From 60cb01f9a81c311f914aed4a23e8e5b35e965918 Mon Sep 17 00:00:00 2001 From: Florian Pritz Date: Sat, 11 May 2013 13:27:07 +0200 Subject: soem more cleanup Signed-off-by: Florian Pritz --- qt-faststart.c | 315 --------------------------------------------------------- 1 file changed, 315 deletions(-) delete mode 100644 qt-faststart.c (limited to 'qt-faststart.c') diff --git a/qt-faststart.c b/qt-faststart.c deleted file mode 100644 index 0ea9660..0000000 --- a/qt-faststart.c +++ /dev/null @@ -1,315 +0,0 @@ -/* - * qt-faststart.c, v0.1 - * by Mike Melanson (melanson@pcisys.net) - * This file is placed in the public domain. Use the program however you - * see fit. - * - * This utility rearranges a Quicktime file such that the moov atom - * is in front of the data, thus facilitating network streaming. - * - * To compile this program, start from the base directory from which you - * are building FFmpeg and type: - * make tools/qt-faststart - * The qt-faststart program will be built in the tools/ directory. If you - * do not build the program in this manner, correct results are not - * guaranteed, particularly on 64-bit platforms. - * Invoke the program with: - * qt-faststart - * - * Notes: Quicktime files can come in many configurations of top-level - * atoms. This utility stipulates that the very last atom in the file needs - * to be a moov atom. When given such a file, this utility will rearrange - * the top-level atoms by shifting the moov atom from the back of the file - * to the front, and patch the chunk offsets along the way. This utility - * presently only operates on uncompressed moov atoms. - */ - -#include -#include -#include - -#ifdef __MINGW32__ -#define fseeko(x,y,z) fseeko64(x,y,z) -#define ftello(x) ftello64(x) -#endif - -#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1]) -#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \ - (((uint8_t*)(x))[1] << 16) | \ - (((uint8_t*)(x))[2] << 8) | \ - ((uint8_t*)(x))[3]) -#define BE_64(x) (((uint64_t)(((uint8_t*)(x))[0]) << 56) | \ - ((uint64_t)(((uint8_t*)(x))[1]) << 48) | \ - ((uint64_t)(((uint8_t*)(x))[2]) << 40) | \ - ((uint64_t)(((uint8_t*)(x))[3]) << 32) | \ - ((uint64_t)(((uint8_t*)(x))[4]) << 24) | \ - ((uint64_t)(((uint8_t*)(x))[5]) << 16) | \ - ((uint64_t)(((uint8_t*)(x))[6]) << 8) | \ - ((uint64_t)((uint8_t*)(x))[7])) - -#define BE_FOURCC( ch0, ch1, ch2, ch3 ) \ - ( (uint32_t)(unsigned char)(ch3) | \ - ( (uint32_t)(unsigned char)(ch2) << 8 ) | \ - ( (uint32_t)(unsigned char)(ch1) << 16 ) | \ - ( (uint32_t)(unsigned char)(ch0) << 24 ) ) - -#define QT_ATOM BE_FOURCC -/* top level atoms */ -#define FREE_ATOM QT_ATOM('f', 'r', 'e', 'e') -#define JUNK_ATOM QT_ATOM('j', 'u', 'n', 'k') -#define MDAT_ATOM QT_ATOM('m', 'd', 'a', 't') -#define MOOV_ATOM QT_ATOM('m', 'o', 'o', 'v') -#define PNOT_ATOM QT_ATOM('p', 'n', 'o', 't') -#define SKIP_ATOM QT_ATOM('s', 'k', 'i', 'p') -#define WIDE_ATOM QT_ATOM('w', 'i', 'd', 'e') -#define PICT_ATOM QT_ATOM('P', 'I', 'C', 'T') -#define FTYP_ATOM QT_ATOM('f', 't', 'y', 'p') - -#define CMOV_ATOM QT_ATOM('c', 'm', 'o', 'v') -#define STCO_ATOM QT_ATOM('s', 't', 'c', 'o') -#define CO64_ATOM QT_ATOM('c', 'o', '6', '4') - -#define ATOM_PREAMBLE_SIZE 8 -#define COPY_BUFFER_SIZE 1024 - -int main(int argc, char *argv[]) -{ - FILE *infile; - FILE *outfile; - unsigned char atom_bytes[ATOM_PREAMBLE_SIZE]; - uint32_t atom_type = 0; - uint64_t atom_size = 0; - uint64_t last_offset; - unsigned char *moov_atom; - unsigned char *ftyp_atom = 0; - uint64_t moov_atom_size; - uint64_t ftyp_atom_size = 0; - uint64_t i, j; - uint32_t offset_count; - uint64_t current_offset; - uint64_t start_offset = 0; - unsigned char copy_buffer[COPY_BUFFER_SIZE]; - int bytes_to_copy; - - if (argc != 3) { - printf ("Usage: qt-faststart \n"); - return 0; - } - - infile = fopen(argv[1], "rb"); - if (!infile) { - perror(argv[1]); - return 1; - } - - /* traverse through the atoms in the file to make sure that 'moov' is - * at the end */ - while (!feof(infile)) { - if (fread(atom_bytes, ATOM_PREAMBLE_SIZE, 1, infile) != 1) { - break; - } - atom_size = (uint32_t)BE_32(&atom_bytes[0]); - atom_type = BE_32(&atom_bytes[4]); - - if ((atom_type != FREE_ATOM) && - (atom_type != JUNK_ATOM) && - (atom_type != MDAT_ATOM) && - (atom_type != MOOV_ATOM) && - (atom_type != PNOT_ATOM) && - (atom_type != SKIP_ATOM) && - (atom_type != WIDE_ATOM) && - (atom_type != PICT_ATOM) && - (atom_type != FTYP_ATOM)) { - printf ("encountered non-QT top-level atom (is this a Quicktime file?)\n"); - break; - } - - /* keep ftyp atom */ - if (atom_type == FTYP_ATOM) { - ftyp_atom_size = atom_size; - ftyp_atom = malloc(ftyp_atom_size); - if (!ftyp_atom) { - printf ("could not allocate 0x%llX byte for ftyp atom\n", - atom_size); - fclose(infile); - return 1; - } - fseeko(infile, -ATOM_PREAMBLE_SIZE, SEEK_CUR); - if (fread(ftyp_atom, atom_size, 1, infile) != 1) { - perror(argv[1]); - free(ftyp_atom); - fclose(infile); - return 1; - } - start_offset = ftello(infile); - continue; - } - - /* 64-bit special case */ - if (atom_size == 1) { - if (fread(atom_bytes, ATOM_PREAMBLE_SIZE, 1, infile) != 1) { - break; - } - atom_size = BE_64(&atom_bytes[0]); - fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE * 2, SEEK_CUR); - } else { - fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE, SEEK_CUR); - } - } - - if (atom_type != MOOV_ATOM) { - printf ("last atom in file was not a moov atom\n"); - fclose(infile); - return 0; - } - - /* moov atom was, in fact, the last atom in the chunk; load the whole - * moov atom */ - fseeko(infile, -atom_size, SEEK_END); - last_offset = ftello(infile); - moov_atom_size = atom_size; - moov_atom = malloc(moov_atom_size); - if (!moov_atom) { - printf ("could not allocate 0x%llX byte for moov atom\n", - atom_size); - fclose(infile); - return 1; - } - if (fread(moov_atom, atom_size, 1, infile) != 1) { - perror(argv[1]); - free(moov_atom); - fclose(infile); - return 1; - } - - /* this utility does not support compressed atoms yet, so disqualify - * files with compressed QT atoms */ - if (BE_32(&moov_atom[12]) == CMOV_ATOM) { - printf ("this utility does not support compressed moov atoms yet\n"); - free(moov_atom); - fclose(infile); - return 1; - } - - /* close; will be re-opened later */ - fclose(infile); - - /* crawl through the moov chunk in search of stco or co64 atoms */ - for (i = 4; i < moov_atom_size - 4; i++) { - atom_type = BE_32(&moov_atom[i]); - if (atom_type == STCO_ATOM) { - printf (" patching stco atom...\n"); - atom_size = BE_32(&moov_atom[i - 4]); - if (i + atom_size - 4 > moov_atom_size) { - printf (" bad atom size\n"); - free(moov_atom); - return 1; - } - offset_count = BE_32(&moov_atom[i + 8]); - for (j = 0; j < offset_count; j++) { - current_offset = BE_32(&moov_atom[i + 12 + j * 4]); - current_offset += moov_atom_size; - moov_atom[i + 12 + j * 4 + 0] = (current_offset >> 24) & 0xFF; - moov_atom[i + 12 + j * 4 + 1] = (current_offset >> 16) & 0xFF; - moov_atom[i + 12 + j * 4 + 2] = (current_offset >> 8) & 0xFF; - moov_atom[i + 12 + j * 4 + 3] = (current_offset >> 0) & 0xFF; - } - i += atom_size - 4; - } else if (atom_type == CO64_ATOM) { - printf (" patching co64 atom...\n"); - atom_size = BE_32(&moov_atom[i - 4]); - if (i + atom_size - 4 > moov_atom_size) { - printf (" bad atom size\n"); - free(moov_atom); - return 1; - } - offset_count = BE_32(&moov_atom[i + 8]); - for (j = 0; j < offset_count; j++) { - current_offset = BE_64(&moov_atom[i + 12 + j * 8]); - current_offset += moov_atom_size; - moov_atom[i + 12 + j * 8 + 0] = (current_offset >> 56) & 0xFF; - moov_atom[i + 12 + j * 8 + 1] = (current_offset >> 48) & 0xFF; - moov_atom[i + 12 + j * 8 + 2] = (current_offset >> 40) & 0xFF; - moov_atom[i + 12 + j * 8 + 3] = (current_offset >> 32) & 0xFF; - moov_atom[i + 12 + j * 8 + 4] = (current_offset >> 24) & 0xFF; - moov_atom[i + 12 + j * 8 + 5] = (current_offset >> 16) & 0xFF; - moov_atom[i + 12 + j * 8 + 6] = (current_offset >> 8) & 0xFF; - moov_atom[i + 12 + j * 8 + 7] = (current_offset >> 0) & 0xFF; - } - i += atom_size - 4; - } - } - - /* re-open the input file and open the output file */ - infile = fopen(argv[1], "rb"); - if (!infile) { - perror(argv[1]); - free(moov_atom); - return 1; - } - - if (start_offset > 0) { /* seek after ftyp atom */ - fseeko(infile, start_offset, SEEK_SET); - last_offset -= start_offset; - } - - outfile = fopen(argv[2], "wb"); - if (!outfile) { - perror(argv[2]); - fclose(outfile); - free(moov_atom); - return 1; - } - - /* dump the same ftyp atom */ - if (ftyp_atom_size > 0) { - printf (" writing ftyp atom...\n"); - if (fwrite(ftyp_atom, ftyp_atom_size, 1, outfile) != 1) { - perror(argv[2]); - goto error_out; - } - } - - /* dump the new moov atom */ - printf (" writing moov atom...\n"); - if (fwrite(moov_atom, moov_atom_size, 1, outfile) != 1) { - perror(argv[2]); - goto error_out; - } - - /* copy the remainder of the infile, from offset 0 -> last_offset - 1 */ - printf (" copying rest of file...\n"); - while (last_offset) { - if (last_offset > COPY_BUFFER_SIZE) - bytes_to_copy = COPY_BUFFER_SIZE; - else - bytes_to_copy = last_offset; - - if (fread(copy_buffer, bytes_to_copy, 1, infile) != 1) { - perror(argv[1]); - goto error_out; - } - if (fwrite(copy_buffer, bytes_to_copy, 1, outfile) != 1) { - perror(argv[2]); - goto error_out; - } - - last_offset -= bytes_to_copy; - } - - fclose(infile); - fclose(outfile); - free(moov_atom); - if (ftyp_atom_size > 0) - free(ftyp_atom); - - return 0; - -error_out: - fclose(infile); - fclose(outfile); - free(moov_atom); - if (ftyp_atom_size > 0) - free(ftyp_atom); - return 1; -} -- cgit v1.2.3-24-g4f1b