* MPEG Audio decoder
*/
+#define UNCHECKED_BITSTREAM_READER 1
+
#include "libavutil/audioconvert.h"
#include "avcodec.h"
#include "get_bits.h"
int err_recognition;
AVCodecContext* avctx;
MPADSPContext mpadsp;
+ AVFrame frame;
} MPADecodeContext;
#if CONFIG_FLOAT
return m;
}
-static void decode_init_static(AVCodec *codec)
+static av_cold void decode_init_static(void)
{
int i, j, k;
int offset;
static av_cold int decode_init(AVCodecContext * avctx)
{
+ static int initialized_tables = 0;
MPADecodeContext *s = avctx->priv_data;
+ if (!initialized_tables) {
+ decode_init_static();
+ initialized_tables = 1;
+ }
+
s->avctx = avctx;
ff_mpadsp_init(&s->mpadsp);
if (avctx->codec_id == CODEC_ID_MP3ADU)
s->adu_mode = 1;
+
+ avcodec_get_frame_defaults(&s->frame);
+ avctx->coded_frame = &s->frame;
+
return 0;
}
}
if (!s->adu_mode) {
+ int skip;
const uint8_t *ptr = s->gb.buffer + (get_bits_count(&s->gb)>>3);
assert((get_bits_count(&s->gb) & 7) == 0);
/* now we get bits from the main_data_begin offset */
memcpy(s->last_buf + s->last_buf_size, ptr, EXTRABYTES);
s->in_gb = s->gb;
init_get_bits(&s->gb, s->last_buf, s->last_buf_size*8);
+#if !UNCHECKED_BITSTREAM_READER
+ s->gb.size_in_bits_plus8 += EXTRABYTES * 8;
+#endif
skip_bits_long(&s->gb, 8*(s->last_buf_size - main_data_begin));
}
static int mp_decode_frame(MPADecodeContext *s, OUT_INT *samples,
const uint8_t *buf, int buf_size)
{
- int i, nb_frames, ch;
+ int i, nb_frames, ch, ret;
OUT_INT *samples_ptr;
init_get_bits(&s->gb, buf + HEADER_SIZE, (buf_size - HEADER_SIZE) * 8);
assert(i <= buf_size - HEADER_SIZE && i >= 0);
memcpy(s->last_buf + s->last_buf_size, s->gb.buffer + buf_size - HEADER_SIZE - i, i);
s->last_buf_size += i;
+ }
- break;
+ /* get output buffer */
+ if (!samples) {
+ s->frame.nb_samples = s->avctx->frame_size;
+ if ((ret = s->avctx->get_buffer(s->avctx, &s->frame)) < 0) {
+ av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
+ }
+ samples = (OUT_INT *)s->frame.data[0];
}
/* apply the synthesis filter */
return nb_frames * 32 * sizeof(OUT_INT) * s->nb_channels;
}
-static int decode_frame(AVCodecContext * avctx, void *data, int *data_size,
+static int decode_frame(AVCodecContext * avctx, void *data, int *got_frame_ptr,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
MPADecodeContext *s = avctx->priv_data;
uint32_t header;
int out_size;
- OUT_INT *out_samples = data;
if (buf_size < HEADER_SIZE)
return AVERROR_INVALIDDATA;
avctx->bit_rate = s->bit_rate;
avctx->sub_id = s->layer;
- if (*data_size < avctx->frame_size * avctx->channels * sizeof(OUT_INT))
- return AVERROR(EINVAL);
- *data_size = 0;
-
if (s->frame_size <= 0 || s->frame_size > buf_size) {
av_log(avctx, AV_LOG_ERROR, "incomplete frame\n");
return AVERROR_INVALIDDATA;
buf_size= s->frame_size;
}
- out_size = mp_decode_frame(s, out_samples, buf, buf_size);
+ out_size = mp_decode_frame(s, NULL, buf, buf_size);
if (out_size >= 0) {
- *data_size = out_size;
+ *got_frame_ptr = 1;
+ *(AVFrame *)data = s->frame;
avctx->sample_rate = s->sample_rate;
//FIXME maybe move the other codec info stuff from above here too
} else {
If there is more data in the packet, just consume the bad frame
instead of returning an error, which would discard the whole
packet. */
+ *got_frame_ptr = 0;
if (buf_size == avpkt->size)
return out_size;
}
}
#if CONFIG_MP3ADU_DECODER || CONFIG_MP3ADUFLOAT_DECODER
-static int decode_frame_adu(AVCodecContext *avctx, void *data, int *data_size,
- AVPacket *avpkt)
+static int decode_frame_adu(AVCodecContext *avctx, void *data,
+ int *got_frame_ptr, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
MPADecodeContext *s = avctx->priv_data;
uint32_t header;
int len, out_size;
- OUT_INT *out_samples = data;
len = buf_size;
avctx->bit_rate = s->bit_rate;
avctx->sub_id = s->layer;
- if (*data_size < avctx->frame_size * avctx->channels * sizeof(OUT_INT))
- return AVERROR(EINVAL);
-
s->frame_size = len;
#if FF_API_PARSE_FRAME
out_size = buf_size;
else
#endif
- out_size = mp_decode_frame(s, out_samples, buf, buf_size);
+ out_size = mp_decode_frame(s, NULL, buf, buf_size);
+
+ *got_frame_ptr = 1;
+ *(AVFrame *)data = s->frame;
- *data_size = out_size;
return buf_size;
}
#endif /* CONFIG_MP3ADU_DECODER || CONFIG_MP3ADUFLOAT_DECODER */
* Context for MP3On4 decoder
*/
typedef struct MP3On4DecodeContext {
+ AVFrame *frame;
int frames; ///< number of mp3 frames per block (number of mp3 decoder instances)
int syncword; ///< syncword patch
const uint8_t *coff; ///< channel offsets in output buffer
return AVERROR_INVALIDDATA;
}
- avpriv_mpeg4audio_get_config(&cfg, avctx->extradata, avctx->extradata_size);
+ avpriv_mpeg4audio_get_config(&cfg, avctx->extradata,
+ avctx->extradata_size * 8, 1);
if (!cfg.chan_config || cfg.chan_config > 7) {
av_log(avctx, AV_LOG_ERROR, "Invalid channel config number.\n");
return AVERROR_INVALIDDATA;
// Put decoder context in place to make init_decode() happy
avctx->priv_data = s->mp3decctx[0];
decode_init(avctx);
+ s->frame = avctx->coded_frame;
// Restore mp3on4 context pointer
avctx->priv_data = s;
s->mp3decctx[0]->adu_mode = 1; // Set adu mode
}
-static int decode_frame_mp3on4(AVCodecContext * avctx,
- void *data, int *data_size,
- AVPacket *avpkt)
+static int decode_frame_mp3on4(AVCodecContext *avctx, void *data,
+ int *got_frame_ptr, AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
MPADecodeContext *m;
int fsize, len = buf_size, out_size = 0;
uint32_t header;
- OUT_INT *out_samples = data;
+ OUT_INT *out_samples;
OUT_INT *outptr, *bp;
- int fr, j, n, ch;
+ int fr, j, n, ch, ret;
- if (*data_size < MPA_FRAME_SIZE * avctx->channels * sizeof(OUT_INT)) {
- av_log(avctx, AV_LOG_ERROR, "output buffer is too small\n");
- return AVERROR(EINVAL);
+ /* get output buffer */
+ s->frame->nb_samples = MPA_FRAME_SIZE;
+ if ((ret = avctx->get_buffer(avctx, s->frame)) < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ return ret;
}
+ out_samples = (OUT_INT *)s->frame->data[0];
// Discard too short frames
if (buf_size < HEADER_SIZE)
/* update codec info */
avctx->sample_rate = s->mp3decctx[0]->sample_rate;
- *data_size = out_size;
+ s->frame->nb_samples = out_size / (avctx->channels * sizeof(OUT_INT));
+ *got_frame_ptr = 1;
+ *(AVFrame *)data = *s->frame;
+
return buf_size;
}
#endif /* CONFIG_MP3ON4_DECODER || CONFIG_MP3ON4FLOAT_DECODER */
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_MP1,
.priv_data_size = sizeof(MPADecodeContext),
- .init_static_data = decode_init_static,
.init = decode_init,
.decode = decode_frame,
#if FF_API_PARSE_FRAME
- .capabilities = CODEC_CAP_PARSE_ONLY,
+ .capabilities = CODEC_CAP_PARSE_ONLY | CODEC_CAP_DR1,
+#else
+ .capabilities = CODEC_CAP_DR1,
#endif
.flush = flush,
.long_name = NULL_IF_CONFIG_SMALL("MP1 (MPEG audio layer 1)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_MP2,
.priv_data_size = sizeof(MPADecodeContext),
- .init_static_data = decode_init_static,
.init = decode_init,
.decode = decode_frame,
#if FF_API_PARSE_FRAME
- .capabilities = CODEC_CAP_PARSE_ONLY,
+ .capabilities = CODEC_CAP_PARSE_ONLY | CODEC_CAP_DR1,
+#else
+ .capabilities = CODEC_CAP_DR1,
#endif
.flush = flush,
.long_name = NULL_IF_CONFIG_SMALL("MP2 (MPEG audio layer 2)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_MP3,
.priv_data_size = sizeof(MPADecodeContext),
- .init_static_data = decode_init_static,
.init = decode_init,
.decode = decode_frame,
#if FF_API_PARSE_FRAME
- .capabilities = CODEC_CAP_PARSE_ONLY,
+ .capabilities = CODEC_CAP_PARSE_ONLY | CODEC_CAP_DR1,
+#else
+ .capabilities = CODEC_CAP_DR1,
#endif
.flush = flush,
.long_name = NULL_IF_CONFIG_SMALL("MP3 (MPEG audio layer 3)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_MP3ADU,
.priv_data_size = sizeof(MPADecodeContext),
- .init_static_data = decode_init_static,
.init = decode_init,
.decode = decode_frame_adu,
#if FF_API_PARSE_FRAME
- .capabilities = CODEC_CAP_PARSE_ONLY,
+ .capabilities = CODEC_CAP_PARSE_ONLY | CODEC_CAP_DR1,
+#else
+ .capabilities = CODEC_CAP_DR1,
#endif
.flush = flush,
.long_name = NULL_IF_CONFIG_SMALL("ADU (Application Data Unit) MP3 (MPEG audio layer 3)"),
.type = AVMEDIA_TYPE_AUDIO,
.id = CODEC_ID_MP3ON4,
.priv_data_size = sizeof(MP3On4DecodeContext),
- .init_static_data = decode_init_static,
.init = decode_init_mp3on4,
.close = decode_close_mp3on4,
.decode = decode_frame_mp3on4,
+ .capabilities = CODEC_CAP_DR1,
.flush = flush_mp3on4,
.long_name = NULL_IF_CONFIG_SMALL("MP3onMP4"),
};
projects / ffmpeg / blobdiff