mirror of
https://github.com/webmproject/libwebp.git
synced 2025-07-12 22:14:29 +02:00
webpmux: allow reading argument from a file
if a single text file name is supplied as argument (e.g.: 'webpmux my_long_list_of_frames.txt'), the command line arguments are actually parsed from this file. Tokenizer will remove space, tabs, LF, CR, returns, etc. + changed ImgIoUtilReadFile() to return a null-terminated data, for convenience. + misc clean-up in the code BUG=webp:355 Change-Id: I76796305641d660933de5881763d723006712fa9 ---
This commit is contained in:
Pascal Massimino
@ -47,6 +47,7 @@
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webpmux -info in.webp
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webpmux [ -h | -help ]
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webpmux -version
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webpmux argument_file_name
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*/
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#ifdef HAVE_CONFIG_H
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@ -108,28 +109,29 @@ static const char* const kDescriptions[LAST_FEATURE] = {
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};
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typedef struct {
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FeatureType type_;
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FeatureArg* args_;
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int arg_count_;
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} Feature;
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// command line arguments
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int argc_;
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const char** argv_;
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WebPData argv_data_;
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int own_argv_;
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typedef struct {
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ActionType action_type_;
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const char* input_;
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const char* output_;
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Feature feature_;
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} WebPMuxConfig;
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FeatureType type_;
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FeatureArg* args_;
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int arg_count_;
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} Config;
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//------------------------------------------------------------------------------
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// Helper functions.
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static int CountOccurrences(const char* arglist[], int list_length,
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const char* arg) {
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static int CountOccurrences(const Config* const config, const char* arg) {
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int i;
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int num_occurences = 0;
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for (i = 0; i < list_length; ++i) {
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if (!strcmp(arglist[i], arg)) {
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for (i = 0; i < config->argc_; ++i) {
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if (!strcmp(config->argv_[i], arg)) {
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++num_occurences;
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}
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}
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@ -301,6 +303,7 @@ static void PrintHelp(void) {
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printf(" webpmux -info INPUT\n");
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printf(" webpmux [-h|-help]\n");
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printf(" webpmux -version\n");
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printf(" webpmux argument_file_name\n");
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printf("\n");
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printf("GET_OPTIONS:\n");
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@ -369,6 +372,10 @@ static void PrintHelp(void) {
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printf("\nNote: The nature of EXIF, XMP and ICC data is not checked");
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printf(" and is assumed to be\nvalid.\n");
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printf("\nNote: if a single file name is passed as the argument, the "
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"arguments will be\n");
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printf("tokenized from this file. The file name must not start with "
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"the character '-'.\n");
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}
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static void WarnAboutOddOffset(const WebPMuxFrameInfo* const info) {
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@ -394,7 +401,7 @@ static int CreateMux(const char* const filename, WebPMux** mux) {
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assert(mux != NULL);
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if (!ReadFileToWebPData(filename, &bitstream)) return 0;
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*mux = WebPMuxCreate(&bitstream, 1);
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free((void*)bitstream.bytes);
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WebPDataClear(&bitstream);
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if (*mux != NULL) return 1;
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fprintf(stderr, "Failed to create mux object from file %s.\n", filename);
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return 0;
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@ -517,10 +524,15 @@ static int ParseBgcolorArgs(const char* args, uint32_t* const bgcolor) {
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//------------------------------------------------------------------------------
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// Clean-up.
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static void DeleteConfig(WebPMuxConfig* config) {
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static void DeleteConfig(Config* const config) {
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if (config != NULL) {
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free(config->feature_.args_);
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free(config->args_);
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if (config->own_argv_) {
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free(config->argv_);
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WebPDataClear(&config->argv_data_);
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}
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memset(config, 0, sizeof(*config));
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WebPDataInit(&config->argv_data_);
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}
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}
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@ -531,7 +543,7 @@ static void DeleteConfig(WebPMuxConfig* config) {
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// Returns 1 on valid, 0 otherwise.
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// Also fills up num_feature_args to be number of feature arguments given.
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// (e.g. if there are 4 '-frame's and 1 '-loop', then num_feature_args = 5).
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static int ValidateCommandLine(int argc, const char* argv[],
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static int ValidateCommandLine(const Config* const config,
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int* num_feature_args) {
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int num_frame_args;
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int num_loop_args;
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@ -543,27 +555,27 @@ static int ValidateCommandLine(int argc, const char* argv[],
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*num_feature_args = 0;
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// Simple checks.
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if (CountOccurrences(argv, argc, "-get") > 1) {
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if (CountOccurrences(config, "-get") > 1) {
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ERROR_GOTO1("ERROR: Multiple '-get' arguments specified.\n", ErrValidate);
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}
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if (CountOccurrences(argv, argc, "-set") > 1) {
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if (CountOccurrences(config, "-set") > 1) {
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ERROR_GOTO1("ERROR: Multiple '-set' arguments specified.\n", ErrValidate);
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}
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if (CountOccurrences(argv, argc, "-strip") > 1) {
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if (CountOccurrences(config, "-strip") > 1) {
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ERROR_GOTO1("ERROR: Multiple '-strip' arguments specified.\n", ErrValidate);
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}
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if (CountOccurrences(argv, argc, "-info") > 1) {
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if (CountOccurrences(config, "-info") > 1) {
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ERROR_GOTO1("ERROR: Multiple '-info' arguments specified.\n", ErrValidate);
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}
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if (CountOccurrences(argv, argc, "-o") > 1) {
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if (CountOccurrences(config, "-o") > 1) {
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ERROR_GOTO1("ERROR: Multiple output files specified.\n", ErrValidate);
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}
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// Compound checks.
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num_frame_args = CountOccurrences(argv, argc, "-frame");
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num_loop_args = CountOccurrences(argv, argc, "-loop");
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num_bgcolor_args = CountOccurrences(argv, argc, "-bgcolor");
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num_durations_args = CountOccurrences(argv, argc, "-duration");
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num_frame_args = CountOccurrences(config, "-frame");
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num_loop_args = CountOccurrences(config, "-loop");
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num_bgcolor_args = CountOccurrences(config, "-bgcolor");
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num_durations_args = CountOccurrences(config, "-duration");
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if (num_loop_args > 1) {
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ERROR_GOTO1("ERROR: Multiple loop counts specified.\n", ErrValidate);
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@ -598,7 +610,7 @@ static int ValidateCommandLine(int argc, const char* argv[],
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#define ACTION_IS_NIL (config->action_type_ == NIL_ACTION)
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#define FEATURETYPE_IS_NIL (feature->type_ == NIL_FEATURE)
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#define FEATURETYPE_IS_NIL (config->type_ == NIL_FEATURE)
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#define CHECK_NUM_ARGS_LESS(NUM, LABEL) \
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if (argc < i + (NUM)) { \
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@ -614,15 +626,15 @@ static int ValidateCommandLine(int argc, const char* argv[],
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// Parses command-line arguments to fill up config object. Also performs some
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// semantic checks.
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static int ParseCommandLine(int argc, const char* argv[],
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WebPMuxConfig* config) {
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static int ParseCommandLine(Config* config) {
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int i = 0;
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int feature_arg_index = 0;
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int ok = 1;
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int argc = config->argc_;
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const char* const* argv = config->argv_;
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while (i < argc) {
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Feature* const feature = &config->feature_;
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FeatureArg* const arg = &feature->args_[feature_arg_index];
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FeatureArg* const arg = &config->args_[feature_arg_index];
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if (argv[i][0] == '-') { // One of the action types or output.
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if (!strcmp(argv[i], "-set")) {
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if (ACTION_IS_NIL) {
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@ -638,8 +650,8 @@ static int ParseCommandLine(int argc, const char* argv[],
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} else {
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ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
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}
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if (FEATURETYPE_IS_NIL || feature->type_ == FEATURE_DURATION) {
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feature->type_ = FEATURE_DURATION;
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if (FEATURETYPE_IS_NIL || config->type_ == FEATURE_DURATION) {
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config->type_ = FEATURE_DURATION;
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} else {
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ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
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}
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@ -656,7 +668,7 @@ static int ParseCommandLine(int argc, const char* argv[],
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} else if (!strcmp(argv[i], "-strip")) {
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if (ACTION_IS_NIL) {
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config->action_type_ = ACTION_STRIP;
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feature->arg_count_ = 0;
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config->arg_count_ = 0;
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} else {
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ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
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}
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@ -668,8 +680,8 @@ static int ParseCommandLine(int argc, const char* argv[],
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} else {
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ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
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}
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if (FEATURETYPE_IS_NIL || feature->type_ == FEATURE_ANMF) {
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feature->type_ = FEATURE_ANMF;
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if (FEATURETYPE_IS_NIL || config->type_ == FEATURE_ANMF) {
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config->type_ = FEATURE_ANMF;
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} else {
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ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
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}
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@ -685,8 +697,8 @@ static int ParseCommandLine(int argc, const char* argv[],
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} else {
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ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
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}
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if (FEATURETYPE_IS_NIL || feature->type_ == FEATURE_ANMF) {
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feature->type_ = FEATURE_ANMF;
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if (FEATURETYPE_IS_NIL || config->type_ == FEATURE_ANMF) {
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config->type_ = FEATURE_ANMF;
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} else {
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ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
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}
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@ -705,7 +717,7 @@ static int ParseCommandLine(int argc, const char* argv[],
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ERROR_GOTO1("ERROR: Multiple actions specified.\n", ErrParse);
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} else {
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config->action_type_ = ACTION_INFO;
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feature->arg_count_ = 0;
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config->arg_count_ = 0;
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config->input_ = argv[i + 1];
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}
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i += 2;
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@ -741,7 +753,7 @@ static int ParseCommandLine(int argc, const char* argv[],
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if (!strcmp(argv[i], "icc") || !strcmp(argv[i], "exif") ||
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!strcmp(argv[i], "xmp")) {
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if (FEATURETYPE_IS_NIL) {
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feature->type_ = (!strcmp(argv[i], "icc")) ? FEATURE_ICCP :
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config->type_ = (!strcmp(argv[i], "icc")) ? FEATURE_ICCP :
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(!strcmp(argv[i], "exif")) ? FEATURE_EXIF : FEATURE_XMP;
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} else {
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ERROR_GOTO1("ERROR: Multiple features specified.\n", ErrParse);
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@ -757,7 +769,7 @@ static int ParseCommandLine(int argc, const char* argv[],
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} else if (!strcmp(argv[i], "frame") &&
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(config->action_type_ == ACTION_GET)) {
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CHECK_NUM_ARGS_LESS(2, ErrParse);
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feature->type_ = FEATURE_ANMF;
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config->type_ = FEATURE_ANMF;
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arg->params_ = argv[i + 1];
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++feature_arg_index;
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i += 2;
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@ -777,9 +789,8 @@ static int ParseCommandLine(int argc, const char* argv[],
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}
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// Additional checks after config is filled.
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static int ValidateConfig(WebPMuxConfig* config) {
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static int ValidateConfig(Config* const config) {
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int ok = 1;
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Feature* const feature = &config->feature_;
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// Action.
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if (ACTION_IS_NIL) {
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@ -795,7 +806,7 @@ static int ValidateConfig(WebPMuxConfig* config) {
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if (config->input_ == NULL) {
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if (config->action_type_ != ACTION_SET) {
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ERROR_GOTO1("ERROR: No input file specified.\n", ErrValidate2);
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} else if (feature->type_ != FEATURE_ANMF) {
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} else if (config->type_ != FEATURE_ANMF) {
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ERROR_GOTO1("ERROR: No input file specified.\n", ErrValidate2);
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}
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}
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@ -809,29 +820,63 @@ static int ValidateConfig(WebPMuxConfig* config) {
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return ok;
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}
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// Create config object from command-line arguments.
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static int InitializeConfig(int argc, const char* argv[],
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WebPMuxConfig* config) {
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int num_feature_args = 0;
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int ok = 1;
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#define MAX_ARGC 16384
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static int SetArguments(int argc, const char* argv[],
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Config* const config) {
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assert(config != NULL);
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memset(config, 0, sizeof(*config));
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WebPDataInit(&config->argv_data_);
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if (argc == 1 && argv[0][0] != '-') {
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char* cur;
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const char sep[] = " \t\r\n\f\v";
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if (!ReadFileToWebPData(argv[0], &config->argv_data_)) {
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return 0;
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}
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config->own_argv_ = 1;
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config->argv_ = (const char**)malloc(MAX_ARGC * sizeof(*config->argv_));
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if (config->argv_ == NULL) return 0;
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argc = 0;
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for (cur = strtok((char*)config->argv_data_.bytes, sep);
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cur != NULL;
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cur = strtok(NULL, sep)) {
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if (argc == MAX_ARGC) {
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fprintf(stderr, "ERROR: Arguments limit %d reached\n", MAX_ARGC);
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return 0;
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}
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assert(strlen(cur) != 0);
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config->argv_[argc++] = cur;
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}
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config->argc_ = argc;
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} else {
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config->argc_ = argc;
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config->argv_ = argv;
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config->own_argv_ = 0;
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}
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return 1;
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}
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// Create config object from command-line arguments.
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static int InitializeConfig(int argc, const char* argv[],
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Config* const config) {
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int num_feature_args = 0;
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int ok = SetArguments(argc, argv, config);
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if (!ok) return 0;
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// Validate command-line arguments.
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if (!ValidateCommandLine(argc, argv, &num_feature_args)) {
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if (!ValidateCommandLine(config, &num_feature_args)) {
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ERROR_GOTO1("Exiting due to command-line parsing error.\n", Err1);
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}
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config->feature_.arg_count_ = num_feature_args;
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config->feature_.args_ =
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(FeatureArg*)calloc(num_feature_args, sizeof(*config->feature_.args_));
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if (config->feature_.args_ == NULL) {
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config->arg_count_ = num_feature_args;
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config->args_ = (FeatureArg*)calloc(num_feature_args, sizeof(*config->args_));
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if (config->args_ == NULL) {
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ERROR_GOTO1("ERROR: Memory allocation error.\n", Err1);
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}
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// Parse command-line.
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if (!ParseCommandLine(argc, argv, config) || !ValidateConfig(config)) {
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if (!ParseCommandLine(config) || !ValidateConfig(config)) {
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ERROR_GOTO1("Exiting due to command-line parsing error.\n", Err1);
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}
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@ -847,7 +892,7 @@ static int InitializeConfig(int argc, const char* argv[],
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//------------------------------------------------------------------------------
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// Processing.
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static int GetFrame(const WebPMux* mux, const WebPMuxConfig* config) {
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static int GetFrame(const WebPMux* mux, const Config* config) {
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WebPMuxError err = WEBP_MUX_OK;
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WebPMux* mux_single = NULL;
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int num = 0;
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@ -857,7 +902,7 @@ static int GetFrame(const WebPMux* mux, const WebPMuxConfig* config) {
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WebPMuxFrameInfo info;
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WebPDataInit(&info.bitstream);
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num = ExUtilGetInt(config->feature_.args_[0].params_, 10, &parse_error);
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num = ExUtilGetInt(config->args_[0].params_, 10, &parse_error);
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if (num < 0) {
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ERROR_GOTO1("ERROR: Frame/Fragment index must be non-negative.\n", ErrGet);
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}
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@ -891,18 +936,17 @@ static int GetFrame(const WebPMux* mux, const WebPMuxConfig* config) {
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}
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// Read and process config.
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static int Process(const WebPMuxConfig* config) {
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static int Process(const Config* config) {
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WebPMux* mux = NULL;
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WebPData chunk;
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WebPMuxError err = WEBP_MUX_OK;
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int ok = 1;
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const Feature* const feature = &config->feature_;
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switch (config->action_type_) {
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case ACTION_GET: {
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ok = CreateMux(config->input_, &mux);
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if (!ok) goto Err2;
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switch (feature->type_) {
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switch (config->type_) {
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case FEATURE_ANMF:
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ok = GetFrame(mux, config);
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break;
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@ -910,10 +954,10 @@ static int Process(const WebPMuxConfig* config) {
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case FEATURE_ICCP:
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case FEATURE_EXIF:
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case FEATURE_XMP:
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err = WebPMuxGetChunk(mux, kFourccList[feature->type_], &chunk);
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err = WebPMuxGetChunk(mux, kFourccList[config->type_], &chunk);
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if (err != WEBP_MUX_OK) {
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ERROR_GOTO3("ERROR (%s): Could not get the %s.\n",
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ErrorString(err), kDescriptions[feature->type_], Err2);
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ErrorString(err), kDescriptions[config->type_], Err2);
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}
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ok = WriteData(config->output_, &chunk);
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break;
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@ -925,7 +969,7 @@ static int Process(const WebPMuxConfig* config) {
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break;
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}
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case ACTION_SET: {
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switch (feature->type_) {
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switch (config->type_) {
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case FEATURE_ANMF: {
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int i;
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WebPMuxAnimParams params = { 0xFFFFFFFF, 0 };
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@ -934,11 +978,11 @@ static int Process(const WebPMuxConfig* config) {
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ERROR_GOTO2("ERROR (%s): Could not allocate a mux object.\n",
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ErrorString(WEBP_MUX_MEMORY_ERROR), Err2);
|
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}
|
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for (i = 0; i < feature->arg_count_; ++i) {
|
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switch (feature->args_[i].subtype_) {
|
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for (i = 0; i < config->arg_count_; ++i) {
|
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switch (config->args_[i].subtype_) {
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case SUBTYPE_BGCOLOR: {
|
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uint32_t bgcolor;
|
||||
ok = ParseBgcolorArgs(feature->args_[i].params_, &bgcolor);
|
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ok = ParseBgcolorArgs(config->args_[i].params_, &bgcolor);
|
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if (!ok) {
|
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ERROR_GOTO1("ERROR: Could not parse the background color \n",
|
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Err2);
|
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@ -949,7 +993,7 @@ static int Process(const WebPMuxConfig* config) {
|
||||
case SUBTYPE_LOOP: {
|
||||
int parse_error = 0;
|
||||
const int loop_count =
|
||||
ExUtilGetInt(feature->args_[i].params_, 10, &parse_error);
|
||||
ExUtilGetInt(config->args_[i].params_, 10, &parse_error);
|
||||
if (loop_count < 0 || loop_count > 65535) {
|
||||
// Note: This is only a 'necessary' condition for loop_count
|
||||
// to be valid. The 'sufficient' conditioned in checked in
|
||||
@ -965,10 +1009,10 @@ static int Process(const WebPMuxConfig* config) {
|
||||
case SUBTYPE_ANMF: {
|
||||
WebPMuxFrameInfo frame;
|
||||
frame.id = WEBP_CHUNK_ANMF;
|
||||
ok = ReadFileToWebPData(feature->args_[i].filename_,
|
||||
ok = ReadFileToWebPData(config->args_[i].filename_,
|
||||
&frame.bitstream);
|
||||
if (!ok) goto Err2;
|
||||
ok = ParseFrameArgs(feature->args_[i].params_, &frame);
|
||||
ok = ParseFrameArgs(config->args_[i].params_, &frame);
|
||||
if (!ok) {
|
||||
WebPDataClear(&frame.bitstream);
|
||||
ERROR_GOTO1("ERROR: Could not parse frame properties.\n",
|
||||
@ -1001,13 +1045,13 @@ static int Process(const WebPMuxConfig* config) {
|
||||
case FEATURE_XMP: {
|
||||
ok = CreateMux(config->input_, &mux);
|
||||
if (!ok) goto Err2;
|
||||
ok = ReadFileToWebPData(feature->args_[0].filename_, &chunk);
|
||||
ok = ReadFileToWebPData(config->args_[0].filename_, &chunk);
|
||||
if (!ok) goto Err2;
|
||||
err = WebPMuxSetChunk(mux, kFourccList[feature->type_], &chunk, 1);
|
||||
err = WebPMuxSetChunk(mux, kFourccList[config->type_], &chunk, 1);
|
||||
free((void*)chunk.bytes);
|
||||
if (err != WEBP_MUX_OK) {
|
||||
ERROR_GOTO3("ERROR (%s): Could not set the %s.\n",
|
||||
ErrorString(err), kDescriptions[feature->type_], Err2);
|
||||
ErrorString(err), kDescriptions[config->type_], Err2);
|
||||
}
|
||||
break;
|
||||
}
|
||||
@ -1043,11 +1087,11 @@ static int Process(const WebPMuxConfig* config) {
|
||||
for (i = 0; i < num_frames; ++i) durations[i] = -1;
|
||||
|
||||
// Parse intervals to process.
|
||||
for (i = 0; i < feature->arg_count_; ++i) {
|
||||
for (i = 0; i < config->arg_count_; ++i) {
|
||||
int k;
|
||||
int args[3];
|
||||
int duration, start, end;
|
||||
const int nb_args = ExUtilGetInts(feature->args_[i].params_,
|
||||
const int nb_args = ExUtilGetInts(config->args_[i].params_,
|
||||
10, 3, args);
|
||||
ok = (nb_args >= 1);
|
||||
if (!ok) goto Err3;
|
||||
@ -1105,12 +1149,12 @@ static int Process(const WebPMuxConfig* config) {
|
||||
case ACTION_STRIP: {
|
||||
ok = CreateMux(config->input_, &mux);
|
||||
if (!ok) goto Err2;
|
||||
if (feature->type_ == FEATURE_ICCP || feature->type_ == FEATURE_EXIF ||
|
||||
feature->type_ == FEATURE_XMP) {
|
||||
err = WebPMuxDeleteChunk(mux, kFourccList[feature->type_]);
|
||||
if (config->type_ == FEATURE_ICCP || config->type_ == FEATURE_EXIF ||
|
||||
config->type_ == FEATURE_XMP) {
|
||||
err = WebPMuxDeleteChunk(mux, kFourccList[config->type_]);
|
||||
if (err != WEBP_MUX_OK) {
|
||||
ERROR_GOTO3("ERROR (%s): Could not strip the %s.\n",
|
||||
ErrorString(err), kDescriptions[feature->type_], Err2);
|
||||
ErrorString(err), kDescriptions[config->type_], Err2);
|
||||
}
|
||||
} else {
|
||||
ERROR_GOTO1("ERROR: Invalid feature for action 'strip'.\n", Err2);
|
||||
@ -1140,7 +1184,7 @@ static int Process(const WebPMuxConfig* config) {
|
||||
// Main.
|
||||
|
||||
int main(int argc, const char* argv[]) {
|
||||
WebPMuxConfig config;
|
||||
Config config;
|
||||
int ok = InitializeConfig(argc - 1, argv + 1, &config);
|
||||
if (ok) {
|
||||
ok = Process(&config);
|
||||
|
||||
Reference in New Issue
Block a user