* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "libavutil/intmath.h"
+#include "libavutil/channel_layout.h"
#include "avcodec.h"
#include "get_bits.h"
+#include "internal.h"
#include "ra144.h"
ractx->lpc_coef[0] = ractx->lpc_tables[0];
ractx->lpc_coef[1] = ractx->lpc_tables[1];
- avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+ avctx->channels = 1;
+ avctx->channel_layout = AV_CH_LAYOUT_MONO;
+ avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+
return 0;
}
}
/** Uncompress one block (20 bytes -> 160*2 bytes). */
-static int ra144_decode_frame(AVCodecContext * avctx, void *vdata,
- int *data_size, AVPacket *avpkt)
+static int ra144_decode_frame(AVCodecContext * avctx, void *data,
+ int *got_frame_ptr, AVPacket *avpkt)
{
+ AVFrame *frame = data;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
- static const uint8_t sizes[10] = {6, 5, 5, 4, 4, 3, 3, 3, 3, 2};
- unsigned int refl_rms[4]; // RMS of the reflection coefficients
- uint16_t block_coefs[4][10]; // LPC coefficients of each sub-block
- unsigned int lpc_refl[10]; // LPC reflection coefficients of the frame
+ static const uint8_t sizes[LPC_ORDER] = {6, 5, 5, 4, 4, 3, 3, 3, 3, 2};
+ unsigned int refl_rms[NBLOCKS]; // RMS of the reflection coefficients
+ uint16_t block_coefs[NBLOCKS][LPC_ORDER]; // LPC coefficients of each sub-block
+ unsigned int lpc_refl[LPC_ORDER]; // LPC reflection coefficients of the frame
int i, j;
- int out_size;
- int16_t *data = vdata;
+ int ret;
+ int16_t *samples;
unsigned int energy;
RA144Context *ractx = avctx->priv_data;
GetBitContext gb;
- out_size = NBLOCKS * BLOCKSIZE * av_get_bytes_per_sample(avctx->sample_fmt);
- if (*data_size < out_size) {
- av_log(avctx, AV_LOG_ERROR, "Output buffer is too small\n");
- return AVERROR(EINVAL);
- }
-
- if(buf_size < 20) {
+ if (buf_size < FRAMESIZE) {
av_log(avctx, AV_LOG_ERROR,
"Frame too small (%d bytes). Truncated file?\n", buf_size);
- *data_size = 0;
- return buf_size;
+ *got_frame_ptr = 0;
+ return AVERROR_INVALIDDATA;
}
- init_get_bits(&gb, buf, 20 * 8);
- for (i=0; i<10; i++)
+ /* get output buffer */
+ frame->nb_samples = NBLOCKS * BLOCKSIZE;
+ if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
+ }
+ samples = (int16_t *)frame->data[0];
+
+ init_get_bits(&gb, buf, FRAMESIZE * 8);
+
+ for (i = 0; i < LPC_ORDER; i++)
lpc_refl[i] = ff_lpc_refl_cb[i][get_bits(&gb, sizes[i])];
ff_eval_coefs(ractx->lpc_coef[0], lpc_refl);
ff_int_to_int16(block_coefs[3], ractx->lpc_coef[0]);
- for (i=0; i < 4; i++) {
+ for (i=0; i < NBLOCKS; i++) {
do_output_subblock(ractx, block_coefs[i], refl_rms[i], &gb);
for (j=0; j < BLOCKSIZE; j++)
- *data++ = av_clip_int16(ractx->curr_sblock[j + 10] << 2);
+ *samples++ = av_clip_int16(ractx->curr_sblock[j + 10] << 2);
}
ractx->old_energy = energy;
FFSWAP(unsigned int *, ractx->lpc_coef[0], ractx->lpc_coef[1]);
- *data_size = out_size;
- return 20;
+ *got_frame_ptr = 1;
+
+ return FRAMESIZE;
}
AVCodec ff_ra_144_decoder = {
.name = "real_144",
.type = AVMEDIA_TYPE_AUDIO,
- .id = CODEC_ID_RA_144,
+ .id = AV_CODEC_ID_RA_144,
.priv_data_size = sizeof(RA144Context),
.init = ra144_decode_init,
.decode = ra144_decode_frame,
+ .capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("RealAudio 1.0 (14.4K)"),
};