Added simple avifdump tool for aiding in AVIF debugging (work in pr…

…ogress)

CHANGELOG.md

@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Added
+- Added simple `avifdump` tool for aiding in AVIF debugging
 
 ## [0.6.4] - 2020-04-14
 ### Added

CMakeLists.txt

@@ -322,6 +322,17 @@ if(AVIF_BUILD_APPS)
     target_link_libraries(avifdec avif ${AVIF_PLATFORM_LIBRARIES} ${ZLIB_LIBRARY} ${PNG_LIBRARY})
     target_include_directories(avifdec PRIVATE apps/shared ${PNG_PNG_INCLUDE_DIR})
 
+    add_executable(avifdump
+        apps/avifdump.c
+
+        apps/shared/avifutil.c
+    )
+    if(AVIF_LOCAL_LIBGAV1)
+        set_target_properties(avifdump PROPERTIES LINKER_LANGUAGE "CXX")
+    endif()
+    target_link_libraries(avifdump avif ${AVIF_PLATFORM_LIBRARIES} ${ZLIB_LIBRARY} ${PNG_LIBRARY})
+    target_include_directories(avifdump PRIVATE apps/shared ${PNG_PNG_INCLUDE_DIR})
+
     if(NOT SKIP_INSTALL_APPS AND NOT SKIP_INSTALL_ALL)
         install(TARGETS avifenc avifdec
             RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"

apps/avifdump.c

@@ -0,0 +1,88 @@
+// Copyright 2019 Joe Drago. All rights reserved.
+// SPDX-License-Identifier: BSD-2-Clause
+
+#include "avif/avif.h"
+
+#include "avifutil.h"
+
+#include <stdio.h>
+#include <string.h>
+
+int syntax(void)
+{
+    printf("Syntax: aviffuzz input.avif\n");
+    return 0;
+}
+
+int main(int argc, char * argv[])
+{
+    const char * inputFilename = NULL;
+    if (argc < 2) {
+        return 0;
+    }
+    inputFilename = argv[1];
+
+    FILE * inputFile = fopen(inputFilename, "rb");
+    if (!inputFile) {
+        fprintf(stderr, "Cannot open file for read: %s\n", inputFilename);
+        return 1;
+    }
+    fseek(inputFile, 0, SEEK_END);
+    size_t inputFileSize = ftell(inputFile);
+    fseek(inputFile, 0, SEEK_SET);
+
+    if (inputFileSize < 1) {
+        fprintf(stderr, "File too small: %s\n", inputFilename);
+        fclose(inputFile);
+        return 1;
+    }
+
+    avifRWData raw = AVIF_DATA_EMPTY;
+    avifRWDataRealloc(&raw, inputFileSize);
+    if (fread(raw.data, 1, inputFileSize, inputFile) != inputFileSize) {
+        fprintf(stderr, "Failed to read %zu bytes: %s\n", inputFileSize, inputFilename);
+        fclose(inputFile);
+        avifRWDataFree(&raw);
+        return 1;
+    }
+
+    fclose(inputFile);
+    inputFile = NULL;
+
+    avifDecoder * decoder = avifDecoderCreate();
+    avifResult result = avifDecoderParse(decoder, (avifROData *)&raw);
+    if (result == AVIF_RESULT_OK) {
+        printf("Image decoded: %s\n", inputFilename);
+
+        int frameIndex = 0;
+        avifBool firstImage = AVIF_TRUE;
+        while (avifDecoderNextImage(decoder) == AVIF_RESULT_OK) {
+            if (firstImage) {
+                firstImage = AVIF_FALSE;
+                avifImageDump(decoder->image);
+
+                printf(" * %zu timescales per second, %2.2f seconds (%zu timescales), %d frame%s\n",
+                       decoder->timescale,
+                       decoder->duration,
+                       decoder->durationInTimescales,
+                       decoder->imageCount,
+                       (decoder->imageCount == 1) ? "" : "s");
+                printf(" * Frames:\n");
+            }
+
+            printf("   * Decoded frame [%d] [pts %2.2f (%zu timescales)] [duration %2.2f (%zu timescales)]\n",
+                   frameIndex,
+                   decoder->imageTiming.pts,
+                   decoder->imageTiming.ptsInTimescales,
+                   decoder->imageTiming.duration,
+                   decoder->imageTiming.durationInTimescales);
+            ++frameIndex;
+        }
+    } else {
+        printf("ERROR: Failed to decode image: %s\n", avifResultToString(result));
+    }
+
+    avifRWDataFree(&raw);
+    avifDecoderDestroy(decoder);
+    return 0;
+}

apps/shared/avifutil.c

@@ -54,7 +54,6 @@ void avifImageDump(avifImage * avif)
             printf("    * imir (Mirror)        : %u (%s)\n", avif->imir.axis, (avif->imir.axis == 0) ? "Vertical" : "Horizontal");
         }
     }
-    printf("\n");
 }
 
 void avifPrintVersions(void)