cosmetics: Add some whitespace for better readability.

[ffmpeg] / libavcodec / utils.c

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 5f10ffbe869901e9b3bef1999fb041864e08cba5..9ca8a2d38ea10dc9c54faffa74f8e4a3e62051b3 100644 (file)
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -753,6 +753,7 @@ static const AVOption options[]={
 {"timecode_frame_start", "GOP timecode frame start number, in non drop frame format", OFFSET(timecode_frame_start), FF_OPT_TYPE_INT, 0, 0, INT_MAX, V|E},
 {"drop_frame_timecode", NULL, 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_DROP_FRAME_TIMECODE, INT_MIN, INT_MAX, V|E, "flags2"},
 {"non_linear_q", "use non linear quantizer", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_NON_LINEAR_QUANT, INT_MIN, INT_MAX, V|E, "flags2"},
+{"request_channels", "set desired number of audio channels", OFFSET(request_channels), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, A|D},
 {NULL},
 };
 
@@ -829,7 +830,7 @@ AVFrame *avcodec_alloc_frame(void){
     return pic;
 }
 
-int avcodec_open(AVCodecContext *avctx, AVCodec *codec)
+int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)
 {
     int ret= -1;
 
@@ -880,7 +881,7 @@ end:
     return ret;
 }
 
-int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
+int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
                          const short *samples)
 {
     if(buf_size < FF_MIN_BUFFER_SIZE && 0){
@@ -895,7 +896,7 @@ int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
         return 0;
 }
 
-int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
+int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
                          const AVFrame *pict)
 {
     if(buf_size < FF_MIN_BUFFER_SIZE){
@@ -923,7 +924,7 @@ int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
     return ret;
 }
 
-int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
+int attribute_align_arg avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
                          int *got_picture_ptr,
                          uint8_t *buf, int buf_size)
 {
@@ -946,7 +947,7 @@ int avcodec_decode_video(AVCodecContext *avctx, AVFrame *picture,
     return ret;
 }
 
-int avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
+int attribute_align_arg avcodec_decode_audio2(AVCodecContext *avctx, int16_t *samples,
                          int *frame_size_ptr,
                          uint8_t *buf, int buf_size)
 {
@@ -1235,9 +1236,9 @@ static void init_crcs(void){
     av_crc8005    = av_mallocz_static(sizeof(AVCRC) * 257);
     av_crc07      = av_mallocz_static(sizeof(AVCRC) * 257);
 #endif
-    av_crc_init(av_crc04C11DB7, 0, 32, 0x04c11db7, sizeof(AVCRC)*257);
-    av_crc_init(av_crc8005    , 0, 16, 0x8005    , sizeof(AVCRC)*257);
-    av_crc_init(av_crc07      , 0,  8, 0x07      , sizeof(AVCRC)*257);
+    av_crc_init(av_crc04C11DB7, 0, 32, AV_CRC_32_IEEE, sizeof(AVCRC)*257);
+    av_crc_init(av_crc8005    , 0, 16, AV_CRC_16     , sizeof(AVCRC)*257);
+    av_crc_init(av_crc07      , 0,  8, AV_CRC_8_ATM  , sizeof(AVCRC)*257);
 }
 
 void avcodec_init(void)
@@ -1322,6 +1323,22 @@ int av_get_bits_per_sample(enum CodecID codec_id){
     }
 }
 
+int av_get_bits_per_sample_format(enum SampleFormat sample_fmt) {
+    switch (sample_fmt) {
+    case SAMPLE_FMT_U8:
+        return 8;
+    case SAMPLE_FMT_S16:
+        return 16;
+    case SAMPLE_FMT_S24:
+        return 24;
+    case SAMPLE_FMT_S32:
+    case SAMPLE_FMT_FLT:
+        return 32;
+    default:
+        return 0;
+    }
+}
+
 #if !defined(HAVE_THREADS)
 int avcodec_thread_init(AVCodecContext *s, int thread_count){
     return -1;