
}
+#endif // WEBP_REDUCE_SIZE
+
// Emit rows without any scaling.
static int EmitRows(WEBP_CSP_MODE colorspace,
const uint8_t* row_in, int in_stride,
@@ -746,9 +784,12 @@ static void ProcessRows(VP8LDecoder* const dec, int row) {
if (WebPIsRGBMode(output->colorspace)) { // convert to RGBA
const WebPRGBABuffer* const buf = &output->u.RGBA;
uint8_t* const rgba = buf->rgba + dec->last_out_row_ * buf->stride;
- const int num_rows_out = io->use_scaling ?
+ const int num_rows_out =
+#if !defined(WEBP_REDUCE_SIZE)
+ io->use_scaling ?
EmitRescaledRowsRGBA(dec, rows_data, in_stride, io->mb_h,
rgba, buf->stride) :
+#endif // WEBP_REDUCE_SIZE
EmitRows(output->colorspace, rows_data, in_stride,
io->mb_w, io->mb_h, rgba, buf->stride);
// Update 'last_out_row_'.
@@ -1012,12 +1053,13 @@ static int DecodeAlphaData(VP8LDecoder* const dec, uint8_t* const data,
ok = 0;
goto End;
}
- assert(br->eos_ == VP8LIsEndOfStream(br));
+ br->eos_ = VP8LIsEndOfStream(br);
}
// Process the remaining rows corresponding to last row-block.
ExtractPalettedAlphaRows(dec, row > last_row ? last_row : row);
End:
+ br->eos_ = VP8LIsEndOfStream(br);
if (!ok || (br->eos_ && pos < end)) {
ok = 0;
dec->status_ = br->eos_ ? VP8_STATUS_SUSPENDED
@@ -1090,11 +1132,12 @@ static int DecodeImageData(VP8LDecoder* const dec, uint32_t* const data,
VP8LFillBitWindow(br);
if (htree_group->use_packed_table) {
code = ReadPackedSymbols(htree_group, br, src);
+ if (VP8LIsEndOfStream(br)) break;
if (code == PACKED_NON_LITERAL_CODE) goto AdvanceByOne;
} else {
code = ReadSymbol(htree_group->htrees[GREEN], br);
}
- if (br->eos_) break; // early out
+ if (VP8LIsEndOfStream(br)) break;
if (code < NUM_LITERAL_CODES) { // Literal
if (htree_group->is_trivial_literal) {
*src = htree_group->literal_arb | (code << 8);
@@ -1104,7 +1147,7 @@ static int DecodeImageData(VP8LDecoder* const dec, uint32_t* const data,
VP8LFillBitWindow(br);
blue = ReadSymbol(htree_group->htrees[BLUE], br);
alpha = ReadSymbol(htree_group->htrees[ALPHA], br);
- if (br->eos_) break;
+ if (VP8LIsEndOfStream(br)) break;
*src = ((uint32_t)alpha << 24) | (red << 16) | (code << 8) | blue;
}
AdvanceByOne:
@@ -1132,7 +1175,7 @@ static int DecodeImageData(VP8LDecoder* const dec, uint32_t* const data,
VP8LFillBitWindow(br);
dist_code = GetCopyDistance(dist_symbol, br);
dist = PlaneCodeToDistance(width, dist_code);
- if (br->eos_) break;
+ if (VP8LIsEndOfStream(br)) break;
if (src - data < (ptrdiff_t)dist || src_end - src < (ptrdiff_t)length) {
goto Error;
} else {
@@ -1169,9 +1212,9 @@ static int DecodeImageData(VP8LDecoder* const dec, uint32_t* const data,
} else { // Not reached
goto Error;
}
- assert(br->eos_ == VP8LIsEndOfStream(br));
}
+ br->eos_ = VP8LIsEndOfStream(br);
if (dec->incremental_ && br->eos_ && src < src_end) {
RestoreState(dec);
} else if (!br->eos_) {
@@ -1630,12 +1673,19 @@ int VP8LDecodeImage(VP8LDecoder* const dec) {
if (!AllocateInternalBuffers32b(dec, io->width)) goto Err;
+#if !defined(WEBP_REDUCE_SIZE)
if (io->use_scaling && !AllocateAndInitRescaler(dec, io)) goto Err;
-
+#else
+ if (io->use_scaling) {
+ dec->status_ = VP8_STATUS_INVALID_PARAM;
+ goto Err;
+ }
+#endif
if (io->use_scaling || WebPIsPremultipliedMode(dec->output_->colorspace)) {
// need the alpha-multiply functions for premultiplied output or rescaling
WebPInitAlphaProcessing();
}
+
if (!WebPIsRGBMode(dec->output_->colorspace)) {
WebPInitConvertARGBToYUV();
if (dec->output_->u.YUVA.a != NULL) WebPInitAlphaProcessing();
diff --git a/media/libwebp/dec/vp8li_dec.h b/media/libwebp/dec/vp8li_dec.h
index 097a9d058..ed89a02a9 100644
--- a/media/libwebp/dec/vp8li_dec.h
+++ b/media/libwebp/dec/vp8li_dec.h
@@ -12,11 +12,11 @@
// Author: Skal (pascal.massimino@gmail.com)
// Vikas Arora(vikaas.arora@gmail.com)
-#ifndef WEBP_DEC_VP8LI_H_
-#define WEBP_DEC_VP8LI_H_
+#ifndef WEBP_DEC_VP8LI_DEC_H_
+#define WEBP_DEC_VP8LI_DEC_H_
#include <string.h> // for memcpy()
-#include "./webpi_dec.h"
+#include "../dec/webpi_dec.h"
#include "../utils/bit_reader_utils.h"
#include "../utils/color_cache_utils.h"
#include "../utils/huffman_utils.h"
@@ -132,4 +132,4 @@ void VP8LDelete(VP8LDecoder* const dec);
} // extern "C"
#endif
-#endif /* WEBP_DEC_VP8LI_H_ */
+#endif /* WEBP_DEC_VP8LI_DEC_H_ */
diff --git a/media/libwebp/dec/webp_dec.c b/media/libwebp/dec/webp_dec.c
index a8e9c2c51..89c264d0a 100644
--- a/media/libwebp/dec/webp_dec.c
+++ b/media/libwebp/dec/webp_dec.c
@@ -13,9 +13,9 @@
#include <stdlib.h>
-#include "./vp8i_dec.h"
-#include "./vp8li_dec.h"
-#include "./webpi_dec.h"
+#include "../dec/vp8i_dec.h"
+#include "../dec/vp8li_dec.h"
+#include "../dec/webpi_dec.h"
#include "../utils/utils.h"
#include "../webp/mux_types.h" // ALPHA_FLAG
@@ -421,7 +421,9 @@ VP8StatusCode WebPParseHeaders(WebPHeaderStructure* const headers) {
NULL, NULL, NULL, &has_animation,
NULL, headers);
if (status == VP8_STATUS_OK || status == VP8_STATUS_NOT_ENOUGH_DATA) {
- // TODO(jzern): full support of animation frames will require API additions.
+ // The WebPDemux API + libwebp can be used to decode individual
+ // uncomposited frames or the WebPAnimDecoder can be used to fully
+ // reconstruct them (see webp/demux.h).
if (has_animation) {
status = VP8_STATUS_UNSUPPORTED_FEATURE;
}
diff --git a/media/libwebp/dec/webpi_dec.h b/media/libwebp/dec/webpi_dec.h
index 696abc195..d0a045e70 100644
--- a/media/libwebp/dec/webpi_dec.h
+++ b/media/libwebp/dec/webpi_dec.h
@@ -11,15 +11,15 @@
//
// Author: somnath@google.com (Somnath Banerjee)
-#ifndef WEBP_DEC_WEBPI_H_
-#define WEBP_DEC_WEBPI_H_
+#ifndef WEBP_DEC_WEBPI_DEC_H_
+#define WEBP_DEC_WEBPI_DEC_H_
#ifdef __cplusplus
extern "C" {
#endif
#include "../utils/rescaler_utils.h"
-#include "./vp8_dec.h"
+#include "../dec/vp8_dec.h"
//------------------------------------------------------------------------------
// WebPDecParams: Decoding output parameters. Transient internal object.
@@ -130,4 +130,4 @@ int WebPAvoidSlowMemory(const WebPDecBuffer* const output,
} // extern "C"
#endif
-#endif /* WEBP_DEC_WEBPI_H_ */
+#endif /* WEBP_DEC_WEBPI_DEC_H_ */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 15:21:42 +0000