*/
#include "libavutil/channel_layout.h"
+
+#include "adpcm_data.h"
#include "avcodec.h"
#include "get_bits.h"
#include "internal.h"
-#include "adpcm_data.h"
static int predict_table_init = 0;
static uint16_t predict_table[5786 * 2];
-static const uint8_t size_table[] =
-{
+static const uint8_t size_table[] = {
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7
};
-static const int8_t index_table1[] =
-{
+static const int8_t index_table1[] = {
-1, 4, -1, 4
};
-static const int8_t index_table2[] =
-{
+static const int8_t index_table2[] = {
-1, -1, 2, 6, -1, -1, 2, 6
};
-static const int8_t index_table3[] =
-{
- -1, -1, -1, -1, 1, 2, 4, 6,
- -1, -1, -1, -1, 1, 2, 4, 6
+static const int8_t index_table3[] = {
+ -1, -1, -1, -1, 1, 2, 4, 6, -1, -1, -1, -1, 1, 2, 4, 6
};
-static const int8_t index_table4[] =
-{
- -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 2, 2, 4, 5, 6,
- -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 2, 2, 4, 5, 6
+static const int8_t index_table4[] = {
+ -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 2, 2, 4, 5, 6,
+ -1, -1, -1, -1, -1, -1, -1, -1, 1, 1, 1, 2, 2, 4, 5, 6
};
-static const int8_t index_table5[] =
-{
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 2, 2, 2,
- 2, 4, 4, 4, 5, 5, 6, 6,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 2, 2, 2,
- 2, 4, 4, 4, 5, 5, 6, 6
+static const int8_t index_table5[] = {
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 1, 1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 4, 5, 5, 6, 6,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 1, 1, 1, 1, 1, 2, 2, 2, 2, 4, 4, 4, 5, 5, 6, 6
};
-static const int8_t index_table6[] =
-{
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 2, 2, 2, 2, 2, 2,
- 2, 2, 4, 4, 4, 4, 4, 4,
- 5, 5, 5, 5, 6, 6, 6, 6,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 1, 1, 1,
- 1, 1, 2, 2, 2, 2, 2, 2,
- 2, 2, 4, 4, 4, 4, 4, 4,
- 5, 5, 5, 5, 6, 6, 6, 6
+static const int8_t index_table6[] = {
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2,
+ 2, 2, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2,
+ 2, 2, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6
};
-static const int8_t* const step_index_tables[] =
-{
+static const int8_t *const step_index_tables[] = {
index_table1, index_table2, index_table3,
index_table4, index_table5, index_table6
};
static int decode_frame(AVCodecContext *avctx, void *data,
int *got_frame_ptr, AVPacket *pkt)
{
- GetBitContext gb;
- AVFrame *frame = data;
- int16_t pcm_data[2];
- uint32_t samples;
- int8_t channel_hint[2];
- int ret, chan, channels = 1;
+ GetBitContext gb;
+ AVFrame *frame = data;
+ int16_t pcm_data[2];
+ uint32_t samples;
+ int8_t channel_hint[2];
+ int ret, chan;
+ int channels = 1;
if (pkt->size < 13)
return AVERROR_INVALIDDATA;
channels = 2;
}
avctx->channels = channels;
- avctx->channel_layout = (channels == 2) ? AV_CH_LAYOUT_STEREO :
- AV_CH_LAYOUT_MONO;
+ avctx->channel_layout = (channels == 2) ? AV_CH_LAYOUT_STEREO
+ : AV_CH_LAYOUT_MONO;
pcm_data[0] = get_sbits(&gb, 16);
if (channels > 1) {
channel_hint[1] = get_sbits(&gb, 8);
- pcm_data[1] = get_sbits(&gb, 16);
+ pcm_data[1] = get_sbits(&gb, 16);
}
frame->nb_samples = samples;
return ret;
for (chan = 0; chan < channels; chan++) {
- uint16_t *dest = (uint16_t*)frame->data[0] + chan;
+ uint16_t *dest = (uint16_t *)frame->data[0] + chan;
int step_index = channel_hint[chan];
int output = pcm_data[chan];
int sample;
if (lookup)
diff += ff_adpcm_step_table[step_index] >> (lookup_size - 1);
if (highbit)
- diff = -diff;
+ diff = -diff;
- output = av_clip_int16(output + diff);
+ output = av_clip_int16(output + diff);
}
*dest = output;
}
}
- *got_frame_ptr = 1;
+ *got_frame_ptr = 1;
return pkt->size;
}
+AVCodec ff_adpcm_vima_decoder = {
+ .name = "adpcm_vima",
+ .long_name = NULL_IF_CONFIG_SMALL("LucasArts VIMA audio"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_ADPCM_VIMA,
+ .init = decode_init,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1,
+};
+
AVCodec ff_vima_decoder = {
- .name = "vima",
- .long_name = NULL_IF_CONFIG_SMALL("LucasArts VIMA audio"),
- .type = AVMEDIA_TYPE_AUDIO,
- .id = AV_CODEC_ID_VIMA,
- .init = decode_init,
- .decode = decode_frame,
- .capabilities = CODEC_CAP_DR1,
+ .name = "vima",
+ .long_name = NULL_IF_CONFIG_SMALL("LucasArts VIMA audio"),
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_ADPCM_VIMA,
+ .init = decode_init,
+ .decode = decode_frame,
+ .capabilities = CODEC_CAP_DR1,
};