From 0154696753e52a4475fd4a54f7a79e6bff959518 Mon Sep 17 00:00:00 2001 From: Moritz Bunkus Date: Wed, 17 Mar 2004 19:51:30 +0000 Subject: [PATCH] Copied librff into mkvtoolnix. --- librmff/COPYING | 504 ++++++++++++++++++++++++++++++++ librmff/Makefile | 46 +++ librmff/README | 10 + librmff/config.h | 2 + librmff/librmff.h | 321 +++++++++++++++++++++ librmff/mb_file_io.c | 211 ++++++++++++++ librmff/mb_file_io.h | 49 ++++ librmff/os.h | 80 ++++++ librmff/rmff.c | 559 ++++++++++++++++++++++++++++++++++++ librmff/testrmff/Makefile | 32 +++ librmff/testrmff/testrmff.c | 53 ++++ 11 files changed, 1867 insertions(+) create mode 100644 librmff/COPYING create mode 100644 librmff/Makefile create mode 100644 librmff/README create mode 100644 librmff/config.h create mode 100644 librmff/librmff.h create mode 100644 librmff/mb_file_io.c create mode 100644 librmff/mb_file_io.h create mode 100644 librmff/os.h create mode 100644 librmff/rmff.c create mode 100644 librmff/testrmff/Makefile create mode 100644 librmff/testrmff/testrmff.c diff --git a/librmff/COPYING b/librmff/COPYING new file mode 100644 index 000000000..223ede7de --- /dev/null +++ b/librmff/COPYING @@ -0,0 +1,504 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. 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Change/overwrite as needed. +prefix = /usr/local +libdir = $(prefix)/lib +includedir = $(prefix)/include + +# Don't change these settings +SOURCES = rmff.c mb_file_io.c +HEADERS = librmff.h mb_file_io.h +OBJECTS := $(patsubst %.c,%.o,$(SOURCES)) + +CFLAGS += -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 + +all: librmff.a + +clean: + rm -f $(OBJECTS) librmff.a + +%.o: %.c librmff.h + $(CC) -c -o $@ $(CFLAGS) $(INCLUDES) $< + +librmff.a: $(OBJECTS) + $(AR) rcvu $@ $? + $(RANLIB) $@ + +install: all + @if ! test -d $(includedir); then \ + echo $(INSTALL) -d $(includedir); \ + $(INSTALL) -d $(includedir); \ + fi + @for i in $(HEADERS); do \ + echo $(INSTALL) $$i $(includedir); \ + $(INSTALL) $$i $(includedir); \ + done + @if ! test -d $(libdir); then \ + echo $(INSTALL) -d $(libdir); \ + $(INSTALL) -d $(libdir); \ + fi + $(INSTALL) librmff.a $(libdir) diff --git a/librmff/README b/librmff/README new file mode 100644 index 000000000..25a93c6fb --- /dev/null +++ b/librmff/README @@ -0,0 +1,10 @@ +librmff 0.1 +=========== + +librmff is short for 'RealMedia file format access library'. It aims +at providing the programmer an easy way to read and write RealMedia +files. It does not contain any codecs for audio/video handling. + +The library was written by Moritz Bunkus . It is +licensed under the terms of the GNU Lesser General Public License (GNU +LGPL) which can be found in the file COPYING. diff --git a/librmff/config.h b/librmff/config.h new file mode 100644 index 000000000..4064380e1 --- /dev/null +++ b/librmff/config.h @@ -0,0 +1,2 @@ +/* big endian system */ +/* #undef WORDS_BIGENDIAN */ diff --git a/librmff/librmff.h b/librmff/librmff.h new file mode 100644 index 000000000..a5ce09bf3 --- /dev/null +++ b/librmff/librmff.h @@ -0,0 +1,321 @@ +/* + * librmff.h + * + * Copyright (C) Moritz Bunkus - March 2004 + * + * librmff is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 2.1, or (at your option) + * any later version. + * + * librmff is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +/** \file librmff.h + * \brief The RealMedia file format library + * \author Moritz Bunkus + */ + +#ifndef __RMFF_H +#define __RMFF_H + +#if defined(__cplusplus) +extern "C" { +#endif + +#include +#include + +#include "mb_file_io.h" + +/** \brief Contains the PROP file header. + * This header is mandatory for a RealMedia file. It contains statistical + * and global data. Each member is in big endian. + */ +typedef struct { + uint32_t max_bit_rate; + uint32_t avg_bit_rate; + uint32_t max_packet_size; + uint32_t avg_packet_size; + uint32_t num_packets; + uint32_t duration; + uint32_t preroll; + uint32_t index_offset; + uint32_t data_offset; + uint16_t num_streams; + uint16_t flags; +} rmff_prop_t; + +/** \brief Comments about the file in question. + * This structure contains the parsed values of the CONT header. These + * strings must not be modified by the application. The function + * rmff_set_cont_header(const_char*,const_char*,const_char*,const_char*) + * must be used instead. + */ +typedef struct { + char *title; + char *author; + char *copyright; + char *comment; +} rmff_cont_t; + +typedef struct { + uint16_t id; + uint32_t max_bit_rate; + uint32_t avg_bit_rate; + uint32_t max_packet_size; + uint32_t avg_packet_size; + uint32_t start_time; + uint32_t preroll; + uint32_t duration; + char *name; + char *mime_type; + uint32_t type_specific_size; + unsigned char *type_specific_data; +} rmff_mdpr_t; + +typedef struct __attribute__((__packed__)) real_video_props_t { + uint32_t size; + uint32_t fourcc1; + uint32_t fourcc2; + uint16_t width; + uint16_t height; + uint16_t bpp; + uint32_t unknown1; + uint32_t fps; + uint32_t type1; + uint32_t type2; +} real_video_props_t; + +typedef struct __attribute__((__packed__)) real_audio_v4_props_t { + uint32_t fourcc1; /* '.', 'r', 'a', 0xfd */ + uint16_t version1; /* 4 or 5 */ + uint16_t unknown1; /* 00 00 */ + uint32_t fourcc2; /* .ra4 or .ra5 */ + uint32_t unknown2; /* ??? */ + uint16_t version2; /* 4 or 5 */ + uint32_t header_size; /* == 0x4e */ + uint16_t flavor; /* codec flavor id */ + uint32_t coded_frame_size; /* coded frame size */ + uint32_t unknown3; /* big number */ + uint32_t unknown4; /* bigger number */ + uint32_t unknown5; /* yet another number */ + uint16_t sub_packet_h; + uint16_t frame_size; + uint16_t sub_packet_size; + uint16_t unknown6; /* 00 00 */ + uint16_t sample_rate; + uint16_t unknown8; /* 0 */ + uint16_t sample_size; + uint16_t channels; +} real_audio_v4_props_t; + +typedef struct __attribute__((__packed__)) real_audio_v5_props_t { + uint32_t fourcc1; /* '.', 'r', 'a', 0xfd */ + uint16_t version1; /* 4 or 5 */ + uint16_t unknown1; /* 00 00 */ + uint32_t fourcc2; /* .ra4 or .ra5 */ + uint32_t unknown2; /* ??? */ + uint16_t version2; /* 4 or 5 */ + uint32_t header_size; /* == 0x4e */ + uint16_t flavor; /* codec flavor id */ + uint32_t coded_frame_size; /* coded frame size */ + uint32_t unknown3; /* big number */ + uint32_t unknown4; /* bigger number */ + uint32_t unknown5; /* yet another number */ + uint16_t sub_packet_h; + uint16_t frame_size; + uint16_t sub_packet_size; + uint16_t unknown6; /* 00 00 */ + uint8_t unknown7[6]; /* 0, srate, 0 */ + uint16_t sample_rate; + uint16_t unknown8; /* 0 */ + uint16_t sample_size; + uint16_t channels; + uint32_t genr; /* "genr" */ + uint32_t fourcc3; /* fourcc */ +} real_audio_v5_props_t; + +typedef struct rmff_frame_t { + void *data; + uint32_t size; + int allocated_by_rmff; + + uint16_t id; + uint32_t timecode; + uint8_t reserved; + uint8_t flags; +} rmff_frame_t; + +/** \brief Unknown track type. */ +#define RMFF_TRACK_TYPE_UNKNOWN 0 +/** \brief The track contains audio data. */ +#define RMFF_TRACK_TYPE_AUDIO 1 +/** \brief The track contains video data. */ +#define RMFF_TRACK_TYPE_VIDEO 2 + +struct rmff_file_t; + +typedef struct { + uint32_t id; + int type; + rmff_mdpr_t mdpr_header; + int is_big_endian; + + struct rmff_file_t *file; +} rmff_track_t; + +typedef struct { + mb_file_io_t *io; + void *handle; + char *name; + int64_t size; + + int headers_read; + + rmff_prop_t prop_header; + int prop_header_found; + rmff_cont_t cont_header; + int cont_header_found; + int64_t first_data_header_offset; + int64_t next_data_header_offset; + uint32_t num_packets_in_chunk; + uint32_t num_packets_read; + int is_big_endian; + + rmff_track_t *tracks; + int num_tracks; +} rmff_file_t; + +/** \brief No error has occured. */ +#define RMFF_ERR_OK 0 +/** \brief The file is not a valid RealMedia file. */ +#define RMFF_ERR_NOT_RMFF -1 +/** \brief The structures/data read from the file were invalid. */ +#define RMFF_ERR_DATA -2 +/** \brief The end of the file has been reached. */ +#define RMFF_ERR_EOF -3 +/** \brief An error occured during file I/O. */ +#define RMFF_ERR_IO -4 +/** \brief The parameters were invalid. */ +#define RMFF_ERR_PARAMETERS -5 +/** \brief An error has occured for which \c errno should be consulted. */ +#define RMFF_ERR_CHECK_ERRNO -6 + +#define rmffFOURCC(a, b, c, d) (uint32_t)((((unsigned char)a) << 24) + \ + (((unsigned char)b) << 16) + \ + (((unsigned char)c) << 8) + \ + ((unsigned char)d)) + +/** \brief Opens a RealMedia file for reading or writing. + * Can be used to open an existing file for reading or for creating a new + * file. The file headers will neither be read nor written automatically. + * This function uses the standard file I/O functions provided by the + * current operating system. + * + * \param path the name of the file that should be opened + * \param mode either ::RMFF_OPEN_MODE_READING or ::RMFF_OPEN_MODE_WRITING + * \returns a pointer to \c rmff_file_t structure or \c NULL if an error + * occured. In the latter case ::rmff_last_error will be set. + * \see rmff_open_file_with_io + */ +rmff_file_t *rmff_open_file(const char *path, int mode); + +/** \brief Opens a RealMedia file for reading or writing. + * Can be used to open an existing file for reading or for creating a new + * file. The file headers will neither be read nor written automatically. + * This function uses I/O functions provided by the \c io parameter. + * + * \param path the name of the file that should be opened + * \param mode either ::RMFF_OPEN_MODE_READING or ::RMFF_OPEN_MODE_WRITING + * \param io a set of I/O functions + * \returns a pointer to a rmff_file_t structure or \c NULL if an error + * occured. In the latter case ::rmff_last_error will be set. + * \see rmff_open_file + */ +rmff_file_t *rmff_open_file_with_io(const char *path, int mode, + mb_file_io_t *io); + +/** \brief Close the file and release all resources. + * Closes the file and releases all resources associated with it, including + * the \c file structure. If the file was open for writing then + * rmff_write_headers() should be called prior to closing the file as + * \c rmff_close_file does not fix the headers itself. + * + * \param file The file to close. + */ +void rmff_close_file(rmff_file_t *file); + +/** \brief Reads the file and track headers. + * This function should be called after directly after opening it for reading. + * It will try to read the file and track headers and position the file pointer + * right before the first data packet. + * + * \param file The file to read the headers from. + * \returns ::RMFF_ERR_OK on success and one of the other \c RMFF_ERR_* + * constants on error. + */ +int rmff_read_headers(rmff_file_t *file); + +/** \brief Retrieves the size of the next frame. + * \param file The file to read from. + * \returns the size of the following frame or one of the \c RMFF_ERR_* + * constants on error. + */ +int rmff_get_next_frame_size(rmff_file_t *file); + +/** \brief Reads the next frame from the file. + * The frame must be released by rmff_release_frame(rmff_frame_t*). + * \param file The file to read from. + * \param buffer A buffer to read the frame into. This parameter may be + * \c NULL in which case the buffer will be allocated by the library. + * If the application provides the buffer it must be large enough. + * The function rmff_get_next_frame_size() can be used in this case. + * \returns a pointer to a ::rmff_frame_t structure containing the frame + * and its metadata on success or \c NULL if the call failed. This frame + * must be freed with rmff_release_frame(rmff_frame_t*). + */ +rmff_frame_t *rmff_read_next_frame(rmff_file_t *file, void *buffer); + +/** \brief Frees all resources associated with a frame. + * If the frame buffer was allocated by the library it will be freed as well. + * \param frame The frame to free. + */ +void rmff_release_frame(rmff_frame_t *frame); + + + +/** \brief The error code of the last function call. + * Contains the last error code for a function that failed. If a function + * succeeded it usually does not reset \c rmff_last_error to \c RMFF_ERR_OK. + * This variable can contain one of the \c RMFF_ERR_* constants. + */ +extern int rmff_last_error; + +/** \brief The error message of the last function call. + * Contains the last error message for a function that failed. If a function + * succeeded it usually does not reset \c rmff_last_error_msg to \c NULL. + */ +extern const char *rmff_last_error_msg; + +/** \brief Map an error code to an error message. + * Returns the error message that corresponds to the error code. + * \param code the error code which must be one of the \c RMFF_ERR_* macros. + * \returns the error message or "Unknown error" for unknown error codes, + * but never \c NULL. + */ +const char *rmff_get_error_str(int code); + +#if defined(__cplusplus) +} +#endif + +#endif /* __RMFF_H */ diff --git a/librmff/mb_file_io.c b/librmff/mb_file_io.c new file mode 100644 index 000000000..e8f099575 --- /dev/null +++ b/librmff/mb_file_io.c @@ -0,0 +1,211 @@ +/* + * mb_file_io.c + * + * Copyright (C) Moritz Bunkus - March 2004 + * + * mb_file_io is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 2.1, or (at your option) + * any later version. + * + * mb_file_io is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include "os.h" + +#include +#include +#include +#include +#include + +#include "mb_file_io.h" + +#if defined(SYS_WINDOWS) +#include +#include +#include +#include +#include + +static void * +mb_std_file_open(const char *path, + int mode) { + DWORD access_mode, share_mode, disposition; + void *file; + + switch (mode) { + case MB_OPEN_MODE_READING: + access_mode = GENERIC_READ; + share_mode = FILE_SHARE_READ | FILE_SHARE_WRITE; + disposition = OPEN_EXISTING; + break; + case MB_OPEN_MODE_WRITING: + access_mode = GENERIC_WRITE; + share_mode = 0; + disposition = OPEN_ALWAYS; + break; + default: + return NULL; + } + + file = (void *)CreateFile(path, access_mode, share_mode, NULL, disposition, + 0, NULL); + if ((HANDLE)file == (HANDLE)0xFFFFFFFF) + return NULL; + return file; +} + +static int +mb_std_file_close(void *file) { + if (file == NULL) + return -1; + CloseHandle((HANDLE)file); + return 0; +} + +static int64_t +mb_std_file_tell(void *file) { + LONG high = 0; + DWORD low; + + if (file == NULL) + return -1; + low = SetFilePointer((HANDLE)file, 0, &high, FILE_CURRENT); + if ((low == INVALID_SET_FILE_POINTER) && (GetLastError() != NO_ERROR)) + return -1; + + return (((int64_t)high) << 32) | (int64_t)low; +} + +static int64_t +mb_std_file_seek(void *file, + int64_t offset, + int whence) { + DWORD method; + LONG high; + + if (file == NULL) + return -1; + switch (whence) { + case SEEK_SET: + method = FILE_BEGIN; + break; + case SEEK_CUR: + method = FILE_CURRENT; + break; + case SEEK_END: + method = FILE_END; + break; + default: + return -1; + } + + high = (LONG)(offset >> 32); + SetFilePointer((HANDLE)file, (LONG)(offset & 0xffffffff), &high, method); + return 0; +} + +static int64_t +mb_std_file_read(void *file, + void *buffer, + int64_t bytes) { + DWORD bytes_read; + + if (!ReadFile((HANDLE)file, buffer, bytes, &bytes_read, NULL)) + return -1; + + return bytes_read; +} + +static int64_t +mb_std_file_write(void *file, + const void *buffer, + int64_t bytes) { + DWORD bytes_written; + + if (!WriteFile((HANDLE)file, buffer, bytes, &bytes_written, NULL)) + bytes_written = 0; + + return bytes_written; +} + +#else /* SYS_WINDOWS */ + +static void * +mb_std_file_open(const char *path, + int mode) { + FILE *f; + const char *c_mode; + + if (mode == MB_OPEN_MODE_READING) + c_mode = "rb"; + else if (mode == MB_OPEN_MODE_WRITING) + c_mode = "wb"; + else + return NULL; + + f = fopen(path, c_mode); + return f; +} + +static int +mb_std_file_close(void *file) { + if (file == NULL) + return -1; + return fclose((FILE *)file); +} + +static int64_t +mb_std_file_read(void *file, + void *buffer, + int64_t bytes) { + if ((file == NULL) || (buffer == NULL) || (bytes < 0)) + return -1; + return fread(buffer, 1, bytes, (FILE *)file); +} + +static int64_t +mb_std_file_write(void *file, + const void *buffer, + int64_t bytes) { + if ((file == NULL) || (buffer == NULL) || (bytes < 0)) + return -1; + return fwrite(buffer, 1, bytes, (FILE *)file); +} + +static int64_t +mb_std_file_tell(void *file) { + if (file == NULL) + return -1; + return ftello((FILE *)file); +} + +static int64_t +mb_std_file_seek(void *file, + int64_t offset, + int whence) { + if ((file == NULL) || (offset < 0) || /* */ + ((whence != SEEK_SET) && (whence != SEEK_CUR) && + (whence != SEEK_END))) + return -1; + return fseeko((FILE *)file, offset, whence); +} +#endif /* SYS_WINDOWS */ + +mb_file_io_t std_mb_file_io = { + mb_std_file_open, + mb_std_file_close, + mb_std_file_read, + mb_std_file_write, + mb_std_file_tell, + mb_std_file_seek +}; diff --git a/librmff/mb_file_io.h b/librmff/mb_file_io.h new file mode 100644 index 000000000..abfd5a9a0 --- /dev/null +++ b/librmff/mb_file_io.h @@ -0,0 +1,49 @@ +/* + * mb_file_io.h + * + * Copyright (C) Moritz Bunkus - March 2004 + * + * mb_file_io is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 2.1, or (at your option) + * any later version. + * + * mb_file_io is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#ifndef __MB_FILE_IO_H +#define __MB_FILE_IO_H + +#include + +#define MB_OPEN_MODE_READING 0 +#define MB_OPEN_MODE_WRITING 1 + +typedef void *(*mb_file_open_t)(const char *path, int mode); +typedef int (*mb_file_close_t)(void *file); +typedef int64_t (*mb_file_read_t)(void *file, void *buffer, int64_t bytes); +typedef int64_t (*mb_file_write_t)(void *file, const void *buffer, + int64_t bytes); +typedef int64_t (*mb_file_tell_t)(void *file); +typedef int64_t (*mb_file_seek_t)(void *file, int64_t offset, int whence); + +typedef struct { + mb_file_open_t open; + mb_file_close_t close; + mb_file_read_t read; + mb_file_write_t write; + mb_file_tell_t tell; + mb_file_seek_t seek; +} mb_file_io_t; + +extern mb_file_io_t std_mb_file_io; + +#endif /* __MB_FILE_IO */ diff --git a/librmff/os.h b/librmff/os.h new file mode 100644 index 000000000..489aa138f --- /dev/null +++ b/librmff/os.h @@ -0,0 +1,80 @@ +#ifndef __OS_H +#define __OS_H + +#include "config.h" + +#if defined(_WIN32) || defined(WIN32) || defined(__CYGWIN__) || defined(__MINGW32__) +# define SYS_WINDOWS +# if defined __MINGW32__ +# define COMP_MINGW +# elif defined __CYGWIN__ +# define COMP_CYGWIN +# else +# define COMP_MSC +# endif +#elif defined(__APPLE__) +# define SYS_APPLE +#else +# define COMP_GCC +# define SYS_UNIX +# if defined(__bsdi__) || defined(__FreeBSD__) +# define SYS_BSD +# else +# define SYS_LINUX +# endif +#endif + +#if defined(COMP_MSC) +# define PACKAGE "mkvtoolnix" +# define VERSION "0.8.6" + +# define strncasecmp _strnicmp +# define strcasecmp _stricmp +# define nice(a) +# define vsnprintf _vsnprintf +# define vfprintf _vfprintf +#endif // COMP_MSC + +#if defined(COMP_MINGW) || defined(COMP_MSC) + +// For DLL stuff... +# if defined(MTX_DLL) +# if defined(MTX_DLL_EXPORT) +# define MTX_DLL_API __declspec(dllexport) +# else // MTX_DLL_EXPORT +# define MTX_DLL_API __declspec(dllimport) +# endif +# else // MTX_DLL +# define MTX_DLL_API +# endif + +# define LLD "%I64d" +# define LLU "%I64u" + +#else // COMP_MINGW || COMP_MSC + +# define MTX_DLL_API +# define LLD "%lld" +# define LLU "%llu" +#endif // COMP_MINGW || COMP_MSC + +#if defined(HAVE_STDINT_H) +#include +#endif // HAVE_STDINT_H +#if defined(HAVE_INTTYPES_H) +#include +#endif // HAVE_INTTYPES_H + +#if defined(SYS_WINDOWS) +# define PATHSEP '\\' +#else +# define PATHSEP '/' +#endif + +#if defined(WORDS_BIGENDIAN) && (WORDS_BIGENDIAN == 1) +# define ARCH_BIGENDIAN +#else +# define ARCH_LITTLEENDIAN +#endif + +#endif diff --git a/librmff/rmff.c b/librmff/rmff.c new file mode 100644 index 000000000..982bdf3b3 --- /dev/null +++ b/librmff/rmff.c @@ -0,0 +1,559 @@ +/* + * rmff.c + * + * Copyright (C) Moritz Bunkus - March 2004 + * + * librmff is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published by + * the Free Software Foundation; either version 2.1, or (at your option) + * any later version. + * + * librmff is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library; see the file COPYING. If not, write to + * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include +#include +#include +#include +#include + +#include "librmff.h" + +int rmff_last_error = RMFF_ERR_OK; +const char *rmff_last_error_msg = NULL; +static const char *rmff_std_error_messages[] = { + "No error", + "File is not a RealMedia file", + "Inconsistent data found in file", + "End of file reached", + "Input/output error", + "Invalid parameters" +}; + +const char * +rmff_get_error_str(int code) { + code *= -1; + if ((code >= 0) && (code <= 5)) + return rmff_std_error_messages[code]; + else + return "Unknown error"; +} + +static int +set_error(int error_number, + const char *error_msg, + int return_value) { + rmff_last_error = error_number; + if (error_msg == NULL) + rmff_last_error_msg = rmff_get_error_str(error_number); + else + rmff_last_error_msg = error_msg; + + return return_value; +} + +static uint16_t +get_uint16_be(const void *buf) { + uint16_t ret; + unsigned char *tmp; + + tmp = (unsigned char *) buf; + + ret = tmp[0] & 0xff; + ret = (ret << 8) + (tmp[1] & 0xff); + + return ret; +} + +static uint32_t +get_uint32_be(const void *buf) { + uint32_t ret; + unsigned char *tmp; + + tmp = (unsigned char *) buf; + + ret = tmp[0] & 0xff; + ret = (ret << 8) + (tmp[1] & 0xff); + ret = (ret << 8) + (tmp[2] & 0xff); + ret = (ret << 8) + (tmp[3] & 0xff); + + return ret; +} + +static void +put_uint16_be(void *buf, + uint16_t value) { + unsigned char *tmp; + + tmp = (unsigned char *) buf; + + tmp[1] = value & 0xff; + tmp[0] = (value >>= 8) & 0xff; +} + +static void +put_uint32_be(void *buf, + uint32_t value) { + unsigned char *tmp; + + tmp = (unsigned char *) buf; + + tmp[3] = value & 0xff; + tmp[2] = (value >>= 8) & 0xff; + tmp[1] = (value >>= 8) & 0xff; + tmp[0] = (value >>= 8) & 0xff; +} + +#define read_uint8() file_read_uint8(io, fh) +#define read_uint16_be() file_read_uint16_be(io, fh) +#define read_uint32_be() file_read_uint32_be(io, fh) +#define read_uint16_be_to(addr) put_uint16_be(addr, read_uint16_be()) +#define read_uint32_be_to(addr) put_uint32_be(addr, read_uint32_be()) +#define get_fourcc(b) get_uint32_be(b) + +static uint8_t +file_read_uint8(mb_file_io_t *io, + void *fh) { + unsigned char tmp; + + io->read(fh, &tmp, 1); + return tmp; +} + +static uint16_t +file_read_uint16_be(mb_file_io_t *io, + void *fh) { + unsigned char tmp[2]; + + io->read(fh, tmp, 2); + return get_uint16_be(tmp); +} + +static uint32_t +file_read_uint32_be(mb_file_io_t *io, + void *fh) { + unsigned char tmp[4]; + + io->read(fh, tmp, 4); + return get_uint32_be(tmp); +} + +void +die(const char *fmt, + ...) { + va_list ap; + + fprintf(stderr, "'die' called: "); + va_start(ap, fmt); + vfprintf(stderr, fmt, ap); + va_end(ap); + fprintf(stderr, "\n"); + exit(1); +} + +#define safestrdup(s) _safestrdup(s, __FILE__, __LINE__) +#define safememdup(s, b) _safememdup(s, b, __FILE__, __LINE__) +#define safemalloc(s) _safemalloc(s, __FILE__, __LINE__) +#define safecalloc(s) _safecalloc(s, __FILE__, __LINE__) +#define saferealloc(s, b) _saferealloc(s, b, __FILE__, __LINE__) +#define safefree(s) { if ((s) != NULL) free(s); } + +static char * +_safestrdup(const char *s, + const char *file, + int line) { + char *copy; + + if (s == NULL) + return NULL; + + copy = strdup(s); + if (copy == NULL) + die("safestrdup() called from file %s, line %d: strdup() " + "returned NULL for '%s'.", file, line, s); + + return copy; +} + +/* static void * */ +/* _safememdup(const void *s, */ +/* size_t size, */ +/* const char *file, */ +/* int line) { */ +/* void *copy; */ + +/* if (s == NULL) */ +/* return NULL; */ + +/* copy = malloc(size); */ +/* if (copy == NULL) */ +/* die("safememdup() called from file %s, line %d: malloc() " */ +/* "returned NULL for a size of %d bytes.", file, line, size); */ +/* memcpy(copy, s, size); */ + +/* return copy; */ +/* } */ + +static void * +_safemalloc(size_t size, + const char *file, + int line) { + void *mem; + + mem = malloc(size); + if (mem == NULL) + die("safemalloc() called from file %s, line %d: malloc() " + "returned NULL for a size of %d bytes.", file, line, size); + + return mem; +} + +static void *_safecalloc(size_t size, + const char *file, + int line) { + void *mem; + + mem = calloc(size, 1); + if (mem == NULL) + die("safemalloc() called from file %s, line %d: malloc() " + "returned NULL for a size of %d bytes.", file, line, size); + + return mem; +} + +static void * +_saferealloc(void *mem, + size_t size, + const char *file, + int line) { + mem = realloc(mem, size); + if (mem == NULL) + die("saferealloc() called from file %s, line %d: realloc() " + "returned NULL for a size of %d bytes.", file, line, size); + + return mem; +} + +rmff_file_t * +rmff_open_file(const char *path, + int mode) { + return rmff_open_file_with_io(path, mode, &std_mb_file_io); +} + +rmff_file_t * +rmff_open_file_with_io(const char *path, + int mode, + mb_file_io_t *io) { + rmff_file_t *file; + void *file_h; + char buf[5]; + + if ((path == NULL) || (io == NULL) || + ((mode != MB_OPEN_MODE_READING) && (mode != MB_OPEN_MODE_WRITING))) + return (rmff_file_t *)set_error(RMFF_ERR_PARAMETERS, NULL, 0); + + file_h = io->open(path, mode); + if (file_h == NULL) + return NULL; + + buf[4] = 0; + if ((io->read(file_h, buf, 4) != 4) || + strcmp(buf, ".RMF")) { + io->close(file_h); + return (rmff_file_t *)set_error(RMFF_ERR_NOT_RMFF, NULL, 0); + } + + file = (rmff_file_t *)safecalloc(sizeof(rmff_file_t)); + file->handle = file_h; + file->name = safestrdup(path); + file->io = io; + io->seek(file_h, 0, SEEK_END); + file->size = io->tell(file_h); + io->seek(file_h, 4, SEEK_SET); + + return file; +} + +void +rmff_free_track_data(rmff_track_t *track) { + if (track == NULL) + return; + safefree(track->mdpr_header.name); + safefree(track->mdpr_header.mime_type); + safefree(track->mdpr_header.type_specific_data); +} + +void +rmff_close_file(rmff_file_t *file) { + int i; + + if (file == NULL) + return; + + safefree(file->name); + for (i = 0; i < file->num_tracks; i++) + rmff_free_track_data(&file->tracks[i]); + safefree(file->tracks); + safefree(file->cont_header.title); + safefree(file->cont_header.author); + safefree(file->cont_header.copyright); + safefree(file->cont_header.comment); + file->io->close(file->handle); + safefree(file); +} + + +#define skip(num) { if (io->seek(fh, num, SEEK_CUR) != 0) \ + return set_error(RMFF_ERR_IO, NULL, -1); } + +int +rmff_read_headers(rmff_file_t *file) { + mb_file_io_t *io; + void *fh; + uint32_t object_id, object_size, size; + uint16_t object_version; + rmff_prop_t *prop; + rmff_cont_t *cont; + rmff_mdpr_t *mdpr; + rmff_track_t track; + real_video_props_t *rvp; + real_audio_v4_props_t *ra4p; + + if (file == NULL) + return set_error(RMFF_ERR_PARAMETERS, NULL, RMFF_ERR_PARAMETERS); + if (file->headers_read) + return 0; + + io = file->io; + fh = file->handle; + if (io->seek(fh, 4, SEEK_SET)) + return set_error(RMFF_ERR_IO, NULL, -1); + + skip(4); /* header_size */ + skip(2); /* object_version */ + skip(4); /* file_version */ + skip(4); /* num_headers */ + + prop = &file->prop_header; + cont = &file->cont_header; + while (1) { + rmff_last_error = RMFF_ERR_OK; + object_id = read_uint32_be(); + object_size = read_uint32_be(); + object_version = read_uint16_be(); + if (rmff_last_error != RMFF_ERR_OK) + break; + + if (object_id == rmffFOURCC('P', 'R', 'O', 'P')) { + read_uint32_be_to(&prop->max_bit_rate); + read_uint32_be_to(&prop->avg_bit_rate); + read_uint32_be_to(&prop->max_packet_size); + read_uint32_be_to(&prop->avg_packet_size); + read_uint32_be_to(&prop->num_packets); + read_uint32_be_to(&prop->duration); + read_uint32_be_to(&prop->preroll); + read_uint32_be_to(&prop->index_offset); + read_uint32_be_to(&prop->data_offset); + read_uint16_be_to(&prop->num_streams); + read_uint16_be_to(&prop->flags); + file->prop_header_found = 1; + + } else if (object_id == rmffFOURCC('C', 'O', 'N', 'T')) { + if (file->cont_header_found) { + safefree(cont->title); + safefree(cont->author); + safefree(cont->copyright); + safefree(cont->comment); + } + memset(cont, 0, sizeof(rmff_cont_t)); + + size = read_uint16_be(); /* title_len */ + if (size > 0) { + cont->title = (char *)safemalloc(size + 1); + io->read(fh, cont->title, size); + } + size = read_uint16_be(); /* author_len */ + if (size > 0) { + cont->author = (char *)safemalloc(size + 1); + io->read(fh, cont->author, size); + } + size = read_uint16_be(); /* copyright_len */ + if (size > 0) { + cont->copyright = (char *)safemalloc(size + 1); + io->read(fh, cont->copyright, size); + } + size = read_uint16_be(); /* comment_len */ + if (size > 0) { + cont->comment = (char *)safemalloc(size + 1); + io->read(fh, cont->comment, size); + } + file->cont_header_found = 1; + + } else if (object_id == rmffFOURCC('M', 'D', 'P', 'R')) { + memset(&track, 0, sizeof(rmff_track_t)); + track.file = (struct rmff_file_t *)file; + mdpr = &track.mdpr_header; + read_uint16_be_to(&mdpr->id); + read_uint32_be_to(&mdpr->max_bit_rate); + read_uint32_be_to(&mdpr->avg_bit_rate); + read_uint32_be_to(&mdpr->max_packet_size); + read_uint32_be_to(&mdpr->avg_packet_size); + read_uint32_be_to(&mdpr->start_time); + read_uint32_be_to(&mdpr->preroll); + read_uint32_be_to(&mdpr->duration); + size = read_uint8(); /* stream_name_len */ + if (size > 0) { + mdpr->name = (char *)safemalloc(size + 1); + io->read(fh, mdpr->name, size); + } + size = read_uint8(); /* mime_type_len */ + if (size > 0) { + mdpr->mime_type = (char *)safemalloc(size + 1); + io->read(fh, mdpr->mime_type, size); + } + size = read_uint32_be(); /* type_specific_size */ + mdpr->type_specific_size = size; + if (size > 0) { + mdpr->type_specific_data = (unsigned char *)safemalloc(size); + io->read(fh, mdpr->type_specific_data, size); + } + + rvp = (real_video_props_t *)mdpr->type_specific_data; + ra4p = (real_audio_v4_props_t *)mdpr->type_specific_data; + if ((size >= sizeof(real_video_props_t)) && + (get_fourcc(&rvp->fourcc1) == rmffFOURCC('V', 'I', 'D', 'O'))) + track.type = RMFF_TRACK_TYPE_VIDEO; + else if ((size >= sizeof(real_audio_v4_props_t)) && + (get_fourcc(&ra4p->fourcc1) == + rmffFOURCC('.', 'r', 'a', 0xfd))) { + track.type = RMFF_TRACK_TYPE_AUDIO; + if ((get_uint16_be(&ra4p->version1) == 5) && + (size < sizeof(real_audio_v5_props_t))) + return set_error(RMFF_ERR_DATA, "RealAudio v5 data indicated but " + "data too small", RMFF_ERR_DATA); + } + + file->tracks = + (rmff_track_t *)saferealloc(file->tracks, (file->num_tracks + 1) * + sizeof(rmff_track_t)); + file->tracks[file->num_tracks] = track; + file->num_tracks++; + + } else if (object_id == rmffFOURCC('D', 'A', 'T', 'A')) { + file->num_packets_in_chunk = read_uint32_be(); + file->next_data_header_offset = read_uint32_be(); + file->first_data_header_offset = io->tell(fh) - (4 + 4 + 2); + break; + + } else { + /* Unknown header type */ + return set_error(RMFF_ERR_DATA, NULL, RMFF_ERR_DATA); + } + } + + if (file->prop_header_found && (file->first_data_header_offset > 0)) { + file->headers_read = 1; + return 0; + } + return set_error(RMFF_ERR_DATA, NULL, RMFF_ERR_DATA); +} + +int +rmff_get_next_frame_size(rmff_file_t *file) { + uint16_t object_version, length; + uint32_t object_id; + mb_file_io_t *io; + void *fh; + int result; + int64_t old_pos; + + if ((file == NULL) || (!file->headers_read) || (file->io == NULL) || + (file->handle == NULL)) + return set_error(RMFF_ERR_PARAMETERS, NULL, RMFF_ERR_PARAMETERS); + io = file->io; + fh = file->handle; + old_pos = io->tell(fh); + if ((file->size - old_pos) < 12) + return set_error(RMFF_ERR_EOF, NULL, RMFF_ERR_EOF); + + object_version = read_uint16_be(); + length = read_uint16_be(); + object_id = ((uint32_t)object_version) << 16 | length; + if (object_id == rmffFOURCC('D', 'A', 'T', 'A')) { + skip(4 + 4); /* packets_in_chunk, next_data_header */ + result = rmff_get_next_frame_size(file); + io->seek(fh, old_pos, SEEK_SET); + return result; + } + io->seek(fh, old_pos, SEEK_SET); + if (object_id == rmffFOURCC('I', 'N', 'D', 'X')) + return set_error(RMFF_ERR_EOF, NULL, RMFF_ERR_EOF); + return length - 12; +} + +rmff_frame_t * +rmff_read_next_frame(rmff_file_t *file, + void *buffer) { + rmff_frame_t *frame; + uint16_t object_version, length; + uint32_t object_id; + mb_file_io_t *io; + void *fh; + + if ((file == NULL) || (!file->headers_read) || (file->io == NULL) || + (file->handle == NULL)) + return (rmff_frame_t *)set_error(RMFF_ERR_PARAMETERS, NULL, 0); + io = file->io; + fh = file->handle; + if ((file->size - io->tell(fh)) < 12) + return (rmff_frame_t *)set_error(RMFF_ERR_EOF, NULL, 0); + + object_version = read_uint16_be(); + length = read_uint16_be(); + object_id = ((uint32_t)object_version) << 16 | length; + if (object_id == rmffFOURCC('D', 'A', 'T', 'A')) { + file->num_packets_in_chunk = read_uint32_be(); + file->next_data_header_offset = read_uint32_be(); + file->num_packets_read = 0; + return rmff_read_next_frame(file, buffer); + } + if ((file->num_packets_read >= file->num_packets_in_chunk) || + (object_id == rmffFOURCC('I', 'N', 'D', 'X'))) + return (rmff_frame_t *)set_error(RMFF_ERR_EOF, NULL, 0); + + frame = (rmff_frame_t *)safecalloc(sizeof(rmff_frame_t)); + if (buffer == NULL) { + buffer = safemalloc(length); + frame->allocated_by_rmff = 1; + } + frame->data = buffer; + frame->size = length - 12; + frame->id = read_uint16_be(); + frame->timecode = read_uint32_be(); + frame->reserved = read_uint8(); + frame->flags = read_uint8(); + if (io->read(fh, frame->data, frame->size) != frame->size) { + rmff_release_frame(frame); + return (rmff_frame_t *)set_error(RMFF_ERR_EOF, NULL, 0); + } + file->num_packets_read++; + + return frame; +} + +void +rmff_release_frame(rmff_frame_t *frame) { + if (frame == NULL) + return; + if (frame->allocated_by_rmff) + safefree(frame->data); + safefree(frame); +} diff --git a/librmff/testrmff/Makefile b/librmff/testrmff/Makefile new file mode 100644 index 000000000..4d69d5245 --- /dev/null +++ b/librmff/testrmff/Makefile @@ -0,0 +1,32 @@ +# User settings +CC = gcc +AR = ar +RANLIB = ranlib +INSTALL = install +CFLAGS = -Wall -Wshadow -g +INCLUDES = -I.. +LDFLAGS = -L.. + +# Used for 'make install'. Change/overwrite as needed. +prefix = /usr/local +libdir = $(prefix)/lib +includedir = $(prefix)/include + +# Don't change these settings +SOURCES = testrmff.c +OBJECTS := $(patsubst %.c,%.o,$(SOURCES)) + +CFLAGS += -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 + +all: + make -C .. all + make testrmff + +clean: + rm -f $(OBJECTS) testrmff + +%.o: %.c ../librmff.h + $(CC) -c -o $@ $(CFLAGS) $(INCLUDES) $< + +testrmff: $(OBJECTS) ../librmff.a + $(CC) -o $@ $(LDFLAGS) $(OBJECTS) -lrmff diff --git a/librmff/testrmff/testrmff.c b/librmff/testrmff/testrmff.c new file mode 100644 index 000000000..834777681 --- /dev/null +++ b/librmff/testrmff/testrmff.c @@ -0,0 +1,53 @@ +#include +#include + +#include "librmff.h" + +char buffer[128000]; + +void +test_reading(const char *file_name) { + rmff_file_t *file; + rmff_frame_t *frame; + int frame_no; + + file = rmff_open_file(file_name, MB_OPEN_MODE_READING); + if (file == NULL) { + printf("Could not open %s\n", file_name); + return; + } + printf("Opened %s, reading headers... ", file_name); + if (rmff_read_headers(file) != RMFF_ERR_OK) { + printf("failed. Error code: %d, error message: %s\n", + rmff_last_error, rmff_last_error_msg); + return; + } + printf("done.\nNumber of tracks: %u, number of packets: %u\nNow reading " + "all frames.\n", file->num_tracks, file->num_packets_in_chunk); + frame_no = 0; + do { + printf("frame %d expected size: %d", frame_no, + rmff_get_next_frame_size(file)); + if ((frame = rmff_read_next_frame(file, buffer)) != NULL) { + printf(", read ok with size %d", frame->size); + rmff_release_frame(frame); + } + printf("\n"); + frame_no++; + } while (frame != NULL); + rmff_close_file(file); +} + +int +main(int argc, + char *argv[]) { + int i; + + if (argc < 2) + test_reading("readtestvideo.rm"); + else + for (i = 1; i < argc; i++) + test_reading(argv[i]); + + return 0; +}