41 #if CONFIG_LIBOPENCORE_AMRNB
43 #include <opencore-amrnb/interf_dec.h>
44 #include <opencore-amrnb/interf_enc.h>
47 typedef struct AMR_bitrates {
53 static int get_bitrate_mode(
int bitrate,
void *log_ctx)
56 static const AMR_bitrates rates[] = {
57 { 4750, MR475 }, { 5150, MR515 }, { 5900, MR59 }, { 6700, MR67 },
58 { 7400, MR74 }, { 7950, MR795 }, { 10200, MR102 }, { 12200, MR122 }
60 int i, best = -1, min_diff = 0;
63 for (i = 0; i < 8; i++) {
64 if (rates[i].rate == bitrate)
66 if (best < 0 || abs(rates[i].rate - bitrate) < min_diff) {
68 min_diff = abs(rates[i].rate - bitrate);
72 snprintf(log_buf,
sizeof(log_buf),
"bitrate not supported: use one of ");
73 for (i = 0; i < 8; i++)
74 av_strlcatf(log_buf,
sizeof(log_buf),
"%.2fk, ", rates[i].rate / 1000.
f);
75 av_strlcatf(log_buf,
sizeof(log_buf),
"using %.2fk", rates[best].rate / 1000.
f);
104 s->dec_state = Decoder_Interface_init();
127 Decoder_Interface_exit(s->dec_state);
133 int *got_frame_ptr,
AVPacket *avpkt)
135 const uint8_t *buf = avpkt->
data;
136 int buf_size = avpkt->
size;
138 static const uint8_t block_size[16] = { 12, 13, 15, 17, 19, 20, 26, 31, 5, 0, 0, 0, 0, 0, 0, 0 };
140 int packet_size, ret;
142 av_dlog(avctx,
"amr_decode_frame buf=%p buf_size=%d frame_count=%d!!\n",
146 s->
frame.nb_samples = 160;
152 dec_mode = (buf[0] >> 3) & 0x000F;
153 packet_size = block_size[dec_mode] + 1;
155 if (packet_size > buf_size) {
157 buf_size, packet_size);
161 av_dlog(avctx,
"packet_size=%d buf= 0x%X %X %X %X\n",
162 packet_size, buf[0], buf[1], buf[2], buf[3]);
164 Decoder_Interface_Decode(s->dec_state, buf, (
short *)s->
frame.data[0], 0);
172 AVCodec ff_libopencore_amrnb_decoder = {
173 .
name =
"libopencore_amrnb",
177 .
init = amr_nb_decode_init,
178 .
close = amr_nb_decode_close,
179 .
decode = amr_nb_decode_frame,
201 s->enc_state = Encoder_Interface_init(s->enc_dtx);
207 s->enc_mode = get_bitrate_mode(avctx->
bit_rate, avctx);
217 Encoder_Interface_exit(s->enc_state);
223 unsigned char *frame,
224 int buf_size,
void *data)
229 if (s->enc_bitrate != avctx->
bit_rate) {
230 s->enc_mode = get_bitrate_mode(avctx->
bit_rate, avctx);
234 written = Encoder_Interface_Encode(s->enc_state, s->enc_mode, data,
236 av_dlog(avctx,
"amr_nb_encode_frame encoded %u bytes, bitrate %u, first byte was %#02x\n",
237 written, s->enc_mode, frame[0]);
242 AVCodec ff_libopencore_amrnb_encoder = {
243 .
name =
"libopencore_amrnb",
247 .
init = amr_nb_encode_init,
248 .encode = amr_nb_encode_frame,
249 .
close = amr_nb_encode_close,
252 .priv_class = &
class,
258 #if CONFIG_LIBOPENCORE_AMRWB
260 #include <opencore-amrwb/dec_if.h>
261 #include <opencore-amrwb/if_rom.h>
272 s->
state = D_IF_init();
288 int *got_frame_ptr,
AVPacket *avpkt)
290 const uint8_t *buf = avpkt->
data;
291 int buf_size = avpkt->
size;
295 static const uint8_t block_size[16] = {18, 24, 33, 37, 41, 47, 51, 59, 61, 6, 6, 0, 0, 0, 1, 1};
298 s->
frame.nb_samples = 320;
304 mode = (buf[0] >> 3) & 0x000F;
305 packet_size = block_size[mode];
307 if (packet_size > buf_size) {
309 buf_size, packet_size + 1);
313 D_IF_decode(s->
state, buf, (
short *)s->
frame.data[0], _good_frame);
329 AVCodec ff_libopencore_amrwb_decoder = {
330 .
name =
"libopencore_amrwb",
334 .
init = amr_wb_decode_init,
335 .
close = amr_wb_decode_close,
336 .
decode = amr_wb_decode_frame,