X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmpc7.c;h=1aed52b8a06b7f6069d8bcafe104f50bc6448e9f;hb=1d6e618939c1ba9c333d513fc7826719dae34031;hp=ab2f543db4032b4b0556f31184d75543584c93db;hpb=b5b825c3818c2792b06f0e97d190e3c0962f1a02;p=ffmpeg

diff --git a/libavcodec/mpc7.c b/libavcodec/mpc7.c
index ab2f543db40..1aed52b8a06 100644
--- a/libavcodec/mpc7.c
+++ b/libavcodec/mpc7.c
@@ -25,12 +25,14 @@
  * divided into 32 subbands.
  */
 
+#include "libavutil/channel_layout.h"
+#include "libavutil/internal.h"
 #include "libavutil/lfg.h"
 #include "avcodec.h"
 #include "get_bits.h"
 #include "dsputil.h"
+#include "internal.h"
 #include "mpegaudiodsp.h"
-#include "libavutil/audioconvert.h"
 
 #include "mpc.h"
 #include "mpc7data.h"
@@ -63,8 +65,7 @@ static av_cold int mpc7_decode_init(AVCodecContext * avctx)
 
     /* Musepack SV7 is always stereo */
     if (avctx->channels != 2) {
-        av_log_ask_for_sample(avctx, "Unsupported number of channels: %d\n",
-                              avctx->channels);
+        avpriv_request_sample(avctx, "%d channels", avctx->channels);
         return AVERROR_PATCHWELCOME;
     }
 
@@ -74,7 +75,7 @@ static av_cold int mpc7_decode_init(AVCodecContext * avctx)
     }
     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);
     c->dsp.bswap_buf((uint32_t*)buf, (const uint32_t*)avctx->extradata, 4);
     ff_mpc_init();
@@ -94,7 +95,7 @@ static av_cold int mpc7_decode_init(AVCodecContext * avctx)
             c->IS, c->MSS, c->gapless, c->lastframelen, c->maxbands);
     c->frames_to_skip = 0;
 
-    avctx->sample_fmt = AV_SAMPLE_FMT_S16;
+    avctx->sample_fmt = AV_SAMPLE_FMT_S16P;
     avctx->channel_layout = AV_CH_LAYOUT_STEREO;
 
     if(vlc_initialized) return 0;
@@ -137,9 +138,6 @@ static av_cold int mpc7_decode_init(AVCodecContext * avctx)
     }
     vlc_initialized = 1;
 
-    avcodec_get_frame_defaults(&c->frame);
-    avctx->coded_frame = &c->frame;
-
     return 0;
 }
 
@@ -193,17 +191,17 @@ static int get_scale_idx(GetBitContext *gb, int ref)
     int t = get_vlc2(gb, dscf_vlc.table, MPC7_DSCF_BITS, 1) - 7;
     if (t == 8)
         return get_bits(gb, 6);
-    return ref + t;
+    return av_clip_uintp2(ref + t, 7);
 }
 
 static int mpc7_decode_frame(AVCodecContext * avctx, void *data,
                              int *got_frame_ptr, AVPacket *avpkt)
 {
+    AVFrame *frame     = data;
     const uint8_t *buf = avpkt->data;
     int buf_size;
     MPCContext *c = avctx->priv_data;
     GetBitContext gb;
-    uint8_t *bits;
     int i, ch;
     int mb = -1;
     Band *bands = c->bands;
@@ -229,17 +227,17 @@ static int mpc7_decode_frame(AVCodecContext * avctx, void *data,
     buf_size  -= 4;
 
     /* get output buffer */
-    c->frame.nb_samples = last_frame ? c->lastframelen : MPC_FRAME_SIZE;
-    if ((ret = avctx->get_buffer(avctx, &c->frame)) < 0) {
+    frame->nb_samples = last_frame ? c->lastframelen : MPC_FRAME_SIZE;
+    if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) {
         av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
         return ret;
     }
 
-    bits = av_malloc(buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
-    if (!bits)
+    av_fast_padded_malloc(&c->bits, &c->buf_size, buf_size);
+    if (!c->bits)
         return AVERROR(ENOMEM);
-    c->dsp.bswap_buf((uint32_t *)bits, (const uint32_t *)buf, buf_size >> 2);
-    init_get_bits(&gb, bits, buf_size * 8);
+    c->dsp.bswap_buf((uint32_t *)c->bits, (const uint32_t *)buf, buf_size >> 2);
+    init_get_bits(&gb, c->bits, buf_size * 8);
     skip_bits_long(&gb, skip);
 
     /* read subband indexes */
@@ -248,7 +246,7 @@ static int mpc7_decode_frame(AVCodecContext * avctx, void *data,
             int t = 4;
             if(i) t = get_vlc2(&gb, hdr_vlc.table, MPC7_HDR_BITS, 1) - 5;
             if(t == 4) bands[i].res[ch] = get_bits(&gb, 4);
-            else bands[i].res[ch] = bands[i-1].res[ch] + t;
+            else bands[i].res[ch] = av_clip(bands[i-1].res[ch] + t, 0, 17);
         }
 
         if(bands[i].res[0] || bands[i].res[1]){
@@ -294,14 +292,12 @@ static int mpc7_decode_frame(AVCodecContext * avctx, void *data,
         for(ch = 0; ch < 2; ch++)
             idx_to_quant(c, &gb, bands[i].res[ch], c->Q[ch] + off);
 
-    ff_mpc_dequantize_and_synth(c, mb, c->frame.data[0], 2);
-
-    av_free(bits);
+    ff_mpc_dequantize_and_synth(c, mb, (int16_t **)frame->extended_data, 2);
 
     bits_used = get_bits_count(&gb);
     bits_avail = buf_size * 8;
     if (!last_frame && ((bits_avail < bits_used) || (bits_used + 32 <= bits_avail))) {
-        av_log(NULL,0, "Error decoding frame: used %i of %i bits\n", bits_used, bits_avail);
+        av_log(avctx, AV_LOG_ERROR, "Error decoding frame: used %i of %i bits\n", bits_used, bits_avail);
         return -1;
     }
     if(c->frames_to_skip){
@@ -310,8 +306,7 @@ static int mpc7_decode_frame(AVCodecContext * avctx, void *data,
         return avpkt->size;
     }
 
-    *got_frame_ptr   = 1;
-    *(AVFrame *)data = c->frame;
+    *got_frame_ptr = 1;
 
     return avpkt->size;
 }
@@ -324,14 +319,25 @@ static void mpc7_decode_flush(AVCodecContext *avctx)
     c->frames_to_skip = 32;
 }
 
+static av_cold int mpc7_decode_close(AVCodecContext *avctx)
+{
+    MPCContext *c = avctx->priv_data;
+    av_freep(&c->bits);
+    c->buf_size = 0;
+    return 0;
+}
+
 AVCodec ff_mpc7_decoder = {
     .name           = "mpc7",
     .type           = AVMEDIA_TYPE_AUDIO,
-    .id             = CODEC_ID_MUSEPACK7,
+    .id             = AV_CODEC_ID_MUSEPACK7,
     .priv_data_size = sizeof(MPCContext),
     .init           = mpc7_decode_init,
+    .close          = mpc7_decode_close,
     .decode         = mpc7_decode_frame,
-    .flush = mpc7_decode_flush,
+    .flush          = mpc7_decode_flush,
     .capabilities   = CODEC_CAP_DR1,
-    .long_name = NULL_IF_CONFIG_SMALL("Musepack SV7"),
+    .long_name      = NULL_IF_CONFIG_SMALL("Musepack SV7"),
+    .sample_fmts    = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
+                                                      AV_SAMPLE_FMT_NONE },
 };