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RetroArch/movie.c
twinaphex 69a3bf6a31 Create bsv_movie_is_playback_{on|off}
2017-04-20 10:40:11 +02:00

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/* RetroArch - A frontend for libretro.
* Copyright (C) 2010-2014 - Hans-Kristian Arntzen
* Copyright (C) 2011-2017 - Daniel De Matteis
*
* RetroArch is free software: you can redistribute it and/or modify it under the terms
* of the GNU General Public License as published by the Free Software Found-
* ation, either version 3 of the License, or (at your option) any later version.
*
* RetroArch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with RetroArch.
* If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <string.h>
#include <rhash.h>
#include <compat/strl.h>
#include <retro_endianness.h>
#include <streams/file_stream.h>
#include "configuration.h"
#include "movie.h"
#include "core.h"
#include "content.h"
#include "retroarch.h"
#include "runloop.h"
#include "msg_hash.h"
#include "verbosity.h"
#include "command.h"
#include "file_path_special.h"
struct bsv_movie
{
RFILE *file;
/* A ring buffer keeping track of positions
* in the file for each frame. */
size_t *frame_pos;
size_t frame_mask;
size_t frame_ptr;
size_t min_file_pos;
size_t state_size;
uint8_t *state;
bool playback;
bool first_rewind;
bool did_rewind;
};
struct bsv_state
{
/* Movie playback/recording support. */
char movie_path[PATH_MAX_LENGTH];
bool movie_playback;
bool eof_exit;
/* Immediate playback/recording. */
char movie_start_path[PATH_MAX_LENGTH];
bool movie_start_recording;
bool movie_start_playback;
bool movie_end;
};
static bsv_movie_t *bsv_movie_state_handle = NULL;
static struct bsv_state bsv_movie_state;
static bool bsv_movie_init_playback(bsv_movie_t *handle, const char *path)
{
uint32_t state_size;
uint32_t *content_crc_ptr = NULL;
uint32_t header[4] = {0};
RFILE *file = filestream_open(path, RFILE_MODE_READ, -1);
if (!file)
{
RARCH_ERR("Could not open BSV file for playback, path : \"%s\".\n", path);
return false;
}
handle->file = file;
handle->playback = true;
if (filestream_read(handle->file, header, 4) != 4)
{
RARCH_ERR("%s\n", msg_hash_to_str(MSG_COULD_NOT_READ_MOVIE_HEADER));
return false;
}
/* Compatibility with old implementation that
* used incorrect documentation. */
if (swap_if_little32(header[MAGIC_INDEX]) != BSV_MAGIC
&& swap_if_big32(header[MAGIC_INDEX]) != BSV_MAGIC)
{
RARCH_ERR("%s\n", msg_hash_to_str(MSG_MOVIE_FILE_IS_NOT_A_VALID_BSV1_FILE));
return false;
}
content_get_crc(&content_crc_ptr);
if (swap_if_big32(header[CRC_INDEX]) != *content_crc_ptr)
RARCH_WARN("%s.\n", msg_hash_to_str(MSG_CRC32_CHECKSUM_MISMATCH));
state_size = swap_if_big32(header[STATE_SIZE_INDEX]);
if (state_size)
{
retro_ctx_size_info_t info;
retro_ctx_serialize_info_t serial_info;
uint8_t *buf = (uint8_t*)malloc(state_size);
if (!buf)
return false;
handle->state = buf;
handle->state_size = state_size;
if (filestream_read(handle->file, handle->state, state_size) != state_size)
{
RARCH_ERR("%s\n", msg_hash_to_str(MSG_COULD_NOT_READ_STATE_FROM_MOVIE));
return false;
}
core_serialize_size( &info);
if (info.size == state_size)
{
serial_info.data_const = handle->state;
serial_info.size = state_size;
core_unserialize(&serial_info);
}
else
RARCH_WARN("%s\n",
msg_hash_to_str(MSG_MOVIE_FORMAT_DIFFERENT_SERIALIZER_VERSION));
}
handle->min_file_pos = sizeof(header) + state_size;
return true;
}
static bool bsv_movie_init_record(bsv_movie_t *handle, const char *path)
{
retro_ctx_size_info_t info;
uint32_t state_size;
uint32_t header[4] = {0};
uint32_t *content_crc_ptr = NULL;
RFILE *file = filestream_open(path, RFILE_MODE_WRITE, -1);
if (!file)
{
RARCH_ERR("Could not open BSV file for recording, path : \"%s\".\n", path);
return false;
}
handle->file = file;
content_get_crc(&content_crc_ptr);
/* This value is supposed to show up as
* BSV1 in a HEX editor, big-endian. */
header[MAGIC_INDEX] = swap_if_little32(BSV_MAGIC);
header[CRC_INDEX] = swap_if_big32(*content_crc_ptr);
core_serialize_size(&info);
state_size = (unsigned)info.size;
header[STATE_SIZE_INDEX] = swap_if_big32(state_size);
filestream_write(handle->file, header, sizeof(uint32_t));
handle->min_file_pos = sizeof(header) + state_size;
handle->state_size = state_size;
if (state_size)
{
retro_ctx_serialize_info_t serial_info;
handle->state = (uint8_t*)malloc(state_size);
if (!handle->state)
return false;
serial_info.data = handle->state;
serial_info.size = state_size;
core_serialize(&serial_info);
filestream_write(handle->file, handle->state, state_size);
}
return true;
}
static void bsv_movie_free(bsv_movie_t *handle)
{
if (!handle)
return;
filestream_close(handle->file);
free(handle->state);
free(handle->frame_pos);
free(handle);
}
static bsv_movie_t *bsv_movie_init(const char *path,
enum rarch_movie_type type)
{
size_t *frame_pos = NULL;
bsv_movie_t *handle = (bsv_movie_t*)calloc(1, sizeof(*handle));
if (!handle)
return NULL;
if (type == RARCH_MOVIE_PLAYBACK)
{
if (!bsv_movie_init_playback(handle, path))
goto error;
}
else if (!bsv_movie_init_record(handle, path))
goto error;
/* Just pick something really large
* ~1 million frames rewind should do the trick. */
if (!(frame_pos = (size_t*)calloc((1 << 20), sizeof(size_t))))
goto error;
handle->frame_pos = frame_pos;
handle->frame_pos[0] = handle->min_file_pos;
handle->frame_mask = (1 << 20) - 1;
return handle;
error:
bsv_movie_free(handle);
return NULL;
}
/* Used for rewinding while playback/record. */
void bsv_movie_set_frame_start(void)
{
if (bsv_movie_state_handle)
bsv_movie_state_handle->frame_pos[bsv_movie_state_handle->frame_ptr]
= filestream_tell(bsv_movie_state_handle->file);
}
void bsv_movie_set_frame_end(void)
{
if (!bsv_movie_state_handle)
return;
bsv_movie_state_handle->frame_ptr =
(bsv_movie_state_handle->frame_ptr + 1) & bsv_movie_state_handle->frame_mask;
bsv_movie_state_handle->first_rewind =
!bsv_movie_state_handle->did_rewind;
bsv_movie_state_handle->did_rewind = false;
}
static void bsv_movie_frame_rewind(bsv_movie_t *handle)
{
handle->did_rewind = true;
if ( (handle->frame_ptr <= 1)
&& (handle->frame_pos[0] == handle->min_file_pos))
{
/* If we're at the beginning... */
handle->frame_ptr = 0;
filestream_seek(handle->file, handle->min_file_pos, SEEK_SET);
}
else
{
/* First time rewind is performed, the old frame is simply replayed.
* However, playing back that frame caused us to read data, and push
* data to the ring buffer.
*
* Sucessively rewinding frames, we need to rewind past the read data,
* plus another. */
handle->frame_ptr = (handle->frame_ptr -
(handle->first_rewind ? 1 : 2)) & handle->frame_mask;
filestream_seek(handle->file, handle->frame_pos[handle->frame_ptr], SEEK_SET);
}
if (filestream_tell(handle->file) <= (long)handle->min_file_pos)
{
/* We rewound past the beginning. */
if (!handle->playback)
{
retro_ctx_serialize_info_t serial_info;
/* If recording, we simply reset
* the starting point. Nice and easy. */
filestream_seek(handle->file, 4 * sizeof(uint32_t), SEEK_SET);
serial_info.data = handle->state;
serial_info.size = handle->state_size;
core_serialize(&serial_info);
filestream_write(handle->file, handle->state, handle->state_size);
}
else
filestream_seek(handle->file, handle->min_file_pos, SEEK_SET);
}
}
static void bsv_movie_init_state(void)
{
settings_t *settings = config_get_ptr();
if (bsv_movie_ctl(BSV_MOVIE_CTL_START_PLAYBACK, NULL))
{
if (!(bsv_movie_init_handle(bsv_movie_state.movie_start_path,
RARCH_MOVIE_PLAYBACK)))
{
RARCH_ERR("%s: \"%s\".\n",
msg_hash_to_str(MSG_FAILED_TO_LOAD_MOVIE_FILE),
bsv_movie_state.movie_start_path);
retroarch_fail(1, "event_init_movie()");
}
bsv_movie_state.movie_playback = true;
runloop_msg_queue_push(msg_hash_to_str(MSG_STARTING_MOVIE_PLAYBACK),
2, 180, false);
RARCH_LOG("%s.\n", msg_hash_to_str(MSG_STARTING_MOVIE_PLAYBACK));
settings->rewind_granularity = 1;
}
else if (bsv_movie_state.movie_start_recording)
{
char msg[256];
snprintf(msg, sizeof(msg),
"%s \"%s\".",
msg_hash_to_str(MSG_STARTING_MOVIE_RECORD_TO),
bsv_movie_state.movie_start_path);
if (!(bsv_movie_init_handle(bsv_movie_state.movie_start_path,
RARCH_MOVIE_RECORD)))
{
runloop_msg_queue_push(
msg_hash_to_str(MSG_FAILED_TO_START_MOVIE_RECORD),
1, 180, true);
RARCH_ERR("%s.\n", msg_hash_to_str(MSG_FAILED_TO_START_MOVIE_RECORD));
return;
}
runloop_msg_queue_push(msg, 1, 180, true);
RARCH_LOG("%s \"%s\".\n",
msg_hash_to_str(MSG_STARTING_MOVIE_RECORD_TO),
bsv_movie_state.movie_start_path);
settings->rewind_granularity = 1;
}
}
bool bsv_movie_get_input(int16_t *bsv_data)
{
if (filestream_read(bsv_movie_state_handle->file, bsv_data, 1) != 1)
return false;
*bsv_data = swap_if_big16(*bsv_data);
return true;
}
bool bsv_movie_is_playback_on(void)
{
return bsv_movie_state_handle && bsv_movie_state.movie_playback;
}
bool bsv_movie_is_playback_off(void)
{
return bsv_movie_state_handle && !bsv_movie_state.movie_playback;
}
bool bsv_movie_ctl(enum bsv_ctl_state state, void *data)
{
switch (state)
{
case BSV_MOVIE_CTL_IS_INITED:
return bsv_movie_state_handle;
case BSV_MOVIE_CTL_START_RECORDING:
return bsv_movie_state.movie_start_recording;
case BSV_MOVIE_CTL_SET_START_RECORDING:
bsv_movie_state.movie_start_recording = true;
break;
case BSV_MOVIE_CTL_UNSET_START_RECORDING:
bsv_movie_state.movie_start_recording = false;
break;
case BSV_MOVIE_CTL_START_PLAYBACK:
return bsv_movie_state.movie_start_playback;
case BSV_MOVIE_CTL_SET_START_PLAYBACK:
bsv_movie_state.movie_start_playback = true;
break;
case BSV_MOVIE_CTL_UNSET_START_PLAYBACK:
bsv_movie_state.movie_start_playback = false;
break;
case BSV_MOVIE_CTL_SET_END_EOF:
bsv_movie_state.eof_exit = true;
break;
case BSV_MOVIE_CTL_END_EOF:
return bsv_movie_state.movie_end && bsv_movie_state.eof_exit;
case BSV_MOVIE_CTL_SET_END:
bsv_movie_state.movie_end = true;
break;
case BSV_MOVIE_CTL_UNSET_END:
bsv_movie_state.movie_end = false;
break;
case BSV_MOVIE_CTL_UNSET_PLAYBACK:
bsv_movie_state.movie_playback = false;
break;
case BSV_MOVIE_CTL_DEINIT:
if (bsv_movie_state_handle)
bsv_movie_free(bsv_movie_state_handle);
bsv_movie_state_handle = NULL;
break;
case BSV_MOVIE_CTL_INIT:
bsv_movie_init_state();
break;
case BSV_MOVIE_CTL_FRAME_REWIND:
bsv_movie_frame_rewind(bsv_movie_state_handle);
break;
case BSV_MOVIE_CTL_SET_INPUT:
{
int16_t *bsv_data = (int16_t*)data;
*bsv_data = swap_if_big16(*bsv_data);
filestream_write(bsv_movie_state_handle->file, bsv_data, 1);
}
break;
case BSV_MOVIE_CTL_NONE:
default:
return false;
}
return true;
}
void bsv_movie_set_path(const char *path)
{
strlcpy(bsv_movie_state.movie_path,
path, sizeof(bsv_movie_state.movie_path));
}
void bsv_movie_set_start_path(const char *path)
{
strlcpy(bsv_movie_state.movie_start_path, path,
sizeof(bsv_movie_state.movie_start_path));
}
bool bsv_movie_init_handle(const char *path,
enum rarch_movie_type type)
{
bsv_movie_state_handle = bsv_movie_init(path, type);
if (!bsv_movie_state_handle)
return false;
return true;
}
/* Checks if movie is being played back. */
static bool bsv_movie_check_movie_playback(void)
{
runloop_msg_queue_push(
msg_hash_to_str(MSG_MOVIE_PLAYBACK_ENDED), 2, 180, false);
RARCH_LOG("%s\n", msg_hash_to_str(MSG_MOVIE_PLAYBACK_ENDED));
command_event(CMD_EVENT_BSV_MOVIE_DEINIT, NULL);
bsv_movie_state.movie_end = false;
bsv_movie_state.movie_playback = false;
return true;
}
/* Checks if movie is being recorded. */
static bool runloop_check_movie_record(void)
{
if (!bsv_movie_state_handle)
return false;
runloop_msg_queue_push(
msg_hash_to_str(MSG_MOVIE_RECORD_STOPPED), 2, 180, true);
RARCH_LOG("%s\n", msg_hash_to_str(MSG_MOVIE_RECORD_STOPPED));
command_event(CMD_EVENT_BSV_MOVIE_DEINIT, NULL);
return true;
}
static bool runloop_check_movie_init(void)
{
char msg[128] = {0};
char path[PATH_MAX_LENGTH] = {0};
settings_t *settings = config_get_ptr();
settings->rewind_granularity = 1;
if (settings->state_slot > 0)
snprintf(path, sizeof(path), "%s%d",
bsv_movie_state.movie_path, settings->state_slot);
else
strlcpy(path, bsv_movie_state.movie_path, sizeof(path));
strlcat(path,
file_path_str(FILE_PATH_BSV_EXTENSION),
sizeof(path));
snprintf(msg, sizeof(msg), "%s \"%s\".",
msg_hash_to_str(MSG_STARTING_MOVIE_RECORD_TO),
path);
bsv_movie_init_handle(path, RARCH_MOVIE_RECORD);
if (!bsv_movie_state_handle)
return false;
if (bsv_movie_state_handle)
{
runloop_msg_queue_push(msg, 2, 180, true);
RARCH_LOG("%s \"%s\".\n",
msg_hash_to_str(MSG_STARTING_MOVIE_RECORD_TO),
path);
}
else
{
runloop_msg_queue_push(
msg_hash_to_str(MSG_FAILED_TO_START_MOVIE_RECORD),
2, 180, true);
RARCH_ERR("%s\n",
msg_hash_to_str(MSG_FAILED_TO_START_MOVIE_RECORD));
}
return true;
}
bool bsv_movie_check(void)
{
if (bsv_movie_state_handle && bsv_movie_state.movie_playback)
{
if (!bsv_movie_state.movie_end)
return false;
return bsv_movie_check_movie_playback();
}
if (!bsv_movie_state_handle)
{
if (bsv_movie_state_handle)
return false;
return runloop_check_movie_init();
}
return runloop_check_movie_record();
}
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