Merge remote-tracking branch 'qatar/master'

* qatar/master:
  aac_latm: reconfigure decoder on audio specific config changes
  latmdec: fix audio specific config parsing
  Add avcodec_decode_audio4().
  avcodec: change number of plane pointers from 4 to 8 at next major bump.
  Update developers documentation with coding conventions.
  svq1dec: avoid undefined get_bits(0) call
  ARM: h264dsp_neon cosmetics
  ARM: make some NEON macros reusable
  Do not memcpy raw video frames when using null muxer
  fate: update asf seektest
  vp8: flush buffers on size changes.
  doc: improve general documentation for MacOSX
  asf: use packet dts as approximation of pts
  asf: do not call av_read_frame
  rtsp: Initialize the media_type_mask in the rtp guessing demuxer
  Cleaned up alacenc.c

Conflicts:
	doc/APIchanges
	doc/developer.texi
	libavcodec/8svx.c
	libavcodec/aacdec.c
	libavcodec/ac3dec.c
	libavcodec/avcodec.h
	libavcodec/nellymoserdec.c
	libavcodec/tta.c
	libavcodec/utils.c
	libavcodec/version.h
	libavcodec/wmadec.c
	libavformat/asfdec.c
	tests/ref/seek/lavf_asf

Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/pcm.c

@@ -192,6 +192,7 @@ static int pcm_encode_frame(AVCodecContext *avctx,
 }
 
 typedef struct PCMDecode {
+    AVFrame frame;
     short table[256];
 } PCMDecode;
 
@@ -223,6 +224,9 @@ static av_cold int pcm_decode_init(AVCodecContext * avctx)
     if (avctx->sample_fmt == AV_SAMPLE_FMT_S32)
         avctx->bits_per_raw_sample = av_get_bits_per_sample(avctx->codec->id);
 
+    avcodec_get_frame_defaults(&s->frame);
+    avctx->coded_frame = &s->frame;
+
     return 0;
 }
 
@@ -243,22 +247,20 @@ static av_cold int pcm_decode_init(AVCodecContext * avctx)
         dst += size / 8; \
     }
 
-static int pcm_decode_frame(AVCodecContext *avctx,
-                            void *data, int *data_size,
-                            AVPacket *avpkt)
+static int pcm_decode_frame(AVCodecContext *avctx, void *data,
+                            int *got_frame_ptr, AVPacket *avpkt)
 {
     const uint8_t *src = avpkt->data;
     int buf_size = avpkt->size;
     PCMDecode *s = avctx->priv_data;
-    int sample_size, c, n, out_size;
+    int sample_size, c, n, ret, samples_per_block;
     uint8_t *samples;
     int32_t *dst_int32_t;
 
-    samples = data;
-
     sample_size = av_get_bits_per_sample(avctx->codec_id)/8;
 
     /* av_get_bits_per_sample returns 0 for CODEC_ID_PCM_DVD */
+    samples_per_block = 1;
     if (CODEC_ID_PCM_DVD == avctx->codec_id) {
         if (avctx->bits_per_coded_sample != 20 &&
             avctx->bits_per_coded_sample != 24) {
@@ -268,10 +270,13 @@ static int pcm_decode_frame(AVCodecContext *avctx,
             return AVERROR(EINVAL);
         }
         /* 2 samples are interleaved per block in PCM_DVD */
+        samples_per_block = 2;
         sample_size = avctx->bits_per_coded_sample * 2 / 8;
-    } else if (avctx->codec_id == CODEC_ID_PCM_LXF)
+    } else if (avctx->codec_id == CODEC_ID_PCM_LXF) {
         /* we process 40-bit blocks per channel for LXF */
+        samples_per_block = 2;
         sample_size = 5;
+    }
 
     if (sample_size == 0) {
         av_log(avctx, AV_LOG_ERROR, "Invalid sample_size\n");
@@ -290,14 +295,13 @@ static int pcm_decode_frame(AVCodecContext *avctx,
 
     n = buf_size/sample_size;
 
-    out_size = n * av_get_bytes_per_sample(avctx->sample_fmt);
-    if (avctx->codec_id == CODEC_ID_PCM_DVD ||
-        avctx->codec_id == CODEC_ID_PCM_LXF)
-        out_size *= 2;
-    if (*data_size < out_size) {
-        av_log(avctx, AV_LOG_ERROR, "output buffer too small\n");
-        return AVERROR(EINVAL);
+    /* get output buffer */
+    s->frame.nb_samples = n * samples_per_block / avctx->channels;
+    if ((ret = avctx->get_buffer(avctx, &s->frame)) < 0) {
+        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+        return ret;
     }
+    samples = s->frame.data[0];
 
     switch(avctx->codec->id) {
     case CODEC_ID_PCM_U32LE:
@@ -403,7 +407,7 @@ static int pcm_decode_frame(AVCodecContext *avctx,
     case CODEC_ID_PCM_DVD:
     {
         const uint8_t *src8;
-        dst_int32_t = data;
+        dst_int32_t = (int32_t *)s->frame.data[0];
         n /= avctx->channels;
         switch (avctx->bits_per_coded_sample) {
         case 20:
@@ -435,7 +439,7 @@ static int pcm_decode_frame(AVCodecContext *avctx,
     {
         int i;
         const uint8_t *src8;
-        dst_int32_t = data;
+        dst_int32_t = (int32_t *)s->frame.data[0];
         n /= avctx->channels;
         //unpack and de-planerize
         for (i = 0; i < n; i++) {
@@ -456,7 +460,10 @@ static int pcm_decode_frame(AVCodecContext *avctx,
     default:
         return -1;
     }
-    *data_size = out_size;
+
+    *got_frame_ptr   = 1;
+    *(AVFrame *)data = s->frame;
+
     return buf_size;
 }
 
@@ -485,6 +492,7 @@ AVCodec ff_ ## name_ ## _decoder = {            \
     .priv_data_size = sizeof(PCMDecode),        \
     .init           = pcm_decode_init,          \
     .decode         = pcm_decode_frame,         \
+    .capabilities   = CODEC_CAP_DR1,            \
     .sample_fmts = (const enum AVSampleFormat[]){sample_fmt_,AV_SAMPLE_FMT_NONE}, \
     .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
 }