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Fix PCM-only EAMP3 [EA Sports FC24 (PC)]

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This commit is contained in:
bnnm 2024-04-13 20:23:24 +02:00
parent 7f1641e820
commit f25eacdb52
1 changed files with 46 additions and 39 deletions
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85
src/coding/mpeg_custom_utils_eamp3.c
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@ -15,42 +15,49 @@ typedef struct {
uint32_t pcm_size; /* size of the PCM block */
} eamp3_frame_info;
static int eamp3_parse_frame(VGMSTREAMCHANNEL *stream, mpeg_codec_data *data, eamp3_frame_info * eaf);
static int eamp3_write_pcm_block(VGMSTREAMCHANNEL *stream, mpeg_codec_data *data, int num_stream, eamp3_frame_info * eaf);
static int eamp3_skip_data(VGMSTREAMCHANNEL *stream, mpeg_codec_data *data, int num_stream, int at_start);
static bool eamp3_parse_frame(STREAMFILE* sf, uint32_t offset, mpeg_codec_data* data, eamp3_frame_info* eaf);
static int eamp3_write_pcm_block(VGMSTREAMCHANNEL* stream, mpeg_codec_data* data, int num_stream, eamp3_frame_info* eaf);
static int eamp3_skip_data(VGMSTREAMCHANNEL* stream, mpeg_codec_data* data, int num_stream, int at_start);
/* init config and validate */
int mpeg_custom_setup_init_eamp3(STREAMFILE *streamFile, off_t start_offset, mpeg_codec_data *data, coding_t *coding_type) {
mpeg_frame_info info;
uint16_t frame_header;
size_t header_size;
int mpeg_custom_setup_init_eamp3(STREAMFILE* sf, off_t start_offset, mpeg_codec_data *data, coding_t *coding_type) {
eamp3_frame_info eaf = {0};
/* test unknown stuff */
frame_header = (uint16_t)read_16bitLE(start_offset+0x00, streamFile);
if (frame_header & 0x2000) {
VGM_LOG("EAMP3: found unknown bit 13\n");
goto fail;
}
if ((frame_header & 0x8000) && (uint32_t)read_32bitLE(start_offset+0x02, streamFile) > 0xFFFF) {
VGM_LOG("EAMP3: found big PCM block\n");
/* needed below for rare PCM-only cases (EAMP3 can use multilayers) */
data->channels_per_frame = data->config.channels >= 2 ? 2 : 1;
bool ok = eamp3_parse_frame(sf, start_offset, data, &eaf);
if (!ok) goto fail;
/* checks */
if (eaf.unknown_flag || (eaf.extended_flag && eaf.pcm_number > 0xFFFF) || (!eaf.pcm_number && !eaf.mpeg_size)) {
VGM_LOG("EAMP3: found data found\n");
goto fail;
}
/* get frame info at offset */
header_size = (frame_header & 0x8000) ? 0x06 : 0x02;
if (!mpeg_get_frame_info(streamFile, start_offset+header_size, &info))
goto fail;
switch(info.layer) {
case 1: *coding_type = coding_MPEG_layer1; break;
case 2: *coding_type = coding_MPEG_layer2; break;
case 3: *coding_type = coding_MPEG_layer3; break;
default: goto fail;
if (!eaf.mpeg_size) {
/* rare small pcm-only files, pretend mp3 max though won't be really needed [FC24 (PC)] */
*coding_type = coding_MPEG_layer3;
data->channels_per_frame = data->config.channels;
data->samples_per_frame = 1152;
data->bitrate_per_frame = 320;
data->sample_rate_per_frame = 48000;
}
else {
mpeg_frame_info info;
if (!mpeg_get_frame_info(sf, start_offset + eaf.pre_size, &info))
goto fail;
switch(info.layer) {
case 1: *coding_type = coding_MPEG_layer1; break;
case 2: *coding_type = coding_MPEG_layer2; break;
case 3: *coding_type = coding_MPEG_layer3; break;
default: goto fail;
}
data->channels_per_frame = info.channels;
data->samples_per_frame = info.frame_samples;
data->bitrate_per_frame = info.bit_rate;
data->sample_rate_per_frame = info.sample_rate;
}
data->channels_per_frame = info.channels;
data->samples_per_frame = info.frame_samples;
data->bitrate_per_frame = info.bit_rate;
data->sample_rate_per_frame = info.sample_rate;
return 1;
@ -61,14 +68,14 @@ fail:
/* reads custom frame header + MPEG data + (optional) PCM block */
int mpeg_custom_parse_frame_eamp3(VGMSTREAMCHANNEL *stream, mpeg_codec_data *data, int num_stream) {
mpeg_custom_stream *ms = data->streams[num_stream];
eamp3_frame_info eaf;
eamp3_frame_info eaf = {0};
int ok;
if (!eamp3_skip_data(stream, data, num_stream, 1))
goto fail;
ok = eamp3_parse_frame(stream, data, &eaf);
ok = eamp3_parse_frame(stream->streamfile, stream->offset, data, &eaf);
if (!ok) goto fail;
ms->bytes_in_buffer = read_streamfile(ms->buffer, stream->offset + eaf.pre_size, eaf.mpeg_size, stream->streamfile);
@ -87,8 +94,8 @@ fail:
}
static int eamp3_parse_frame(VGMSTREAMCHANNEL *stream, mpeg_codec_data *data, eamp3_frame_info * eaf) {
uint16_t current_header = (uint16_t)read_16bitLE(stream->offset+0x00, stream->streamfile);
static bool eamp3_parse_frame(STREAMFILE* sf, uint32_t offset, mpeg_codec_data* data, eamp3_frame_info* eaf) {
uint16_t current_header = read_u16le(offset+0x00, sf);
eaf->extended_flag = (current_header & 0x8000);
eaf->stereo_flag = (current_header & 0x4000);
@ -96,12 +103,12 @@ static int eamp3_parse_frame(VGMSTREAMCHANNEL *stream, mpeg_codec_data *data, ea
eaf->frame_size = (current_header & 0x1FFF); /* full size including PCM block */
eaf->pcm_number = 0;
if (eaf->extended_flag > 0) {
eaf->pcm_number = (uint32_t)read_32bitLE(stream->offset+0x02, stream->streamfile);
eaf->pcm_size = sizeof(sample) * eaf->pcm_number * data->channels_per_frame;
eaf->pcm_number = read_u32le(offset+0x02, sf);
eaf->pcm_size = sizeof(int16_t) * eaf->pcm_number * data->channels_per_frame;
eaf->pre_size = 0x06;
eaf->mpeg_size = eaf->frame_size - eaf->pre_size - eaf->pcm_size;
if (eaf->frame_size < eaf->pre_size + eaf->pcm_size) {
VGM_LOG("EAMP3: bad pcm size at %x\n", (uint32_t)stream->offset);
VGM_LOG("EAMP3: bad pcm size at %x: %x < %x + %x (%x * %x)\n", offset, eaf->frame_size, eaf->pre_size, eaf->pcm_size, eaf->pcm_number, data->channels_per_frame);
goto fail;
}
}
@ -111,9 +118,9 @@ static int eamp3_parse_frame(VGMSTREAMCHANNEL *stream, mpeg_codec_data *data, ea
eaf->mpeg_size = eaf->frame_size - eaf->pre_size;
}
return 1;
return true;
fail:
return 0;
return false;
}
/* write PCM block directly to sample buffer and setup decode discard (see EALayer3). */
@ -155,12 +162,12 @@ fail:
/* Skip EA-frames from other streams for .sns/sps multichannel (see EALayer3). */
static int eamp3_skip_data(VGMSTREAMCHANNEL *stream, mpeg_codec_data *data, int num_stream, int at_start) {
int ok, i;
eamp3_frame_info eaf;
eamp3_frame_info eaf = {0};
int skips = at_start ? num_stream : data->streams_size - 1 - num_stream;
for (i = 0; i < skips; i++) {
ok = eamp3_parse_frame(stream, data, &eaf);
ok = eamp3_parse_frame(stream->streamfile, stream->offset, data, &eaf);
if (!ok) goto fail;
//;VGM_LOG("s%i: skipping %x, now at %lx\n", num_stream,eaf.frame_size,stream->offset);