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Modified the new ZMV format to have variable sized Author as per Bisqwit's request.

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This commit is contained in:
n-a-c-h
2005-03-21 22:56:42 +00:00
parent 0eddcacd15
commit f760ab8495
1 changed files with 35 additions and 11 deletions
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46
zsnes/src/zmovie.c
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@@ -74,7 +74,7 @@ Header
4 bytes - Number of frames with slow down
4 bytes - Number of key combos
2 bytes - Number of internal chapters
20 bytes - Author name
2 bytes - Length of author name
3 bytes - ZST size
1 byte - Flag Byte
2 bits - Start from ZST/Power On/Reset
@@ -155,6 +155,11 @@ enum zmv_video_modes { zmv_vm_ntsc, zmv_vm_pal };
#define INT_CHAP_INDEX_SIZE (zmv_vars.header.internal_chapters*4)
#define EXT_CHAP_BLOCK_SIZE (zmv_open_vars.external_chapter_count*EXT_CHAP_SIZE + 2)
#define EXT_CHAP_END_DIST (EXT_CHAP_BLOCK_SIZE + (size_t)zmv_vars.header.author_len)
#define INT_CHAP_END_DIST (INT_CHAP_INDEX_SIZE + EXT_CHAP_END_DIST)
#define EXT_CHAP_COUNT_END_DIST ((size_t)zmv_vars.header.author_len + 2)
struct zmv_header
{
char magic[3];
@@ -166,7 +171,7 @@ struct zmv_header
unsigned int slow_frames;
unsigned int key_combos;
unsigned short internal_chapters;
char author[20];
unsigned short author_len;
unsigned int zst_size; //We only read/write 3 bytes for this
struct
{
@@ -188,7 +193,7 @@ static void zmv_header_write(struct zmv_header *zmv_head, FILE *fp)
fwrite4(zmv_head->slow_frames, fp);
fwrite4(zmv_head->key_combos, fp);
fwrite2(zmv_head->internal_chapters, fp);
fwrite(zmv_head->author, 20, 1, fp);
fwrite2(zmv_head->author_len, fp);
fwrite3(zmv_head->zst_size, fp);
switch (zmv_head->zmv_flag.start_method)
@@ -244,10 +249,10 @@ static bool zmv_header_read(struct zmv_header *zmv_head, FILE *fp)
zmv_head->slow_frames = fread4(fp);
zmv_head->key_combos = fread4(fp);
zmv_head->internal_chapters = fread2(fp);
fread(zmv_head->author, 20, 1, fp);
zmv_head->author_len = fread2(fp);
zmv_head->zst_size = fread3(fp);
fread(&flag, 1, 1, fp);
if (feof(fp))
{
return(false);
@@ -514,6 +519,7 @@ static void flush_input_buffer()
fwrite(zmv_vars.write_buffer, zmv_vars.write_buffer_loc, 1, zmv_vars.fp);
zmv_vars.write_buffer_loc = 0;
}
zmv_vars.header.author_len = 0; //If we're writing, then author is erased if there
}
/*
@@ -619,7 +625,7 @@ static bool zmv_insert_chapter()
zst_save(zmv_vars.fp, false);
fwrite4(zmv_vars.header.frames, zmv_vars.fp);
write_last_joy_state(zmv_vars.fp);
return(true);
}
return(false);
@@ -689,10 +695,10 @@ static bool zmv_open(char *filename)
zst_load(zmv_vars.fp);
zmv_open_vars.input_start_pos = ftell(zmv_vars.fp);
fseek(zmv_vars.fp, -2, SEEK_END);
fseek(zmv_vars.fp, -(EXT_CHAP_COUNT_END_DIST), SEEK_END);
zmv_open_vars.external_chapter_count = fread2(zmv_vars.fp);
fseek(zmv_vars.fp, -(INT_CHAP_INDEX_SIZE + EXT_CHAP_BLOCK_SIZE), SEEK_END);
fseek(zmv_vars.fp, -(INT_CHAP_END_DIST), SEEK_END);
internal_chapter_read(&zmv_vars.internal_chapters, zmv_vars.fp, zmv_vars.header.internal_chapters);
@@ -796,7 +802,7 @@ static bool zmv_next_chapter()
}
else
{
size_t ext_chapter_loc = EXT_CHAP_BLOCK_SIZE - internal_chapter_pos(&zmv_open_vars.external_chapters, next)*EXT_CHAP_SIZE;
size_t ext_chapter_loc = EXT_CHAP_END_DIST - internal_chapter_pos(&zmv_open_vars.external_chapters, next)*EXT_CHAP_SIZE;
fseek(zmv_vars.fp, -(ext_chapter_loc), SEEK_END);
zst_load(zmv_vars.fp);
zmv_open_vars.frames_replayed = fread4(zmv_vars.fp);
@@ -881,7 +887,7 @@ static void zmv_prev_chapter()
}
else
{
size_t ext_chapter_loc = EXT_CHAP_BLOCK_SIZE - internal_chapter_pos(&zmv_open_vars.external_chapters, prev)*EXT_CHAP_SIZE;
size_t ext_chapter_loc = EXT_CHAP_END_DIST - internal_chapter_pos(&zmv_open_vars.external_chapters, prev)*EXT_CHAP_SIZE;
fseek(zmv_vars.fp, -(ext_chapter_loc), SEEK_END);
zst_load(zmv_vars.fp);
zmv_open_vars.frames_replayed = fread4(zmv_vars.fp);
@@ -908,10 +914,21 @@ static void zmv_add_chapter()
if (!(flag & BIT(2)))
{
char *author = 0;
internal_chapter_add_offset(&zmv_open_vars.external_chapters, current_loc);
zmv_open_vars.external_chapter_count++;
fseek(zmv_vars.fp, -2, SEEK_END);
if (zmv_vars.header.author_len)
{
if ((author = (char *)malloc(zmv_vars.header.author_len)))
{
fseek(zmv_vars.fp, -(zmv_vars.header.author_len), SEEK_END);
fread(author, zmv_vars.header.author_len, 1, zmv_vars.fp);
}
}
fseek(zmv_vars.fp, -(EXT_CHAP_COUNT_END_DIST), SEEK_END);
zst_save(zmv_vars.fp, false);
fwrite4(zmv_open_vars.frames_replayed, zmv_vars.fp);
write_last_joy_state(zmv_vars.fp);
@@ -919,6 +936,12 @@ static void zmv_add_chapter()
fwrite2(zmv_open_vars.external_chapter_count, zmv_vars.fp);
if (author)
{
fwrite(author, zmv_vars.header.author_len, 1, zmv_vars.fp);
free(author);
}
fseek(zmv_vars.fp, current_loc, SEEK_SET);
}
else //Just skip the internal
@@ -970,6 +993,7 @@ void mzt_chdir()
chdir(zmv_vars.filename);
}
//Currently this doesn't work right in playback
bool mzt_save(char *statename, bool thumb, bool playback)
{
size_t filename_len = strlen(zmv_vars.filename);