return 1;
}
-static int32_t parse_metadata(struct mp4 *f, int32_t size)
+static int32_t read_ilst(struct mp4 *f, int32_t size)
{
uint64_t sumsize = 0;
subsize = atom_read_header(f, &atom_type, &header_size);
if (subsize <= header_size + 4)
return 1;
- if (atom_type == ATOM_ILST) {
- parse_metadata(f, (uint32_t) (subsize - (header_size + 4)));
- } else {
+ if (atom_type == ATOM_ILST)
+ read_ilst(f, subsize - (header_size + 4));
+ else
set_position(f, get_position(f) + subsize - header_size);
- }
sumsize += subsize;
}
return f;
}
-static int32_t tag_delete(struct mp4_metadata *meta)
-{
- uint32_t i;
-
- for (i = 0; i < meta->count; i++) {
- free(meta->tags[i].item);
- free(meta->tags[i].value);
- }
- free(meta->tags);
- meta->tags = NULL;
- meta->count = 0;
-
- return 0;
-}
-
void mp4_close(struct mp4 *f)
{
int32_t i;
free(f->track[i]);
}
}
-
- tag_delete(&(f->meta));
+ for (i = 0; i < f->meta.count; i++) {
+ free(f->meta.tags[i].item);
+ free(f->meta.tags[i].value);
+ }
+ free(f->meta.tags);
free(f);
}
return membuffer_write(buf, temp, 4);
}
-struct stdmeta_entry {
- const char *atom;
- const char *name;
-};
-
-struct stdmeta_entry stdmetas[] = {
- {"\xA9" "nam", "title"},
- {"\xA9" "ART", "artist"},
- {"\xA9" "alb", "album"},
- {"\xA9" "day", "date"},
- {"\xA9" "cmt", "comment"},
-};
-
-static const char *find_standard_meta(const char *name) //returns atom name if found, 0 if not
-{
- unsigned n;
- for (n = 0; n < sizeof (stdmetas) / sizeof (stdmetas[0]); n++) {
- if (!strcasecmp(name, stdmetas[n].name))
- return stdmetas[n].atom;
- }
- return 0;
-}
-
static void membuffer_write_std_tag(struct membuffer *buf, const char *name,
const char *value)
{
- uint32_t flags = 1;
-
- /* special check for compilation flag */
- if (strcmp(name, "cpil") == 0) {
- flags = 21;
- }
-
- membuffer_write_int32(buf,
- 8 /*atom header */ + 8 /*data atom header */ +
- 8 /*flags + reserved */ + strlen(value));
+ uint32_t len = strlen(value);
+ membuffer_write_int32(buf, 8 /* atom header */
+ + 8 /* data atom header */
+ + 8 /* flags + reserved */
+ + len);
membuffer_write_atom_name(buf, name);
- membuffer_write_int32(buf,
- 8 /*data atom header */ +
- 8 /*flags + reserved */ + strlen(value));
+ membuffer_write_int32(buf, 8 /* data atom header */
+ + 8 /* flags + reserved */
+ + len);
membuffer_write_atom_name(buf, "data");
- membuffer_write_int32(buf, flags); //flags
- membuffer_write_int32(buf, 0); //reserved
- membuffer_write(buf, value, strlen(value));
+ membuffer_write_int32(buf, 1); /* flags */
+ membuffer_write_int32(buf, 0); /* reserved */
+ membuffer_write(buf, value, len);
}
static unsigned membuffer_error(const struct membuffer *buf)
return ret;
}
+struct stdmeta_entry {
+ const char *atom;
+ const char *name;
+};
+
+static const char *find_standard_meta(const char *name)
+{
+ const struct stdmeta_entry stdmetas[] = {
+ {"\xA9" "nam", "title"},
+ {"\xA9" "ART", "artist"},
+ {"\xA9" "alb", "album"},
+ {"\xA9" "day", "date"},
+ {"\xA9" "cmt", "comment"},
+ };
+
+ for (unsigned n = 0; n < ARRAY_SIZE(stdmetas); n++)
+ if (!strcasecmp(name, stdmetas[n].name))
+ return stdmetas[n].atom;
+ return NULL;
+}
+
static uint32_t create_ilst(const struct mp4_metadata *meta, void **out_buffer,
uint32_t * out_size)
{
return read_u32_be(&src);
}
-static uint32_t modify_moov(struct mp4 *f, void **out_buffer,
- uint32_t *out_size)
+static void *modify_moov(struct mp4 *f, uint32_t *out_size)
{
uint64_t total_base = f->moov_offset + 8;
uint32_t total_size = (uint32_t) (f->moov_size - 8);
uint32_t udta_size, meta_size, ilst_size;
uint32_t new_ilst_size;
- void *new_ilst_buffer;
+ void *new_ilst_buffer, *out_buffer;
uint8_t *p_out;
int32_t size_delta;
void *new_udta_buffer;
uint32_t new_udta_size;
if (!create_udta(&f->meta, &new_udta_buffer, &new_udta_size))
- return 0;
+ return NULL;
buf = membuffer_create();
set_position(f, total_base);
free(new_udta_buffer);
*out_size = membuffer_get_size(buf);
- *out_buffer = membuffer_detach(buf);
+ out_buffer = membuffer_detach(buf);
membuffer_free(buf);
- return 1;
- } else {
- udta_offset = get_position(f);
- udta_size = read_int32(f);
- if (!find_atom_v2 (f, udta_offset + 8, udta_size - 8, "meta", 4, "ilst")) {
- struct membuffer *buf;
- void *new_meta_buffer;
- uint32_t new_meta_size;
-
- if (!create_meta(&f->meta, &new_meta_buffer, &new_meta_size))
- return 0;
-
- buf = membuffer_create();
- set_position(f, total_base);
- membuffer_transfer_from_file(buf, f,
- (uint32_t)(udta_offset - total_base));
-
- membuffer_write_int32(buf, udta_size + 8 + new_meta_size);
- membuffer_write_atom_name(buf, "udta");
- membuffer_transfer_from_file(buf, f, udta_size);
-
- membuffer_write_atom(buf, "meta", new_meta_size,
- new_meta_buffer);
- free(new_meta_buffer);
-
- *out_size = membuffer_get_size(buf);
- *out_buffer = membuffer_detach(buf);
- membuffer_free(buf);
- return 1;
- }
- meta_offset = get_position(f);
- meta_size = read_int32(f);
- if (!find_atom(f, meta_offset + 12, meta_size - 12, "ilst"))
- return 0; //shouldn't happen, find_atom_v2 above takes care of it
- ilst_offset = get_position(f);
- ilst_size = read_int32(f);
+ return out_buffer;
+ }
+ udta_offset = get_position(f);
+ udta_size = read_int32(f);
+ if (!find_atom_v2 (f, udta_offset + 8, udta_size - 8, "meta", 4, "ilst")) {
+ struct membuffer *buf;
+ void *new_meta_buffer;
+ uint32_t new_meta_size;
- if (!create_ilst(&f->meta, &new_ilst_buffer, &new_ilst_size))
- return 0;
+ if (!create_meta(&f->meta, &new_meta_buffer, &new_meta_size))
+ return NULL;
- size_delta = new_ilst_size - (ilst_size - 8);
+ buf = membuffer_create();
+ set_position(f, total_base);
+ membuffer_transfer_from_file(buf, f,
+ (uint32_t)(udta_offset - total_base));
- *out_size = total_size + size_delta;
- *out_buffer = para_malloc(*out_size);
- p_out = (uint8_t *) * out_buffer;
+ membuffer_write_int32(buf, udta_size + 8 + new_meta_size);
+ membuffer_write_atom_name(buf, "udta");
+ membuffer_transfer_from_file(buf, f, udta_size);
- set_position(f, total_base);
- read_data(f, p_out,
- (uint32_t) (udta_offset - total_base));
- p_out += (uint32_t) (udta_offset - total_base);
- *(uint32_t *) p_out = fix_byte_order_32(read_int32(f) + size_delta);
- p_out += 4;
- read_data(f, p_out, 4);
- p_out += 4;
- read_data(f, p_out,
- (uint32_t) (meta_offset - udta_offset - 8));
- p_out += (uint32_t) (meta_offset - udta_offset - 8);
- *(uint32_t *) p_out = fix_byte_order_32(read_int32(f) + size_delta);
- p_out += 4;
- read_data(f, p_out, 4);
- p_out += 4;
- read_data(f, p_out,
- (uint32_t) (ilst_offset - meta_offset - 8));
- p_out += (uint32_t) (ilst_offset - meta_offset - 8);
- *(uint32_t *) p_out = fix_byte_order_32(read_int32(f) + size_delta);
- p_out += 4;
- read_data(f, p_out, 4);
- p_out += 4;
-
- memcpy(p_out, new_ilst_buffer, new_ilst_size);
- p_out += new_ilst_size;
-
- set_position(f, ilst_offset + ilst_size);
- read_data(f, p_out, (uint32_t) (total_size
- - (ilst_offset - total_base) - ilst_size));
-
- free(new_ilst_buffer);
+ membuffer_write_atom(buf, "meta", new_meta_size,
+ new_meta_buffer);
+ free(new_meta_buffer);
+
+ *out_size = membuffer_get_size(buf);
+ out_buffer = membuffer_detach(buf);
+ membuffer_free(buf);
+ return out_buffer;
}
- return 1;
+ meta_offset = get_position(f);
+ meta_size = read_int32(f);
+ /* shouldn't happen, find_atom_v2 above takes care of it */
+ if (!find_atom(f, meta_offset + 12, meta_size - 12, "ilst"))
+ return NULL;
+ ilst_offset = get_position(f);
+ ilst_size = read_int32(f);
+ if (!create_ilst(&f->meta, &new_ilst_buffer, &new_ilst_size))
+ return NULL;
+ size_delta = new_ilst_size - (ilst_size - 8);
+ *out_size = total_size + size_delta;
+ out_buffer = para_malloc(*out_size);
+ p_out = out_buffer;
+ set_position(f, total_base);
+ read_data(f, p_out, (uint32_t) (udta_offset - total_base));
+ p_out += (uint32_t) (udta_offset - total_base);
+ *(uint32_t *)p_out = fix_byte_order_32(read_int32(f) + size_delta);
+ p_out += 4;
+ read_data(f, p_out, 4);
+ p_out += 4;
+ read_data(f, p_out, (uint32_t) (meta_offset - udta_offset - 8));
+ p_out += (uint32_t) (meta_offset - udta_offset - 8);
+ *(uint32_t *)p_out = fix_byte_order_32(read_int32(f) + size_delta);
+ p_out += 4;
+ read_data(f, p_out, 4);
+ p_out += 4;
+ read_data(f, p_out, (uint32_t) (ilst_offset - meta_offset - 8));
+ p_out += (uint32_t) (ilst_offset - meta_offset - 8);
+ *(uint32_t *)p_out = fix_byte_order_32(read_int32(f) + size_delta);
+ p_out += 4;
+ read_data(f, p_out, 4);
+ p_out += 4;
+ memcpy(p_out, new_ilst_buffer, new_ilst_size);
+ p_out += new_ilst_size;
+ set_position(f, ilst_offset + ilst_size);
+ read_data(f, p_out, (uint32_t) (total_size
+ - (ilst_offset - total_base) - ilst_size));
+ free(new_ilst_buffer);
+ return out_buffer;
}
static int32_t write_data(struct mp4 *f, void *data, uint32_t size)
uint32_t new_moov_size;
set_position(f, 0);
- if (!modify_moov(f, &new_moov_data, &new_moov_size)) {
+ new_moov_data = modify_moov(f, &new_moov_size);
+ if (!new_moov_data ) {
mp4_close(f);
return 0;
}
projects / paraslash.git / blobdiff