Merge pull request vgmstream#1495 from bnnm/mpc

- Add EA SCHl .mpc videos [SSX Tricky (PS2)]
- Add HCA key

doc/USAGE.md

@@ -416,6 +416,12 @@ a companion file:
 The key file can be `.(ext)key` (for the whole folder), or `(name).(ext)key"
 (for a single file). The format is made up to suit vgmstream.
 
+For example, if you have an encrypted HCA and its key string is *"123456789"*, make
+a text file named `.hcakey` (notice it starts with a dot), open it with a text editor
+and copy that key without quotes nor line endings: `123456789`. Save it, then play the
+HCA normally. vgmstream will see this key and use it automatically.
+
+
 ### Artificial files
 In some cases a file only has raw data, while important header info (codec type,
 sample rate, channels, etc) is stored in the .exe or other hard to locate places.

src/meta/ea_schl.c

@@ -201,26 +201,31 @@ VGMSTREAM* init_vgmstream_ea_schl_video(STREAMFILE* sf) {
     int32_t(*read_32bit)(off_t, STREAMFILE*);
 
 
-    /* check extension */
+    /* checks */
     /* .uv: early */
     /* .dct: early-mid [ex. Need for Speed II SE (PC), FIFA 98 (PC)] */
     /* .wve: early-mid [Madden NFL 99 (PC)] */
     /* .mad: mid */
     /* .vp6: late */
-    if (check_extensions(sf, "uv,dct")) {
-        /* starts with audio header block */
-        if (read_32bitBE(0x00, sf) != EA_BLOCKID_HEADER) /* "SCHl" */
-            goto fail;
-    } else if (check_extensions(sf, "mad,wve")) {
-        /* check initial movie block id */
-        if (read_32bitBE(0x00, sf) != 0x4D41446B) /* "MADk" */
-            goto fail;
-    } else if (check_extensions(sf, "vp6")) {
-        /* check initial movie block id */
-        if (read_32bitBE(0x00, sf) != 0x4D566864) /* "MVhd" */
-            goto fail;
-    } else {
-        goto fail;
+    /* .mpc: SSX Tricky (PS2) */
+    if (is_id32be(0x00, sf, "SCHl")) {
+        if (!check_extensions(sf, "uv,dct"))
+            return NULL;
+    }
+    else if (is_id32be(0x00, sf, "MADk")) {
+        if (!check_extensions(sf, "mad,wve"))
+            return NULL;
+    }
+    else if (is_id32be(0x00, sf, "MVhd")) {
+        if (!check_extensions(sf, "vp6"))
+            return NULL;
+    }
+    else if (is_id32be(0x00, sf, "MPCh")) {
+        if (!check_extensions(sf, "mpc,lmpc"))
+            return NULL;
+    }
+    else {
+        return NULL;
     }
 
     /* use block size to check endianness */

src/meta/hca_bf.h

@@ -5,6 +5,7 @@
 #include "../coding/coding.h"
 
 #ifdef HCA_BRUTEFORCE
+#define HCA_BF_CHUNK 0x48000008 //~1GB (int), extra size for keys in between chunks
 
 static void bruteforce_process_result(hca_keytest_t* hk, unsigned long long* p_keycode) {
     *p_keycode = hk->best_key;
@@ -34,7 +35,8 @@ typedef enum {
 static void bruteforce_hca_key_bin_type(STREAMFILE* sf, hca_codec_data* hca_data, unsigned long long* p_keycode, uint16_t subkey, HBF_type_t type) {
     STREAMFILE* sf_keys = NULL;
     uint8_t* buf = NULL;
-    uint32_t keys_size, bytes;
+    uint64_t keys_offset;
+    uint32_t keys_limit;
     int pos, step;
     uint64_t key = 0, old_key = 0;
     hca_keytest_t hk = {0};
@@ -48,16 +50,12 @@ static void bruteforce_hca_key_bin_type(STREAMFILE* sf, hca_codec_data* hca_data
 
     VGM_LOG("HCA BF: test keys.bin (type %i)\n", type);
 
-    keys_size = get_streamfile_size(sf_keys);
-
-    buf = malloc(keys_size);
+    buf = malloc(HCA_BF_CHUNK);
     if (!buf) {
         VGM_LOG("HCA BF: key file too big!\n");
         goto done;
     }
 
-    bytes = read_streamfile(buf, 0, keys_size, sf_keys);
-    if (bytes != keys_size) goto done;
 
     VGM_LOG("HCA BF: start .bin\n");
 
@@ -73,9 +71,36 @@ static void bruteforce_hca_key_bin_type(STREAMFILE* sf, hca_codec_data* hca_data
         default: goto done;
     }
 
+    /* main read */
+    keys_offset = 0;
+    keys_limit = 0;
     pos = 0;
-    while (pos < keys_size - 8) {
-        VGM_ASSERT(pos % 0x1000000 == 0, "HCA: pos %x...\n", pos);
+    while (true) {
+        /* read new chunk */
+        if (pos >= keys_limit) {
+            if (keys_offset + keys_limit == get_streamfile_size(sf_keys))
+                break;
+            if (keys_limit >= 8)
+                keys_offset += keys_limit - 8;
+
+            VGM_LOG("HCA: reading %llx + ...\n", (long long)keys_offset);
+            keys_limit = read_streamfile(buf, keys_offset, HCA_BF_CHUNK, sf_keys);
+            if (keys_limit == 0)
+                return;
+            pos = 0;
+        }
+
+        if (pos % 0x1000000 == 0) {
+            uint64_t pos_out = keys_offset + pos;
+            VGM_LOG("HCA: pos %llx...\n", (long long)pos_out);
+        }
+
+#ifdef HCA_BF_IGNORE_BAD_KEYS
+        if (!is_good_key(buf + pos, int_size)) {
+            pos += step;
+            continue;
+        }
+#endif
 
         /* keys are usually u64le but other orders may exist */
         switch(type) {

src/meta/hca_keys.h

@@ -1299,6 +1299,8 @@ static const hcakey_info hcakey_list[] = {
         // YuYuYui (Switch)
         {3733383634313939},     // 000D437E1D5562D3
 
+        // Pachislot Valvrave (iOS)
+        {2753732797542815},      // 009C8816134319F
 };
 
 #endif/*_HCA_KEYS_H_*/