Merge remote-tracking branch 'qatar/master'

* qatar/master:
  cosmetics: fix some then/than typos
  doxygen: Include libavcodec and libavformat examples into the documentation
  avutil: elaborate documentation for av_get_random_seed
  Add support for aac streams in mp4/mov without extradata.
  aes: whitespace cosmetics
  adler32: whitespace cosmetics
  swscale: fix another yuv range conversion overflow in 16bit scaling.
  Fix cpu flags test program
  opt-test: Add missing braces to silence compiler warnings.
  build: Eliminate obsolete test targets.
  udp: Fix a compilation warning
  swscale: Unbreak build with --enable-small
  base64: add fate test
  aes: improve test program and add fate test
  adler32: make test program more useful and add fate test
  swscale: fix yuv range correction when using 16-bit scaling.
  aacenc: Make chan_map const correct

Conflicts:
	Makefile
	doc/examples/muxing-example.c
	libavformat/udp.c
	libavutil/random_seed.h

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

8 files changed, 52 insertions, 10 deletions

diff --git a/libavcodec/aacdec.c b/libavcodec/aacdec.c
index cb8760801a..8a936da59e 100644
--- a/libavcodec/aacdec.c
+++ b/libavcodec/aacdec.c
@@ -532,6 +532,22 @@ static void reset_all_predictors(PredictorState *ps)
         reset_predict_state(&ps[i]);
 }
 
+static int sample_rate_idx (int rate)
+{
+         if (92017 <= rate) return 0;
+    else if (75132 <= rate) return 1;
+    else if (55426 <= rate) return 2;
+    else if (46009 <= rate) return 3;
+    else if (37566 <= rate) return 4;
+    else if (27713 <= rate) return 5;
+    else if (23004 <= rate) return 6;
+    else if (18783 <= rate) return 7;
+    else if (13856 <= rate) return 8;
+    else if (11502 <= rate) return 9;
+    else if (9391  <= rate) return 10;
+    else                    return 11;
+}
+
 static void reset_predictor_group(PredictorState *ps, int group_num)
 {
     int i;
@@ -554,10 +570,33 @@ static av_cold int aac_decode_init(AVCodecContext *avctx)
     ac->m4ac.sample_rate = avctx->sample_rate;
 
     if (avctx->extradata_size > 0) {
+        avctx->channels    = 0;
+        avctx->frame_size  = 0;
+        avctx->sample_rate = 0;
         if (decode_audio_specific_config(ac, ac->avctx, &ac->m4ac,
                                          avctx->extradata,
                                          avctx->extradata_size) < 0)
             return -1;
+    } else {
+        int sr, i;
+        enum ChannelPosition new_che_pos[4][MAX_ELEM_ID];
+
+        sr = sample_rate_idx(avctx->sample_rate);
+        ac->m4ac.sampling_index = sr;
+        ac->m4ac.channels = avctx->channels;
+
+        for (i = 0; i < FF_ARRAY_ELEMS(ff_mpeg4audio_channels); i++)
+            if (ff_mpeg4audio_channels[i] == avctx->channels)
+                break;
+        if (i == FF_ARRAY_ELEMS(ff_mpeg4audio_channels)) {
+            i = 0;
+        }
+        ac->m4ac.chan_config = i;
+
+        if (ac->m4ac.chan_config) {
+            set_default_channel_config(avctx, new_che_pos, ac->m4ac.chan_config);
+            output_configure(ac, ac->che_pos, new_che_pos, ac->m4ac.chan_config, OC_GLOBAL_HDR);
+        }
     }
 
     if (avctx->request_sample_fmt == AV_SAMPLE_FMT_FLT) {
@@ -2049,6 +2088,7 @@ static int parse_adts_frame_header(AACContext *ac, GetBitContext *gb)
             if (output_configure(ac, ac->che_pos, new_che_pos, hdr_info.chan_config, OC_TRIAL_FRAME))
                 return -7;
         } else if (ac->output_configured != OC_LOCKED) {
+            ac->m4ac.chan_config = 0;
             ac->output_configured = OC_NONE;
         }
         if (ac->output_configured != OC_LOCKED) {
@@ -2516,6 +2556,7 @@ AVCodec ff_aac_decoder = {
     .sample_fmts = (const enum AVSampleFormat[]) {
         AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
     },
+    .capabilities = CODEC_CAP_CHANNEL_CONF,
     .channel_layouts = aac_channel_layout,
 };
 
@@ -2536,5 +2577,6 @@ AVCodec ff_aac_latm_decoder = {
     .sample_fmts = (const enum AVSampleFormat[]) {
         AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE
     },
+    .capabilities = CODEC_CAP_CHANNEL_CONF,
     .channel_layouts = aac_channel_layout,
 };
diff --git a/libavcodec/aacenc.h b/libavcodec/aacenc.h
index 1e27ddc40d..150c651665 100644
--- a/libavcodec/aacenc.h
+++ b/libavcodec/aacenc.h
@@ -61,7 +61,7 @@ typedef struct AACEncContext {
     int16_t *samples;                            ///< saved preprocessed input
 
     int samplerate_index;                        ///< MPEG-4 samplerate index
-    uint8_t *chan_map;                           ///< channel configuration map
+    const uint8_t *chan_map;                     ///< channel configuration map
 
     ChannelElement *cpe;                         ///< channel elements
     FFPsyContext psy;
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 2345b7e526..4cd928dc83 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -1410,7 +1410,7 @@ typedef struct AVCodecContext {
      * A demuxer should set this to what is stored in the field used to identify the codec.
      * If there are multiple such fields in a container then the demuxer should choose the one
      * which maximizes the information about the used codec.
-     * If the codec tag field in a container is larger then 32 bits then the demuxer should
+     * If the codec tag field in a container is larger than 32 bits then the demuxer should
      * remap the longer ID to 32 bits with a table or other structure. Alternatively a new
      * extra_codec_tag + size could be added but for this a clear advantage must be demonstrated
      * first.
diff --git a/libavcodec/dca.c b/libavcodec/dca.c
index 4b445bc743..b56005b7cf 100644
--- a/libavcodec/dca.c
+++ b/libavcodec/dca.c
@@ -1316,7 +1316,7 @@ static int dca_convert_bitstream(const uint8_t * src, int src_size, uint8_t * ds
     PutBitContext pb;
 
     if ((unsigned)src_size > (unsigned)max_size) {
-//        av_log(NULL, AV_LOG_ERROR, "Input frame size larger then DCA_MAX_FRAME_SIZE!\n");
+//        av_log(NULL, AV_LOG_ERROR, "Input frame size larger than DCA_MAX_FRAME_SIZE!\n");
 //        return -1;
         src_size = max_size;
     }
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index 0143ed7d3c..f2054a4cf0 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -150,7 +150,7 @@ void clear_blocks_c(DCTELEM *blocks);
 
 /* add and put pixel (decoding) */
 // blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
-//h for op_pixels_func is limited to {width/2, width} but never larger than 16 and never smaller then 4
+//h for op_pixels_func is limited to {width/2, width} but never larger than 16 and never smaller than 4
 typedef void (*op_pixels_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int h);
 typedef void (*tpel_mc_func)(uint8_t *block/*align width (8 or 16)*/, const uint8_t *pixels/*align 1*/, int line_size, int w, int h);
 typedef void (*qpel_mc_func)(uint8_t *dst/*align width (8 or 16)*/, uint8_t *src/*align 1*/, int stride);
@@ -183,7 +183,7 @@ static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
 }
 
 /* motion estimation */
-// h is limited to {width/2, width, 2*width} but never larger than 16 and never smaller then 2
+// h is limited to {width/2, width, 2*width} but never larger than 16 and never smaller than 2
 // although currently h<4 is not used as functions with width <8 are neither used nor implemented
 typedef int (*me_cmp_func)(void /*MpegEncContext*/ *s, uint8_t *blk1/*align width (8 or 16)*/, uint8_t *blk2/*align 1*/, int line_size, int h)/* __attribute__ ((const))*/;
 
diff --git a/libavcodec/get_bits.h b/libavcodec/get_bits.h
index 8579c87cd1..3b09dfd285 100644
--- a/libavcodec/get_bits.h
+++ b/libavcodec/get_bits.h
@@ -381,7 +381,7 @@ static inline int check_marker(GetBitContext *s, const char *msg)
 
 /**
  * init GetBitContext.
- * @param buffer bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE bytes larger then the actual read bits
+ * @param buffer bitstream buffer, must be FF_INPUT_BUFFER_PADDING_SIZE bytes larger than the actual read bits
  * because some optimized bitstream readers read 32 or 64 bit at once and could read over the end
  * @param bit_size the size of the buffer in bits
  *
@@ -504,7 +504,7 @@ void free_vlc(VLC *vlc);
 
 
 /**
- * parses a vlc code, faster then get_vlc()
+ * parses a vlc code, faster than get_vlc()
  * @param bits is the number of bits which will be read at once, must be
  *             identical to nb_bits in init_vlc()
  * @param max_depth is the number of times bits bits must be read to completely
diff --git a/libavcodec/mpegvideo_enc.c b/libavcodec/mpegvideo_enc.c
index a6e9c7c7be..bb7fdc735f 100644
--- a/libavcodec/mpegvideo_enc.c
+++ b/libavcodec/mpegvideo_enc.c
@@ -1787,7 +1787,7 @@ static av_always_inline void encode_mb(MpegEncContext *s, int motion_x, int moti
 static inline void copy_context_before_encode(MpegEncContext *d, MpegEncContext *s, int type){
     int i;
 
-    memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
+    memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster than a loop?
 
     /* mpeg1 */
     d->mb_skip_run= s->mb_skip_run;
@@ -1816,7 +1816,7 @@ static inline void copy_context_after_encode(MpegEncContext *d, MpegEncContext *
     int i;
 
     memcpy(d->mv, s->mv, 2*4*2*sizeof(int));
-    memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster then a loop?
+    memcpy(d->last_mv, s->last_mv, 2*2*2*sizeof(int)); //FIXME is memcpy faster than a loop?
 
     /* mpeg1 */
     d->mb_skip_run= s->mb_skip_run;
diff --git a/libavcodec/pgssubdec.c b/libavcodec/pgssubdec.c
index 315dbbd779..96b400b2bb 100644
--- a/libavcodec/pgssubdec.c
+++ b/libavcodec/pgssubdec.c
@@ -198,7 +198,7 @@ static int parse_picture_segment(AVCodecContext *avctx,
 
     /* Make sure the bitmap is not too large */
     if (avctx->width < width || avctx->height < height) {
-        av_log(avctx, AV_LOG_ERROR, "Bitmap dimensions larger then video.\n");
+        av_log(avctx, AV_LOG_ERROR, "Bitmap dimensions larger than video.\n");
         return -1;
     }