* Musepack SV8 decoder
* Copyright (c) 2007 Konstantin Shishkov
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "get_bits.h"
#include "dsputil.h"
-#include "mpegaudio.h"
+#include "mpegaudiodsp.h"
#include "libavutil/audioconvert.h"
#include "mpc.h"
-#include "mpcdata.h"
#include "mpc8data.h"
#include "mpc8huff.h"
}
memset(c->oldDSCF, 0, sizeof(c->oldDSCF));
av_lfg_init(&c->rnd, 0xDEADBEEF);
- dsputil_init(&c->dsp, avctx);
+ ff_dsputil_init(&c->dsp, avctx);
+ ff_mpadsp_init(&c->mpadsp);
ff_mpc_init();
channels = get_bits(&gb, 4) + 1;
if (channels > 2) {
av_log_missing_feature(avctx, "Multichannel MPC SV8", 1);
- return -1;
+ return AVERROR_PATCHWELCOME;
}
c->MSS = get_bits1(&gb);
c->frames = 1 << (get_bits(&gb, 3) * 2);
- avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+ avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
avctx->channel_layout = (avctx->channels==2) ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
if(vlc_initialized) return 0;
q3_vlc[0].table = q3_0_table;
q3_vlc[0].table_allocated = 512;
- init_vlc_sparse(&q3_vlc[0], MPC8_Q3_BITS, MPC8_Q3_SIZE,
+ ff_init_vlc_sparse(&q3_vlc[0], MPC8_Q3_BITS, MPC8_Q3_SIZE,
mpc8_q3_bits, 1, 1,
mpc8_q3_codes, 1, 1,
mpc8_q3_syms, 1, 1, INIT_VLC_USE_NEW_STATIC);
q3_vlc[1].table = q3_1_table;
q3_vlc[1].table_allocated = 516;
- init_vlc_sparse(&q3_vlc[1], MPC8_Q4_BITS, MPC8_Q4_SIZE,
+ ff_init_vlc_sparse(&q3_vlc[1], MPC8_Q4_BITS, MPC8_Q4_SIZE,
mpc8_q4_bits, 1, 1,
mpc8_q4_codes, 1, 1,
mpc8_q4_syms, 1, 1, INIT_VLC_USE_NEW_STATIC);
&mpc8_q8_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC);
}
vlc_initialized = 1;
+
+ avcodec_get_frame_defaults(&c->frame);
+ avctx->coded_frame = &c->frame;
+
return 0;
}
-static int mpc8_decode_frame(AVCodecContext * avctx,
- void *data, int *data_size,
- AVPacket *avpkt)
+static int mpc8_decode_frame(AVCodecContext * avctx, void *data,
+ int *got_frame_ptr, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
int maxband, keyframe;
int last[2];
+ /* get output buffer */
+ c->frame.nb_samples = MPC_FRAME_SIZE;
+ if ((res = avctx->get_buffer(avctx, &c->frame)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return res;
+ }
+
keyframe = c->cur_frame == 0;
if(keyframe){
maxband = c->last_max_band + get_vlc2(gb, band_vlc.table, MPC8_BANDS_BITS, 2);
if(maxband > 32) maxband -= 33;
}
+ if(maxband > c->maxbands + 1)
+ return AVERROR_INVALIDDATA;
c->last_max_band = maxband;
/* read subband indexes */
}
}
- ff_mpc_dequantize_and_synth(c, maxband, data, avctx->channels);
+ ff_mpc_dequantize_and_synth(c, maxband - 1,
+ (int16_t **)c->frame.extended_data,
+ avctx->channels);
c->cur_frame++;
c->last_bits_used = get_bits_count(gb);
+ if(get_bits_left(gb) < 8) // we have only padding left
+ c->last_bits_used = buf_size << 3;
if(c->cur_frame >= c->frames)
c->cur_frame = 0;
- *data_size = MPC_FRAME_SIZE * 2 * avctx->channels;
+
+ *got_frame_ptr = 1;
+ *(AVFrame *)data = c->frame;
return c->cur_frame ? c->last_bits_used >> 3 : buf_size;
}
+static av_cold void mpc8_decode_flush(AVCodecContext *avctx)
+{
+ MPCContext *c = avctx->priv_data;
+ c->cur_frame = 0;
+}
+
AVCodec ff_mpc8_decoder = {
- "mpc8",
- AVMEDIA_TYPE_AUDIO,
- CODEC_ID_MUSEPACK8,
- sizeof(MPCContext),
- mpc8_decode_init,
- NULL,
- NULL,
- mpc8_decode_frame,
- .long_name = NULL_IF_CONFIG_SMALL("Musepack SV8"),
+ .name = "mpc8",
+ .type = AVMEDIA_TYPE_AUDIO,
+ .id = AV_CODEC_ID_MUSEPACK8,
+ .priv_data_size = sizeof(MPCContext),
+ .init = mpc8_decode_init,
+ .decode = mpc8_decode_frame,
+ .flush = mpc8_decode_flush,
+ .capabilities = CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("Musepack SV8"),
+ .sample_fmts = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
+ AV_SAMPLE_FMT_NONE },
};
projects / ffmpeg / blobdiff