svn wont allow commit of file. renaming to _ to avoid svn.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@21212 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 326 insertions, 0 deletions

diff --git a/media/tools/qt_faststart.c b/media/tools/qt_faststart.c
new file mode 100644
index 0000000..2197c48
--- /dev/null
+++ b/media/tools/qt_faststart.c
@@ -0,0 +1,326 @@
+/*
+ * qt-faststart.c, v0.2
+ * by Mike Melanson (melanson@pcisys.net)
+ * patch by Frank Barchard, to remove last FREE atom.
+ * 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 <infile.mov> <outfile.mov>
+ *
+ * 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 <stdio.h>
+#include <stdlib.h>
+#ifndef _MSC_VER
+#include <inttypes.h>
+#else
+#pragma warning(push,1)
+#define PRIu64 "I64u"
+#define uint64_t unsigned __int64
+#define uint32_t unsigned int
+#define uint8_t unsigned char
+#define ftello _ftelli64
+#define fseeko _fseeki64
+#endif
+
+#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 UUID_ATOM QT_ATOM('u', 'u', 'i', 'd')
+
+#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 = 0;
+    FILE *outfile = 0;
+    unsigned char atom_bytes[ATOM_PREAMBLE_SIZE];
+    uint32_t atom_type = 0;
+    uint64_t atom_size = 0;
+    uint64_t last_offset = 0;  // warning: 'last_offset' may be used uninitialized in this function
+    unsigned char *moov_atom = 0;
+    unsigned char *ftyp_atom = 0;
+    uint64_t moov_atom_size = 0;  // warning: 'moov_atom_size' may be used uninitialized in this function
+    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;
+    uint32_t last_atom_type = 0;
+    uint64_t last_atom_size = 0;
+    uint64_t last_atom_offset = 0;
+    uint64_t atom_offset;
+    int just_remove_free = 0;
+    int return_code = 1;
+
+    if (argc != 3) {
+        printf ("Usage: qt_faststart <infile.mov> <outfile.mov>\n");
+        goto exit_cleanup;
+    }
+
+    infile = fopen(argv[1], "rb");
+    if (!infile) {
+        perror(argv[1]);
+        goto exit_cleanup;
+    }
+
+    /* 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]);
+        atom_offset = ftello(infile) - ATOM_PREAMBLE_SIZE;
+
+        /* 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);
+                goto exit_cleanup;
+            }
+            fseeko(infile, -ATOM_PREAMBLE_SIZE, SEEK_CUR);
+            if (fread(ftyp_atom, atom_size, 1, infile) != 1) {
+                perror(argv[1]);
+                goto exit_cleanup;
+            }
+            start_offset = ftello(infile);
+        } else {
+        /* 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);
+        }
+        }
+
+        printf("%c%c%c%c %10"PRIu64" %"PRIu64"\n",
+               (atom_type >> 24) & 255,
+               (atom_type >> 16) & 255,
+               (atom_type >>  8) & 255,
+               (atom_type >>  0) & 255,
+               (unsigned long long ) atom_offset,
+               (unsigned long long ) atom_size);
+
+        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 != UUID_ATOM) &&
+            (atom_type != FTYP_ATOM)) {
+            printf ("encountered non-QT top-level atom (is this a Quicktime file?)\n");
+            break;
+        }
+        if ((atom_type != FREE_ATOM)) {
+            last_atom_size = atom_size;
+            last_atom_type = atom_type;
+            last_atom_offset = ftello(infile) - last_atom_size;
+        }
+        if ((atom_type != FREE_ATOM) && (atom_type != MOOV_ATOM))
+            last_offset = ftello(infile);
+    }
+
+    if (last_atom_type == MOOV_ATOM) {
+
+        /* moov atom was, in fact, the last atom in the chunk; load the whole
+         * moov atom */
+        fseeko(infile, last_atom_offset, SEEK_SET);
+        moov_atom_size = last_atom_size;
+        moov_atom = malloc(moov_atom_size);
+        if (!moov_atom) {
+            printf ("could not allocate 0x%llX byte for moov atom\n",
+                atom_size);
+            goto exit_cleanup;
+        }
+        if (fread(moov_atom, moov_atom_size, 1, infile) != 1) {
+            perror(argv[1]);
+            goto exit_cleanup;
+        }
+
+        /* 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");
+            goto exit_cleanup;
+        }
+
+        /* 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;
+            }
+        }
+    } else {
+        if (atom_type == FREE_ATOM) {
+            printf ("free atom at %"PRIu64" removed.\n", (unsigned long long ) last_offset);
+            just_remove_free = 1;
+        } else {
+            printf ("Last atom in file was not a moov or free atom.  Skipping.\n");
+            goto exit_cleanup;
+        }
+    }
+
+    outfile = fopen(argv[2], "wb");
+    if (!outfile) {
+        perror(argv[2]);
+        goto exit_cleanup;
+    }
+
+    /* 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 exit_cleanup;
+        }
+    }
+
+    if (!just_remove_free) {
+        /* dump the new moov atom */
+        printf (" writing moov atom...\n");
+        if (fwrite(moov_atom, moov_atom_size, 1, outfile) != 1) {
+            perror(argv[2]);
+            goto exit_cleanup;
+        }
+    }
+
+    /* copy the remainder of the infile, from offset 0 -> last_offset - 1 */
+    printf (" copying rest of file: %"PRIu64"..%"PRIu64"\n", start_offset, last_offset);
+    fseeko(infile, start_offset, SEEK_SET);
+    last_offset -= start_offset;  /* Amount to copy */
+    while (last_offset > 0) {
+        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 exit_cleanup;
+        }
+        if (fwrite(copy_buffer, bytes_to_copy, 1, outfile) != 1) {
+            perror(argv[2]);
+            goto exit_cleanup;
+        }
+        last_offset -= bytes_to_copy;
+    }
+    return_code = 0;
+
+exit_cleanup:
+    if (infile)
+        fclose(infile);
+    if (outfile)
+        fclose(outfile);
+    if (moov_atom)
+        free(moov_atom);
+    if (ftyp_atom)
+        free(ftyp_atom);
+    return return_code;
+}