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This commit is contained in:
John Alanbrook 2022-06-23 18:16:39 +00:00
parent bcecb67685
commit 3842a1a9ff
2 changed files with 78 additions and 74 deletions
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30
Makefile
View file

@ -1,5 +1,5 @@
#procs != nproc procs != nproc
#MAKEFLAGS = --jobs=$(procs) MAKEFLAGS = --jobs=$(procs)
UNAME != uname UNAME != uname
@ -75,10 +75,14 @@ edirs += ./source/engine/thirdparty/Chipmunk2D/include ./source/engine/thirdpart
includeflag != $(call prefix,$(edirs) $(eddirs) $(pindirs) $(bsdirs),-I) includeflag != $(call prefix,$(edirs) $(eddirs) $(pindirs) $(bsdirs),-I)
COMPINCLUDE = $(edirs) $(eddirs) $(pindirs) $(bsdirs) COMPINCLUDE = $(edirs) $(eddirs) $(pindirs) $(bsdirs)
#COMPILER_FLAGS specifies the additional compilation options we're using
WARNING_FLAGS = -Wno-everything#-Wall -Wextra -Wwrite-strings -Wno-unused-parameter -Wno-unused-function -Wno-missing-braces -Wno-incompatible-function-pointer-types -Wno-gnu-statement-expression -Wno-complex-component-init -pedantic WARNING_FLAGS = -Wno-everything#-Wall -Wextra -Wwrite-strings -Wno-unused-parameter -Wno-unused-function -Wno-missing-braces -Wno-incompatible-function-pointer-types -Wno-gnu-statement-expression -Wno-complex-component-init -pedantic
#COMPILER_FLAGS = $(includeflag) -g -O0 $(WARNING_FLAGS) -DGLEW_STATIC -D_GLFW_X11 -D_POSIX_C_SOURCE=1993809L -c -MMD -MP $< -o $@
COMPILER_FLAGS = $(includeflag) -I/usr/local/include -g -O0 $(WARNING_FLAGS) -DGLEW_STATIC -D_GLFW_X11 -D_POSIX_C_SOURCE=1993809L -c $< -o $@
COMPILER_FLAGS = $(includeflag) -I/usr/local/include -g -O0 $(WARNING_FLAGS) -MD -c $< -o $@
#-D_POSIX_C_SOURCE=1993809L
LIBPATH = -L./bin -L/usr/local/lib -L/usr/local/lib/tcc LIBPATH = -L./bin -L/usr/local/lib -L/usr/local/lib/tcc
@ -89,8 +93,8 @@ ifeq ($(UNAME), Windows_NT)
CLIBS = glew32 CLIBS = glew32
EXT = .exe EXT = .exe
else else
LINKER_FLAGS = -fPIC -rdynamic LINKER_FLAGS = -fuse-ld=lld #/usr/local/lib/tcc/bcheck.o /usr/local/lib/tcc/bt-exe.o /usr/local/lib/tcc/bt-log.o
ELIBS = m c engine editor glfw3 ELIBS = m c engine editor glfw3 tcc1
CLIBS = CLIBS =
EXT = EXT =
endif endif
@ -117,22 +121,22 @@ LINK = $(LIBPATH) $(LINKER_FLAGS) $(LELIBS) -o $@
engine: $(yuginec:.%.c=$(objprefix)%.o) $(ENGINE) engine: $(yuginec:.%.c=$(objprefix)%.o) $(ENGINE)
@echo Linking engine @echo Linking engine
@$(CC) $^ $(LINK) @$(CC) $@ $(LINK)
@echo Finished build @echo Finished build
editor: $(yuginec:.%.c=$(objprefix)%.o) $(EDITOR) $(ENGINE) editor: $(yuginec:.%.c=$(objprefix)%.o) $(EDITOR) $(ENGINE)
@echo Linking editor @echo Linking editor
$(CC) $^ $(LINK) @$(CC) $^ $(LINK)
@echo Finished build @echo Finished build
$(ENGINE): $(eobjects) bin/libglfw3.a $(ENGINE): $(eobjects) bin/libglfw3.a
@echo Making library engine.a @echo Making library engine.a
@ar -r $(ENGINE) $^ @ar r $(ENGINE) $(eobjects)
@cp -u -r $(ehead) $(INCLUDE) @cp -u -r $(ehead) $(INCLUDE)
$(EDITOR): $(edobjects) $(EDITOR): $(edobjects)
@echo Making editor library @echo Making editor library
@ar -r $(EDITOR) $^ @ar r $(EDITOR) $^
@cp -u -r $(edhead) $(INCLUDE) @cp -u -r $(edhead) $(INCLUDE)
xbrainstorm: $(bsobjects) $(ENGINE) $(EDITOR) xbrainstorm: $(bsobjects) $(ENGINE) $(EDITOR)
@ -147,8 +151,8 @@ pinball: $(ENGINE) $(pinobjects)
bin/libglfw3.a: bin/libglfw3.a:
@echo Making GLFW @echo Making GLFW
make glfw/build @make glfw/build
cp glfw/build/src/libglfw3.a bin/libglfw3.a @cp glfw/build/src/libglfw3.a bin/libglfw3.a
$(objprefix)/%.o:%.c $(objprefix)/%.o:%.c
@mkdir -p $(@D) @mkdir -p $(@D)

122
source/engine/thirdparty/pl_mpeg/pl_mpeg.c vendored
View file

@ -139,7 +139,7 @@ int plm_has_headers(plm_t *self) {
if (!plm_demux_has_headers(self->demux)) { if (!plm_demux_has_headers(self->demux)) {
return FALSE; return FALSE;
} }
if (!plm_init_decoders(self)) { if (!plm_init_decoders(self)) {
return FALSE; return FALSE;
} }
@ -299,7 +299,7 @@ void plm_decode(plm_t *self, double tick) {
do { do {
did_decode = FALSE; did_decode = FALSE;
if (decode_video && plm_video_get_time(self->video_decoder) < video_target_time) { if (decode_video && plm_video_get_time(self->video_decoder) < video_target_time) {
plm_frame_t *frame = plm_video_decode(self->video_decoder); plm_frame_t *frame = plm_video_decode(self->video_decoder);
if (frame) { if (frame) {
@ -322,10 +322,10 @@ void plm_decode(plm_t *self, double tick) {
} }
} }
} while (did_decode); } while (did_decode);
// Did all sources we wanted to decode fail and the demuxer is at the end? // Did all sources we wanted to decode fail and the demuxer is at the end?
if ( if (
(!decode_video || decode_video_failed) && (!decode_video || decode_video_failed) &&
(!decode_audio || decode_audio_failed) && (!decode_audio || decode_audio_failed) &&
plm_demux_has_ended(self->demux) plm_demux_has_ended(self->demux)
) { ) {
@ -440,7 +440,7 @@ plm_frame_t *plm_seek_frame(plm_t *self, double time, int seek_exact) {
else if (time > duration) { else if (time > duration) {
time = duration; time = duration;
} }
plm_packet_t *packet = plm_demux_seek(self->demux, time, type, TRUE); plm_packet_t *packet = plm_demux_seek(self->demux, time, type, TRUE);
if (!packet) { if (!packet) {
return NULL; return NULL;
@ -454,7 +454,7 @@ plm_frame_t *plm_seek_frame(plm_t *self, double time, int seek_exact) {
plm_video_rewind(self->video_decoder); plm_video_rewind(self->video_decoder);
plm_video_set_time(self->video_decoder, packet->pts - start_time); plm_video_set_time(self->video_decoder, packet->pts - start_time);
plm_buffer_write(self->video_buffer, packet->data, packet->length); plm_buffer_write(self->video_buffer, packet->data, packet->length);
plm_frame_t *frame = plm_video_decode(self->video_decoder); plm_frame_t *frame = plm_video_decode(self->video_decoder);
// If we want to seek to an exact frame, we have to decode all frames // If we want to seek to an exact frame, we have to decode all frames
// on top of the intra frame we just jumped to. // on top of the intra frame we just jumped to.
@ -477,13 +477,13 @@ plm_frame_t *plm_seek_frame(plm_t *self, double time, int seek_exact) {
int plm_seek(plm_t *self, double time, int seek_exact) { int plm_seek(plm_t *self, double time, int seek_exact) {
plm_frame_t *frame = plm_seek_frame(self, time, seek_exact); plm_frame_t *frame = plm_seek_frame(self, time, seek_exact);
if (!frame) { if (!frame) {
return FALSE; return FALSE;
} }
if (self->video_decode_callback) { if (self->video_decode_callback) {
self->video_decode_callback(self, frame, self->video_decode_callback_user_data); self->video_decode_callback(self, frame, self->video_decode_callback_user_data);
} }
// If audio is not enabled we are done here. // If audio is not enabled we are done here.
@ -512,8 +512,8 @@ int plm_seek(plm_t *self, double time, int seek_exact) {
plm_decode(self, 0); plm_decode(self, 0);
break; break;
} }
} }
return TRUE; return TRUE;
} }
@ -586,7 +586,7 @@ plm_buffer_t *plm_buffer_create_with_file(FILE *fh, int close_when_done) {
self->close_when_done = close_when_done; self->close_when_done = close_when_done;
self->mode = PLM_BUFFER_MODE_FILE; self->mode = PLM_BUFFER_MODE_FILE;
self->discard_read_bytes = TRUE; self->discard_read_bytes = TRUE;
fseek(self->fh, 0, SEEK_END); fseek(self->fh, 0, SEEK_END);
self->total_size = ftell(self->fh); self->total_size = ftell(self->fh);
fseek(self->fh, 0, SEEK_SET); fseek(self->fh, 0, SEEK_SET);
@ -652,8 +652,8 @@ size_t plm_buffer_write(plm_buffer_t *self, uint8_t *bytes, size_t length) {
} }
if (self->discard_read_bytes) { if (self->discard_read_bytes) {
// This should be a ring buffer, but instead it just shifts all unread // This should be a ring buffer, but instead it just shifts all unread
// data to the beginning of the buffer and appends new data at the end. // data to the beginning of the buffer and appends new data at the end.
// Seems to be good enough. // Seems to be good enough.
plm_buffer_discard_read_bytes(self); plm_buffer_discard_read_bytes(self);
@ -703,7 +703,7 @@ void plm_buffer_seek(plm_buffer_t *self, size_t pos) {
else if (self->mode == PLM_BUFFER_MODE_RING) { else if (self->mode == PLM_BUFFER_MODE_RING) {
if (pos != 0) { if (pos != 0) {
// Seeking to non-0 is forbidden for dynamic-mem buffers // Seeking to non-0 is forbidden for dynamic-mem buffers
return; return;
} }
self->bit_index = 0; self->bit_index = 0;
self->length = 0; self->length = 0;
@ -735,7 +735,7 @@ void plm_buffer_discard_read_bytes(plm_buffer_t *self) {
void plm_buffer_load_file_callback(plm_buffer_t *self, void *user) { void plm_buffer_load_file_callback(plm_buffer_t *self, void *user) {
PLM_UNUSED(user); PLM_UNUSED(user);
if (self->discard_read_bytes) { if (self->discard_read_bytes) {
plm_buffer_discard_read_bytes(self); plm_buffer_discard_read_bytes(self);
} }
@ -760,12 +760,12 @@ int plm_buffer_has(plm_buffer_t *self, size_t count) {
if (self->load_callback) { if (self->load_callback) {
self->load_callback(self, self->load_callback_user_data); self->load_callback(self, self->load_callback_user_data);
if (((self->length << 3) - self->bit_index) >= count) { if (((self->length << 3) - self->bit_index) >= count) {
return TRUE; return TRUE;
} }
} }
if (self->total_size != 0 && self->length == self->total_size) { if (self->total_size != 0 && self->length == self->total_size) {
self->has_ended = TRUE; self->has_ended = TRUE;
} }
@ -847,7 +847,7 @@ int plm_buffer_find_start_code(plm_buffer_t *self, int code) {
int plm_buffer_has_start_code(plm_buffer_t *self, int code) { int plm_buffer_has_start_code(plm_buffer_t *self, int code) {
size_t previous_bit_index = self->bit_index; size_t previous_bit_index = self->bit_index;
int previous_discard_read_bytes = self->discard_read_bytes; int previous_discard_read_bytes = self->discard_read_bytes;
self->discard_read_bytes = FALSE; self->discard_read_bytes = FALSE;
int current = plm_buffer_find_start_code(self, code); int current = plm_buffer_find_start_code(self, code);
@ -1033,7 +1033,7 @@ double plm_demux_get_start_time(plm_demux_t *self, int type) {
int previous_pos = plm_buffer_tell(self->buffer); int previous_pos = plm_buffer_tell(self->buffer);
int previous_start_code = self->start_code; int previous_start_code = self->start_code;
// Find first video PTS // Find first video PTS
plm_demux_rewind(self); plm_demux_rewind(self);
do { do {
@ -1063,8 +1063,8 @@ double plm_demux_get_duration(plm_demux_t *self, int type) {
size_t previous_pos = plm_buffer_tell(self->buffer); size_t previous_pos = plm_buffer_tell(self->buffer);
int previous_start_code = self->start_code; int previous_start_code = self->start_code;
// Find last video PTS. Start searching 64kb from the end and go further // Find last video PTS. Start searching 64kb from the end and go further
// back if needed. // back if needed.
long start_range = 64 * 1024; long start_range = 64 * 1024;
long max_range = 4096 * 1024; long max_range = 4096 * 1024;
@ -1103,7 +1103,7 @@ plm_packet_t *plm_demux_seek(plm_demux_t *self, double seek_time, int type, int
// Using the current time, current byte position and the average bytes per // Using the current time, current byte position and the average bytes per
// second for this file, try to jump to a byte position that hopefully has // second for this file, try to jump to a byte position that hopefully has
// packets containing timestamps within one second before to the desired // packets containing timestamps within one second before to the desired
// seek_time. // seek_time.
// If we hit close to the seek_time scan through all packets to find the // If we hit close to the seek_time scan through all packets to find the
@ -1112,7 +1112,7 @@ plm_packet_t *plm_demux_seek(plm_demux_t *self, double seek_time, int type, int
// per second for the jumped range and jump again. // per second for the jumped range and jump again.
// The number of retries here is hard-limited to a generous amount. Usually // The number of retries here is hard-limited to a generous amount. Usually
// the correct range is found after 1--5 jumps, even for files with very // the correct range is found after 1--5 jumps, even for files with very
// variable bitrates. If significantly more jumps are needed, there's // variable bitrates. If significantly more jumps are needed, there's
// probably something wrong with the file and we just avoid getting into an // probably something wrong with the file and we just avoid getting into an
// infinite loop. 32 retries should be enough for anybody. // infinite loop. 32 retries should be enough for anybody.
@ -1165,7 +1165,7 @@ plm_packet_t *plm_demux_seek(plm_demux_t *self, double seek_time, int type, int
// Bail scanning through packets if we hit one that is outside // Bail scanning through packets if we hit one that is outside
// seek_time - scan_span. // seek_time - scan_span.
// We also adjust the cur_time and byterate values here so the next // We also adjust the cur_time and byterate values here so the next
// iteration can be a bit more precise. // iteration can be a bit more precise.
if (packet->pts > seek_time || packet->pts < seek_time - scan_span) { if (packet->pts > seek_time || packet->pts < seek_time - scan_span) {
found_packet_with_pts = TRUE; found_packet_with_pts = TRUE;
@ -1185,7 +1185,7 @@ plm_packet_t *plm_demux_seek(plm_demux_t *self, double seek_time, int type, int
} }
// Check if this is an intra frame packet. If so, record the buffer // Check if this is an intra frame packet. If so, record the buffer
// position of the start of this packet. We want to jump back to it // position of the start of this packet. We want to jump back to it
// later, when we know it's the last intra frame before desired // later, when we know it's the last intra frame before desired
// seek time. // seek time.
if (force_intra) { if (force_intra) {
@ -1197,7 +1197,7 @@ plm_packet_t *plm_demux_seek(plm_demux_t *self, double seek_time, int type, int
packet->data[i + 2] == 0x01 && packet->data[i + 2] == 0x01 &&
packet->data[i + 3] == 0x00 packet->data[i + 3] == 0x00
) { ) {
// Bits 11--13 in the picture header contain the frame // Bits 11--13 in the picture header contain the frame
// type, where 1=Intra // type, where 1=Intra
if ((packet->data[i + 5] & 0x38) == 8) { if ((packet->data[i + 5] & 0x38) == 8) {
last_valid_packet_start = packet_start; last_valid_packet_start = packet_start;
@ -1266,9 +1266,9 @@ plm_packet_t *plm_demux_decode(plm_demux_t *self) {
do { do {
self->start_code = plm_buffer_next_start_code(self->buffer); self->start_code = plm_buffer_next_start_code(self->buffer);
if ( if (
self->start_code == PLM_DEMUX_PACKET_VIDEO_1 || self->start_code == PLM_DEMUX_PACKET_VIDEO_1 ||
self->start_code == PLM_DEMUX_PACKET_PRIVATE || ( self->start_code == PLM_DEMUX_PACKET_PRIVATE || (
self->start_code >= PLM_DEMUX_PACKET_AUDIO_1 && self->start_code >= PLM_DEMUX_PACKET_AUDIO_1 &&
self->start_code <= PLM_DEMUX_PACKET_AUDIO_4 self->start_code <= PLM_DEMUX_PACKET_AUDIO_4
) )
) { ) {
@ -1326,7 +1326,7 @@ plm_packet_t *plm_demux_decode_packet(plm_demux_t *self, int type) {
else { else {
return NULL; // invalid return NULL; // invalid
} }
return plm_demux_get_packet(self); return plm_demux_get_packet(self);
} }
@ -1349,7 +1349,7 @@ plm_packet_t *plm_demux_get_packet(plm_demux_t *self) {
// ----------------------------------------------------------------------------- // -----------------------------------------------------------------------------
// plm_video implementation // plm_video implementation
// Inspired by Java MPEG-1 Video Decoder and Player by Zoltan Korandi // Inspired by Java MPEG-1 Video Decoder and Player by Zoltan Korandi
// https://sourceforge.net/projects/javampeg1video/ // https://sourceforge.net/projects/javampeg1video/
static const int PLM_VIDEO_PICTURE_TYPE_INTRA = 1; static const int PLM_VIDEO_PICTURE_TYPE_INTRA = 1;
@ -1837,7 +1837,7 @@ void plm_video_idct(int *block);
plm_video_t * plm_video_create_with_buffer(plm_buffer_t *buffer, int destroy_when_done) { plm_video_t * plm_video_create_with_buffer(plm_buffer_t *buffer, int destroy_when_done) {
plm_video_t *self = (plm_video_t *)malloc(sizeof(plm_video_t)); plm_video_t *self = (plm_video_t *)malloc(sizeof(plm_video_t));
memset(self, 0, sizeof(plm_video_t)); memset(self, 0, sizeof(plm_video_t));
self->buffer = buffer; self->buffer = buffer;
self->destroy_buffer_when_done = destroy_when_done; self->destroy_buffer_when_done = destroy_when_done;
@ -1908,12 +1908,12 @@ plm_frame_t *plm_video_decode(plm_video_t *self) {
if (!plm_video_has_header(self)) { if (!plm_video_has_header(self)) {
return NULL; return NULL;
} }
plm_frame_t *frame = NULL; plm_frame_t *frame = NULL;
do { do {
if (self->start_code != PLM_START_PICTURE) { if (self->start_code != PLM_START_PICTURE) {
self->start_code = plm_buffer_find_start_code(self->buffer, PLM_START_PICTURE); self->start_code = plm_buffer_find_start_code(self->buffer, PLM_START_PICTURE);
if (self->start_code == -1) { if (self->start_code == -1) {
// If we reached the end of the file and the previously decoded // If we reached the end of the file and the previously decoded
// frame was a reference frame, we still have to return it. // frame was a reference frame, we still have to return it.
@ -1946,7 +1946,7 @@ plm_frame_t *plm_video_decode(plm_video_t *self) {
return NULL; return NULL;
} }
plm_buffer_discard_read_bytes(self->buffer); plm_buffer_discard_read_bytes(self->buffer);
plm_video_decode_picture(self); plm_video_decode_picture(self);
if (self->assume_no_b_frames) { if (self->assume_no_b_frames) {
@ -1962,11 +1962,11 @@ plm_frame_t *plm_video_decode(plm_video_t *self) {
self->has_reference_frame = TRUE; self->has_reference_frame = TRUE;
} }
} while (!frame); } while (!frame);
frame->time = self->time; frame->time = self->time;
self->frames_decoded++; self->frames_decoded++;
self->time = (double)self->frames_decoded / self->framerate; self->time = (double)self->frames_decoded / self->framerate;
return frame; return frame;
} }
@ -1981,7 +1981,7 @@ int plm_video_has_header(plm_video_t *self) {
if (self->start_code == -1) { if (self->start_code == -1) {
return FALSE; return FALSE;
} }
if (!plm_video_decode_sequence_header(self)) { if (!plm_video_decode_sequence_header(self)) {
return FALSE; return FALSE;
} }
@ -2011,7 +2011,7 @@ int plm_video_decode_sequence_header(plm_video_t *self) {
plm_buffer_skip(self->buffer, 18 + 1 + 10 + 1); plm_buffer_skip(self->buffer, 18 + 1 + 10 + 1);
// Load custom intra quant matrix? // Load custom intra quant matrix?
if (plm_buffer_read(self->buffer, 1)) { if (plm_buffer_read(self->buffer, 1)) {
for (int i = 0; i < 64; i++) { for (int i = 0; i < 64; i++) {
int idx = PLM_VIDEO_ZIG_ZAG[i]; int idx = PLM_VIDEO_ZIG_ZAG[i];
self->intra_quant_matrix[idx] = plm_buffer_read(self->buffer, 8); self->intra_quant_matrix[idx] = plm_buffer_read(self->buffer, 8);
@ -2022,7 +2022,7 @@ int plm_video_decode_sequence_header(plm_video_t *self) {
} }
// Load custom non intra quant matrix? // Load custom non intra quant matrix?
if (plm_buffer_read(self->buffer, 1)) { if (plm_buffer_read(self->buffer, 1)) {
for (int i = 0; i < 64; i++) { for (int i = 0; i < 64; i++) {
int idx = PLM_VIDEO_ZIG_ZAG[i]; int idx = PLM_VIDEO_ZIG_ZAG[i];
self->non_intra_quant_matrix[idx] = plm_buffer_read(self->buffer, 8); self->non_intra_quant_matrix[idx] = plm_buffer_read(self->buffer, 8);
@ -2124,7 +2124,7 @@ void plm_video_decode_picture(plm_video_t *self) {
do { do {
self->start_code = plm_buffer_next_start_code(self->buffer); self->start_code = plm_buffer_next_start_code(self->buffer);
} while ( } while (
self->start_code == PLM_START_EXTENSION || self->start_code == PLM_START_EXTENSION ||
self->start_code == PLM_START_USER_DATA self->start_code == PLM_START_USER_DATA
); );
@ -2394,7 +2394,7 @@ void plm_video_process_macroblock(
unsigned int si = ((self->mb_row * block_size) + vp) * dw + (self->mb_col * block_size) + hp; unsigned int si = ((self->mb_row * block_size) + vp) * dw + (self->mb_col * block_size) + hp;
unsigned int di = (self->mb_row * dw + self->mb_col) * block_size; unsigned int di = (self->mb_row * dw + self->mb_col) * block_size;
unsigned int max_address = (dw * (self->mb_height * block_size - block_size + 1) - block_size); unsigned int max_address = (dw * (self->mb_height * block_size - block_size + 1) - block_size);
if (si > max_address || di > max_address) { if (si > max_address || di > max_address) {
return; // corrupt video return; // corrupt video
@ -2823,10 +2823,10 @@ static const uint8_t PLM_AUDIO_QUANT_LUT_STEP_1[2][16] = {
}; };
// Quantizer lookup, step 2: bitrate class, sample rate -> B2 table idx, sblimit // Quantizer lookup, step 2: bitrate class, sample rate -> B2 table idx, sblimit
static const uint8_t PLM_AUDIO_QUANT_TAB_A = (27 | 64); // Table 3-B.2a: high-rate, sblimit = 27 #define PLM_AUDIO_QUANT_TAB_A (27 | 64) // Table 3-B.2a: high-rate, sblimit = 27
static const uint8_t PLM_AUDIO_QUANT_TAB_B = (30 | 64); // Table 3-B.2b: high-rate, sblimit = 30 #define PLM_AUDIO_QUANT_TAB_B (30 | 64) // Table 3-B.2b: high-rate, sblimit = 30
static const uint8_t PLM_AUDIO_QUANT_TAB_C = 8; // Table 3-B.2c: low-rate, sblimit = 8 #define PLM_AUDIO_QUANT_TAB_C 8 // Table 3-B.2c: low-rate, sblimit = 8
static const uint8_t PLM_AUDIO_QUANT_TAB_D = 12; // Table 3-B.2d: low-rate, sblimit = 12 #define PLM_AUDIO_QUANT_TAB_D 12 // Table 3-B.2d: low-rate, sblimit = 12
static const uint8_t QUANT_LUT_STEP_2[3][3] = { static const uint8_t QUANT_LUT_STEP_2[3][3] = {
//44.1 kHz, 48 kHz, 32 kHz //44.1 kHz, 48 kHz, 32 kHz
@ -2907,7 +2907,7 @@ typedef struct plm_audio_t {
int v_pos; int v_pos;
int next_frame_data_size; int next_frame_data_size;
int has_header; int has_header;
plm_buffer_t *buffer; plm_buffer_t *buffer;
int destroy_buffer_when_done; int destroy_buffer_when_done;
@ -2926,7 +2926,7 @@ int plm_audio_find_frame_sync(plm_audio_t *self);
int plm_audio_decode_header(plm_audio_t *self); int plm_audio_decode_header(plm_audio_t *self);
void plm_audio_decode_frame(plm_audio_t *self); void plm_audio_decode_frame(plm_audio_t *self);
const plm_quantizer_spec_t *plm_audio_read_allocation(plm_audio_t *self, int sb, int tab3); const plm_quantizer_spec_t *plm_audio_read_allocation(plm_audio_t *self, int sb, int tab3);
void plm_audio_read_samples(plm_audio_t *self, int ch, int sb, int part); void plm_audio_read_samples(plm_audio_t *self, int ch, int sb, int part);
void plm_audio_idct36(int s[32][3], int ss, float *d, int dp); void plm_audio_idct36(int s[32][3], int ss, float *d, int dp);
plm_audio_t *plm_audio_create_with_buffer(plm_buffer_t *buffer, int destroy_when_done) { plm_audio_t *plm_audio_create_with_buffer(plm_buffer_t *buffer, int destroy_when_done) {
@ -2958,7 +2958,7 @@ int plm_audio_has_header(plm_audio_t *self) {
if (self->has_header) { if (self->has_header) {
return TRUE; return TRUE;
} }
self->next_frame_data_size = plm_audio_decode_header(self); self->next_frame_data_size = plm_audio_decode_header(self);
return self->has_header; return self->has_header;
} }
@ -2974,7 +2974,7 @@ double plm_audio_get_time(plm_audio_t *self) {
} }
void plm_audio_set_time(plm_audio_t *self, double time) { void plm_audio_set_time(plm_audio_t *self, double time) {
self->samples_decoded = time * self->samples_decoded = time *
(double)PLM_AUDIO_SAMPLE_RATE[self->samplerate_index]; (double)PLM_AUDIO_SAMPLE_RATE[self->samplerate_index];
self->time = time; self->time = time;
} }
@ -3008,13 +3008,13 @@ plm_samples_t *plm_audio_decode(plm_audio_t *self) {
plm_audio_decode_frame(self); plm_audio_decode_frame(self);
self->next_frame_data_size = 0; self->next_frame_data_size = 0;
self->samples.time = self->time; self->samples.time = self->time;
self->samples_decoded += PLM_AUDIO_SAMPLES_PER_FRAME; self->samples_decoded += PLM_AUDIO_SAMPLES_PER_FRAME;
self->time = (double)self->samples_decoded / self->time = (double)self->samples_decoded /
(double)PLM_AUDIO_SAMPLE_RATE[self->samplerate_index]; (double)PLM_AUDIO_SAMPLE_RATE[self->samplerate_index];
return &self->samples; return &self->samples;
} }
@ -3042,10 +3042,10 @@ int plm_audio_decode_header(plm_audio_t *self) {
int sync = plm_buffer_read(self->buffer, 11); int sync = plm_buffer_read(self->buffer, 11);
// Attempt to resync if no syncword was found. This sucks balls. The MP2 // Attempt to resync if no syncword was found. This sucks balls. The MP2
// stream contains a syncword just before every frame (11 bits set to 1). // stream contains a syncword just before every frame (11 bits set to 1).
// However, this syncword is not guaranteed to not occur elsewhere in the // However, this syncword is not guaranteed to not occur elsewhere in the
// stream. So, if we have to resync, we also have to check if the header // stream. So, if we have to resync, we also have to check if the header
// (samplerate, bitrate) differs from the one we had before. This all // (samplerate, bitrate) differs from the one we had before. This all
// may still lead to garbage data being decoded :/ // may still lead to garbage data being decoded :/
@ -3122,7 +3122,7 @@ void plm_audio_decode_frame(plm_audio_t *self) {
// Prepare the quantizer table lookups // Prepare the quantizer table lookups
int tab3 = 0; int tab3 = 0;
int sblimit = 0; int sblimit = 0;
int tab1 = (self->mode == PLM_AUDIO_MODE_MONO) ? 0 : 1; int tab1 = (self->mode == PLM_AUDIO_MODE_MONO) ? 0 : 1;
int tab2 = PLM_AUDIO_QUANT_LUT_STEP_1[tab1][self->bitrate_index]; int tab2 = PLM_AUDIO_QUANT_LUT_STEP_1[tab1][self->bitrate_index];
tab3 = QUANT_LUT_STEP_2[tab2][self->samplerate_index]; tab3 = QUANT_LUT_STEP_2[tab2][self->samplerate_index];
@ -3170,18 +3170,18 @@ void plm_audio_decode_frame(plm_audio_t *self) {
sf[2] = plm_buffer_read(self->buffer, 6); sf[2] = plm_buffer_read(self->buffer, 6);
break; break;
case 1: case 1:
sf[0] = sf[0] =
sf[1] = plm_buffer_read(self->buffer, 6); sf[1] = plm_buffer_read(self->buffer, 6);
sf[2] = plm_buffer_read(self->buffer, 6); sf[2] = plm_buffer_read(self->buffer, 6);
break; break;
case 2: case 2:
sf[0] = sf[0] =
sf[1] = sf[1] =
sf[2] = plm_buffer_read(self->buffer, 6); sf[2] = plm_buffer_read(self->buffer, 6);
break; break;
case 3: case 3:
sf[0] = plm_buffer_read(self->buffer, 6); sf[0] = plm_buffer_read(self->buffer, 6);
sf[1] = sf[1] =
sf[2] = plm_buffer_read(self->buffer, 6); sf[2] = plm_buffer_read(self->buffer, 6);
break; break;
} }
@ -3262,7 +3262,7 @@ void plm_audio_decode_frame(plm_audio_t *self) {
} }
#else #else
for (int j = 0; j < 32; j++) { for (int j = 0; j < 32; j++) {
self->samples.interleaved[((out_pos + j) << 1) + ch] = self->samples.interleaved[((out_pos + j) << 1) + ch] =
self->U[j] / 2147418112.0f; self->U[j] / 2147418112.0f;
} }
#endif #endif