#include <opus.h>
#include <opus_multistream.h>
-#include "libavutil/common.h"
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
+#include "internal.h"
#include "vorbis.h"
#include "mathops.h"
+#include "libopus.h"
struct libopus_context {
OpusMSDecoder *dec;
- AVFrame frame;
};
-static int opus_error_to_averror(int err)
-{
- switch (err) {
- case OPUS_BAD_ARG:
- return AVERROR(EINVAL);
- case OPUS_BUFFER_TOO_SMALL:
- return AVERROR_UNKNOWN;
- case OPUS_INTERNAL_ERROR:
- return AVERROR(EFAULT);
- case OPUS_INVALID_PACKET:
- return AVERROR_INVALIDDATA;
- case OPUS_UNIMPLEMENTED:
- return AVERROR(ENOSYS);
- case OPUS_INVALID_STATE:
- return AVERROR_UNKNOWN;
- case OPUS_ALLOC_FAIL:
- return AVERROR(ENOMEM);
- default:
- return AVERROR(EINVAL);
- }
-}
-
-static inline void reorder(uint8_t *data, unsigned channels, unsigned bps,
- unsigned samples, const uint8_t *map)
-{
- uint8_t tmp[8 * 4];
- unsigned i;
-
- av_assert1(channels * bps <= sizeof(tmp));
- for (; samples > 0; samples--) {
- for (i = 0; i < channels; i++)
- memcpy(tmp + bps * i, data + bps * map[i], bps);
- memcpy(data, tmp, bps * channels);
- data += bps * channels;
- }
-}
-
#define OPUS_HEAD_SIZE 19
static av_cold int libopus_decode_init(AVCodecContext *avc)
{
struct libopus_context *opus = avc->priv_data;
int ret, channel_map = 0, gain_db = 0, nb_streams, nb_coupled;
- uint8_t mapping_stereo[] = { 0, 1 }, *mapping;
+ uint8_t mapping_arr[8] = { 0, 1 }, *mapping;
avc->sample_rate = 48000;
avc->sample_fmt = avc->request_sample_fmt == AV_SAMPLE_FMT_FLT ?
}
nb_streams = 1;
nb_coupled = avc->channels > 1;
- mapping = mapping_stereo;
+ mapping = mapping_arr;
+ }
+
+ if (avc->channels > 2 && avc->channels <= 8) {
+ const uint8_t *vorbis_offset = ff_vorbis_channel_layout_offsets[avc->channels - 1];
+ int ch;
+
+ /* Remap channels from vorbis order to libav order */
+ for (ch = 0; ch < avc->channels; ch++)
+ mapping_arr[ch] = mapping[vorbis_offset[ch]];
+ mapping = mapping_arr;
}
opus->dec = opus_multistream_decoder_create(avc->sample_rate, avc->channels,
if (!opus->dec) {
av_log(avc, AV_LOG_ERROR, "Unable to create decoder: %s\n",
opus_strerror(ret));
- return opus_error_to_averror(ret);
+ return ff_opus_error_to_averror(ret);
}
ret = opus_multistream_decoder_ctl(opus->dec, OPUS_SET_GAIN(gain_db));
opus_strerror(ret));
avc->delay = 3840; /* Decoder delay (in samples) at 48kHz */
- avcodec_get_frame_defaults(&opus->frame);
- avc->coded_frame = &opus->frame;
+
return 0;
}
#define MAX_FRAME_SIZE (960 * 6)
-static int libopus_decode(AVCodecContext *avc, void *frame,
+static int libopus_decode(AVCodecContext *avc, void *data,
int *got_frame_ptr, AVPacket *pkt)
{
struct libopus_context *opus = avc->priv_data;
+ AVFrame *frame = data;
int ret, nb_samples;
- opus->frame.nb_samples = MAX_FRAME_SIZE;
- ret = avc->get_buffer(avc, &opus->frame);
+ frame->nb_samples = MAX_FRAME_SIZE;
+ ret = ff_get_buffer(avc, frame, 0);
if (ret < 0) {
av_log(avc, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
if (avc->sample_fmt == AV_SAMPLE_FMT_S16)
nb_samples = opus_multistream_decode(opus->dec, pkt->data, pkt->size,
- (opus_int16 *)opus->frame.data[0],
- opus->frame.nb_samples, 0);
+ (opus_int16 *)frame->data[0],
+ frame->nb_samples, 0);
else
nb_samples = opus_multistream_decode_float(opus->dec, pkt->data, pkt->size,
- (float *)opus->frame.data[0],
- opus->frame.nb_samples, 0);
+ (float *)frame->data[0],
+ frame->nb_samples, 0);
if (nb_samples < 0) {
av_log(avc, AV_LOG_ERROR, "Decoding error: %s\n",
opus_strerror(nb_samples));
- return opus_error_to_averror(nb_samples);
+ return ff_opus_error_to_averror(nb_samples);
}
- if (avc->channels > 3 && avc->channels <= 8) {
- const uint8_t *m = ff_vorbis_channel_layout_offsets[avc->channels - 1];
- if (avc->sample_fmt == AV_SAMPLE_FMT_S16)
- reorder(opus->frame.data[0], avc->channels, 2, nb_samples, m);
- else
- reorder(opus->frame.data[0], avc->channels, 4, nb_samples, m);
- }
+ frame->nb_samples = nb_samples;
+ *got_frame_ptr = 1;
- opus->frame.nb_samples = nb_samples;
- *(AVFrame *)frame = opus->frame;
- *got_frame_ptr = 1;
return pkt->size;
}