Commit 48a4ffa7 authored by Diego Biurrun's avatar Diego Biurrun

asf: K&R formatting cosmetics

parent 77bcb896
...@@ -20,7 +20,6 @@ ...@@ -20,7 +20,6 @@
#include "asf.h" #include "asf.h"
const ff_asf_guid ff_asf_header = { const ff_asf_guid ff_asf_header = {
0x30, 0x26, 0xB2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C 0x30, 0x26, 0xB2, 0x75, 0x8E, 0x66, 0xCF, 0x11, 0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C
}; };
...@@ -115,7 +114,7 @@ const ff_asf_guid ff_asf_marker_header = { ...@@ -115,7 +114,7 @@ const ff_asf_guid ff_asf_marker_header = {
}; };
/* I am not a number !!! This GUID is the one found on the PC used to /* I am not a number !!! This GUID is the one found on the PC used to
generate the stream */ * generate the stream */
const ff_asf_guid ff_asf_my_guid = { const ff_asf_guid ff_asf_my_guid = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
}; };
...@@ -138,21 +137,21 @@ const ff_asf_guid ff_asf_digital_signature = { ...@@ -138,21 +137,21 @@ const ff_asf_guid ff_asf_digital_signature = {
/* List of official tags at http://msdn.microsoft.com/en-us/library/dd743066(VS.85).aspx */ /* List of official tags at http://msdn.microsoft.com/en-us/library/dd743066(VS.85).aspx */
const AVMetadataConv ff_asf_metadata_conv[] = { const AVMetadataConv ff_asf_metadata_conv[] = {
{ "WM/AlbumArtist" , "album_artist"}, { "WM/AlbumArtist", "album_artist" },
{ "WM/AlbumTitle" , "album" }, { "WM/AlbumTitle", "album" },
{ "Author" , "artist" }, { "Author", "artist" },
{ "Description" , "comment" }, { "Description", "comment" },
{ "WM/Composer" , "composer" }, { "WM/Composer", "composer" },
{ "WM/EncodedBy" , "encoded_by" }, { "WM/EncodedBy", "encoded_by" },
{ "WM/EncodingSettings", "encoder" }, { "WM/EncodingSettings", "encoder" },
{ "WM/Genre" , "genre" }, { "WM/Genre", "genre" },
{ "WM/Language" , "language" }, { "WM/Language", "language" },
{ "WM/OriginalFilename", "filename" }, { "WM/OriginalFilename", "filename" },
{ "WM/PartOfSet" , "disc" }, { "WM/PartOfSet", "disc" },
{ "WM/Publisher" , "publisher" }, { "WM/Publisher", "publisher" },
{ "WM/Tool" , "encoder" }, { "WM/Tool", "encoder" },
{ "WM/TrackNumber" , "track" }, { "WM/TrackNumber", "track" },
{ "WM/Track" , "track" }, { "WM/Track", "track" },
{ "WM/MediaStationCallSign", "service_provider" }, { "WM/MediaStationCallSign", "service_provider" },
{ "WM/MediaStationName", "service_name" }, { "WM/MediaStationName", "service_name" },
// { "Year" , "date" }, TODO: conversion year<->date // { "Year" , "date" }, TODO: conversion year<->date
......
...@@ -20,10 +20,10 @@ ...@@ -20,10 +20,10 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/ */
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/bswap.h" #include "libavutil/bswap.h"
#include "libavutil/common.h"
#include "libavutil/des.h" #include "libavutil/des.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/rc4.h" #include "libavutil/rc4.h"
#include "asfcrypt.h" #include "asfcrypt.h"
...@@ -32,7 +32,8 @@ ...@@ -32,7 +32,8 @@
* @param v number to invert, must be odd! * @param v number to invert, must be odd!
* @return number so that result * v = 1 (mod 2^32) * @return number so that result * v = 1 (mod 2^32)
*/ */
static uint32_t inverse(uint32_t v) { static uint32_t inverse(uint32_t v)
{
// v ^ 3 gives the inverse (mod 16), could also be implemented // v ^ 3 gives the inverse (mod 16), could also be implemented
// as table etc. (only lowest 4 bits matter!) // as table etc. (only lowest 4 bits matter!)
uint32_t inverse = v * v * v; uint32_t inverse = v * v * v;
...@@ -50,7 +51,8 @@ static uint32_t inverse(uint32_t v) { ...@@ -50,7 +51,8 @@ static uint32_t inverse(uint32_t v) {
* @param keys output key array containing the keys for encryption in * @param keys output key array containing the keys for encryption in
* native endianness * native endianness
*/ */
static void multiswap_init(const uint8_t keybuf[48], uint32_t keys[12]) { static void multiswap_init(const uint8_t keybuf[48], uint32_t keys[12])
{
int i; int i;
for (i = 0; i < 12; i++) for (i = 0; i < 12; i++)
keys[i] = AV_RL32(keybuf + (i << 2)) | 1; keys[i] = AV_RL32(keybuf + (i << 2)) | 1;
...@@ -61,7 +63,8 @@ static void multiswap_init(const uint8_t keybuf[48], uint32_t keys[12]) { ...@@ -61,7 +63,8 @@ static void multiswap_init(const uint8_t keybuf[48], uint32_t keys[12]) {
* the other way round. * the other way round.
* @param keys key array of ints to invert * @param keys key array of ints to invert
*/ */
static void multiswap_invert_keys(uint32_t keys[12]) { static void multiswap_invert_keys(uint32_t keys[12])
{
int i; int i;
for (i = 0; i < 5; i++) for (i = 0; i < 5; i++)
keys[i] = inverse(keys[i]); keys[i] = inverse(keys[i]);
...@@ -69,7 +72,8 @@ static void multiswap_invert_keys(uint32_t keys[12]) { ...@@ -69,7 +72,8 @@ static void multiswap_invert_keys(uint32_t keys[12]) {
keys[i] = inverse(keys[i]); keys[i] = inverse(keys[i]);
} }
static uint32_t multiswap_step(const uint32_t keys[12], uint32_t v) { static uint32_t multiswap_step(const uint32_t keys[12], uint32_t v)
{
int i; int i;
v *= keys[0]; v *= keys[0];
for (i = 1; i < 5; i++) { for (i = 1; i < 5; i++) {
...@@ -80,7 +84,8 @@ static uint32_t multiswap_step(const uint32_t keys[12], uint32_t v) { ...@@ -80,7 +84,8 @@ static uint32_t multiswap_step(const uint32_t keys[12], uint32_t v) {
return v; return v;
} }
static uint32_t multiswap_inv_step(const uint32_t keys[12], uint32_t v) { static uint32_t multiswap_inv_step(const uint32_t keys[12], uint32_t v)
{
int i; int i;
v -= keys[5]; v -= keys[5];
for (i = 4; i > 0; i--) { for (i = 4; i > 0; i--) {
...@@ -99,13 +104,15 @@ static uint32_t multiswap_inv_step(const uint32_t keys[12], uint32_t v) { ...@@ -99,13 +104,15 @@ static uint32_t multiswap_inv_step(const uint32_t keys[12], uint32_t v) {
* @param data data to encrypt * @param data data to encrypt
* @return encrypted data * @return encrypted data
*/ */
static uint64_t multiswap_enc(const uint32_t keys[12], uint64_t key, uint64_t data) { static uint64_t multiswap_enc(const uint32_t keys[12],
uint64_t key, uint64_t data)
{
uint32_t a = data; uint32_t a = data;
uint32_t b = data >> 32; uint32_t b = data >> 32;
uint32_t c; uint32_t c;
uint32_t tmp; uint32_t tmp;
a += key; a += key;
tmp = multiswap_step(keys , a); tmp = multiswap_step(keys, a);
b += tmp; b += tmp;
c = (key >> 32) + tmp; c = (key >> 32) + tmp;
tmp = multiswap_step(keys + 6, b); tmp = multiswap_step(keys + 6, b);
...@@ -121,7 +128,9 @@ static uint64_t multiswap_enc(const uint32_t keys[12], uint64_t key, uint64_t da ...@@ -121,7 +128,9 @@ static uint64_t multiswap_enc(const uint32_t keys[12], uint64_t key, uint64_t da
* @param data data to decrypt * @param data data to decrypt
* @return decrypted data * @return decrypted data
*/ */
static uint64_t multiswap_dec(const uint32_t keys[12], uint64_t key, uint64_t data) { static uint64_t multiswap_dec(const uint32_t keys[12],
uint64_t key, uint64_t data)
{
uint32_t a; uint32_t a;
uint32_t b; uint32_t b;
uint32_t c = data >> 32; uint32_t c = data >> 32;
...@@ -130,12 +139,13 @@ static uint64_t multiswap_dec(const uint32_t keys[12], uint64_t key, uint64_t da ...@@ -130,12 +139,13 @@ static uint64_t multiswap_dec(const uint32_t keys[12], uint64_t key, uint64_t da
b = multiswap_inv_step(keys + 6, tmp); b = multiswap_inv_step(keys + 6, tmp);
tmp = c - (key >> 32); tmp = c - (key >> 32);
b -= tmp; b -= tmp;
a = multiswap_inv_step(keys , tmp); a = multiswap_inv_step(keys, tmp);
a -= key; a -= key;
return ((uint64_t)b << 32) | a; return ((uint64_t)b << 32) | a;
} }
void ff_asfcrypt_dec(const uint8_t key[20], uint8_t *data, int len) { void ff_asfcrypt_dec(const uint8_t key[20], uint8_t *data, int len)
{
struct AVDES des; struct AVDES des;
struct AVRC4 rc4; struct AVRC4 rc4;
int num_qwords = len >> 3; int num_qwords = len >> 3;
...@@ -155,7 +165,7 @@ void ff_asfcrypt_dec(const uint8_t key[20], uint8_t *data, int len) { ...@@ -155,7 +165,7 @@ void ff_asfcrypt_dec(const uint8_t key[20], uint8_t *data, int len) {
av_rc4_crypt(&rc4, (uint8_t *)rc4buff, NULL, sizeof(rc4buff), NULL, 1); av_rc4_crypt(&rc4, (uint8_t *)rc4buff, NULL, sizeof(rc4buff), NULL, 1);
multiswap_init((uint8_t *)rc4buff, ms_keys); multiswap_init((uint8_t *)rc4buff, ms_keys);
packetkey = AV_RN64(&qwords[num_qwords*8 - 8]); packetkey = AV_RN64(&qwords[num_qwords * 8 - 8]);
packetkey ^= rc4buff[7]; packetkey ^= rc4buff[7];
av_des_init(&des, key + 12, 64, 1); av_des_init(&des, key + 12, 64, 1);
av_des_crypt(&des, (uint8_t *)&packetkey, (uint8_t *)&packetkey, 1, NULL, 1); av_des_crypt(&des, (uint8_t *)&packetkey, (uint8_t *)&packetkey, 1, NULL, 1);
......
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