/*
* utils for libavcodec
* Copyright (c) 2001 Fabrice Bellard.
+ * Copyright (c) 2003 Michel Bardiaux for the av_log API
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
#include "avcodec.h"
#include "dsputil.h"
#include "mpegvideo.h"
+#include "integer.h"
+#include <stdarg.h>
+#include <limits.h>
+
+static void avcodec_default_free_buffers(AVCodecContext *s);
void *av_mallocz(unsigned int size)
{
if(min_size < *size)
return ptr;
- *size= min_size + 10*1024;
+ *size= 17*min_size/16 + 32;
return av_realloc(ptr, *size);
}
-/* allocation of static arrays - do not use for normal allocation */
static unsigned int last_static = 0;
-static char*** array_static = NULL;
-static const unsigned int grow_static = 64; // ^2
-void *__av_mallocz_static(void** location, unsigned int size)
+static unsigned int allocated_static = 0;
+static void** array_static = NULL;
+
+/**
+ * allocation of static arrays - do not use for normal allocation.
+ */
+void *av_mallocz_static(unsigned int size)
{
- unsigned int l = (last_static + grow_static) & ~(grow_static - 1);
void *ptr = av_mallocz(size);
- if (!ptr)
- return NULL;
-
- if (location)
- {
- if (l > last_static)
- array_static = av_realloc(array_static, l);
- array_static[last_static++] = (char**) location;
- *location = ptr;
+
+ if(ptr){
+ array_static =av_fast_realloc(array_static, &allocated_static, sizeof(void*)*(last_static+1));
+ array_static[last_static++] = ptr;
}
+
return ptr;
}
-/* free all static arrays and reset pointers to 0 */
+
+/**
+ * free all static arrays and reset pointers to 0.
+ */
void av_free_static(void)
{
- if (array_static)
- {
- unsigned i;
- for (i = 0; i < last_static; i++)
- {
- av_free(*array_static[i]);
- *array_static[i] = NULL;
- }
- av_free(array_static);
- array_static = 0;
+ while(last_static){
+ av_freep(&array_static[--last_static]);
}
- last_static = 0;
+ av_freep(&array_static);
}
-/* cannot call it directly because of 'void **' casting is not automatic */
-void __av_freep(void **ptr)
+/**
+ * Frees memory and sets the pointer to NULL.
+ * @param arg pointer to the pointer which should be freed
+ */
+void av_freep(void *arg)
{
+ void **ptr= (void**)arg;
av_free(*ptr);
*ptr = NULL;
}
switch(s->pix_fmt){
case PIX_FMT_YUV420P:
case PIX_FMT_YUV422:
+ case PIX_FMT_UYVY422:
case PIX_FMT_YUV422P:
case PIX_FMT_YUV444P:
case PIX_FMT_GRAY8:
w_align=64;
h_align=64;
}
+ case PIX_FMT_RGB555:
+ if(s->codec_id == CODEC_ID_RPZA){
+ w_align=4;
+ h_align=4;
+ }
+ case PIX_FMT_PAL8:
+ if(s->codec_id == CODEC_ID_SMC){
+ w_align=4;
+ h_align=4;
+ }
break;
default:
w_align= 1;
case PIX_FMT_RGB555:
case PIX_FMT_RGB565:
case PIX_FMT_YUV422:
+ case PIX_FMT_UYVY422:
pixel_size=2;
break;
case PIX_FMT_RGB24:
const int h_shift= i==0 ? 0 : h_chroma_shift;
const int v_shift= i==0 ? 0 : v_chroma_shift;
- buf->linesize[i]= ALIGN(pixel_size*w>>h_shift, s_align);
+ //FIXME next ensures that linesize= 2^x uvlinesize, thats needed because some MC code assumes it
+ buf->linesize[i]= ALIGN(pixel_size*w>>h_shift, s_align<<(h_chroma_shift-h_shift));
buf->base[i]= av_mallocz((buf->linesize[i]*h>>v_shift)+16); //FIXME 16
if(buf->base[i]==NULL) return -1;
//printf("R%X\n", pic->opaque);
}
-enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, enum PixelFormat * fmt){
+int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic){
+ AVFrame temp_pic;
+ int i;
+
+ /* If no picture return a new buffer */
+ if(pic->data[0] == NULL) {
+ /* We will copy from buffer, so must be readable */
+ pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
+ return s->get_buffer(s, pic);
+ }
+
+ /* If internal buffer type return the same buffer */
+ if(pic->type == FF_BUFFER_TYPE_INTERNAL)
+ return 0;
+
+ /*
+ * Not internal type and reget_buffer not overridden, emulate cr buffer
+ */
+ temp_pic = *pic;
+ for(i = 0; i < 4; i++)
+ pic->data[i] = pic->base[i] = NULL;
+ pic->opaque = NULL;
+ /* Allocate new frame */
+ if (s->get_buffer(s, pic))
+ return -1;
+ /* Copy image data from old buffer to new buffer */
+ img_copy((AVPicture*)pic, (AVPicture*)&temp_pic, s->pix_fmt, s->width,
+ s->height);
+ s->release_buffer(s, &temp_pic); // Release old frame
+ return 0;
+}
+
+int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2),void **arg, int *ret, int count){
+ int i;
+
+ for(i=0; i<count; i++){
+ int r= func(c, arg[i]);
+ if(ret) ret[i]= r;
+ }
+ return 0;
+}
+
+enum PixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum PixelFormat * fmt){
return fmt[0];
}
+static const char* context_to_name(void* ptr) {
+ AVCodecContext *avc= ptr;
+
+ if(avc && avc->codec && avc->codec->name)
+ return avc->codec->name;
+ else
+ return "NULL";
+}
+
+static AVClass av_codec_context_class = { "AVCodecContext", context_to_name };
+
void avcodec_get_context_defaults(AVCodecContext *s){
+ memset(s, 0, sizeof(AVCodecContext));
+
+ s->av_class= &av_codec_context_class;
s->bit_rate= 800*1000;
s->bit_rate_tolerance= s->bit_rate*10;
s->qmin= 2;
s->get_buffer= avcodec_default_get_buffer;
s->release_buffer= avcodec_default_release_buffer;
s->get_format= avcodec_default_get_format;
+ s->execute= avcodec_default_execute;
+ s->thread_count=1;
s->me_subpel_quality=8;
s->lmin= FF_QP2LAMBDA * s->qmin;
s->lmax= FF_QP2LAMBDA * s->qmax;
s->sample_aspect_ratio= (AVRational){0,1};
+ s->ildct_cmp= FF_CMP_VSAD;
s->intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
s->inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
s->palctrl = NULL;
+ s->reget_buffer= avcodec_default_reget_buffer;
}
/**
* this can be deallocated by simply calling free()
*/
AVCodecContext *avcodec_alloc_context(void){
- AVCodecContext *avctx= av_mallocz(sizeof(AVCodecContext));
+ AVCodecContext *avctx= av_malloc(sizeof(AVCodecContext));
if(avctx==NULL) return NULL;
return avctx;
}
+void avcodec_get_frame_defaults(AVFrame *pic){
+ memset(pic, 0, sizeof(AVFrame));
+
+ pic->pts= AV_NOPTS_VALUE;
+}
+
/**
* allocates a AVPFrame and set it to defaults.
* this can be deallocated by simply calling free()
*/
AVFrame *avcodec_alloc_frame(void){
- AVFrame *pic= av_mallocz(sizeof(AVFrame));
+ AVFrame *pic= av_malloc(sizeof(AVFrame));
+
+ if(pic==NULL) return NULL;
+
+ avcodec_get_frame_defaults(pic);
return pic;
}
int avcodec_encode_audio(AVCodecContext *avctx, uint8_t *buf, int buf_size,
const short *samples)
{
- int ret;
-
- ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
- avctx->frame_number++;
- return ret;
+ if((avctx->codec->capabilities & CODEC_CAP_DELAY) || samples){
+ int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)samples);
+ avctx->frame_number++;
+ return ret;
+ }else
+ return 0;
}
int avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
const AVFrame *pict)
{
- int ret;
-
- ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
+ if((avctx->codec->capabilities & CODEC_CAP_DELAY) || pict){
+ int ret = avctx->codec->encode(avctx, buf, buf_size, (void *)pict);
+ avctx->frame_number++;
+ emms_c(); //needed to avoid a emms_c() call before every return;
- emms_c(); //needed to avoid a emms_c() call before every return;
-
- avctx->frame_number++;
- return ret;
+ return ret;
+ }else
+ return 0;
}
/**
{
int ret;
+ *got_picture_ptr= 0;
ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
buf, buf_size);
{
int ret;
+ *frame_size_ptr= 0;
ret = avctx->codec->decode(avctx, samples, frame_size_ptr,
buf, buf_size);
avctx->frame_number++;
{
if (avctx->codec->close)
avctx->codec->close(avctx);
+ avcodec_default_free_buffers(avctx);
av_freep(&avctx->priv_data);
avctx->codec = NULL;
return 0;
return NULL;
}
-AVCodec *avcodec_find(enum CodecID id)
+static AVCodec *avcodec_find(enum CodecID id)
{
AVCodec *p;
p = first_avcodec;
avctx->codec->flush(avctx);
}
-void avcodec_default_free_buffers(AVCodecContext *s){
+static void avcodec_default_free_buffers(AVCodecContext *s){
int i, j;
if(s->internal_buffer==NULL) return;
}
int av_reduce(int *dst_nom, int *dst_den, int64_t nom, int64_t den, int64_t max){
- int exact=1, sign=0;
- int64_t gcd;
-
- assert(den != 0);
-
- if(den < 0){
- den= -den;
- nom= -nom;
+ AVRational a0={0,1}, a1={1,0};
+ int sign= (nom<0) ^ (den<0);
+ int64_t gcd= ff_gcd(ABS(nom), ABS(den));
+
+ nom = ABS(nom)/gcd;
+ den = ABS(den)/gcd;
+ if(nom<=max && den<=max){
+ a1= (AVRational){nom, den};
+ den=0;
}
- if(nom < 0){
- nom= -nom;
- sign= 1;
+ while(den){
+ int64_t x = nom / den;
+ int64_t next_den= nom - den*x;
+ int64_t a2n= x*a1.num + a0.num;
+ int64_t a2d= x*a1.den + a0.den;
+
+ if(a2n > max || a2d > max) break;
+
+ a0= a1;
+ a1= (AVRational){a2n, a2d};
+ nom= den;
+ den= next_den;
}
+ assert(ff_gcd(a1.num, a1.den) == 1);
- gcd = ff_gcd(nom, den);
- nom /= gcd;
- den /= gcd;
+ *dst_nom = sign ? -a1.num : a1.num;
+ *dst_den = a1.den;
- if(nom > max || den > max){
- AVRational a0={0,1}, a1={1,0};
- exact=0;
-
- for(;;){
- int64_t x= nom / den;
- int64_t a2n= x*a1.num + a0.num;
- int64_t a2d= x*a1.den + a0.den;
-
- if(a2n > max || a2d > max) break;
-
- nom %= den;
-
- a0= a1;
- a1= (AVRational){a2n, a2d};
- if(nom==0) break;
- x= nom; nom=den; den=x;
- }
- nom= a1.num;
- den= a1.den;
- }
-
- assert(ff_gcd(nom, den) == 1);
-
- if(sign) nom= -nom;
-
- *dst_nom = nom;
- *dst_den = den;
-
- return exact;
+ return den==0;
}
-int64_t av_rescale(int64_t a, int b, int c){
- uint64_t h, l;
+int64_t av_rescale(int64_t a, int64_t b, int64_t c){
+ AVInteger ai, ci;
assert(c > 0);
assert(b >=0);
if(a<0) return -av_rescale(-a, b, c);
- h= a>>32;
- if(h==0) return a*b/c;
+ if(b<=INT_MAX && c<=INT_MAX){
+ if(a<=INT_MAX)
+ return (a * b + c/2)/c;
+ else
+ return a/c*b + (a%c*b + c/2)/c;
+ }
+
+ ai= av_mul_i(av_int2i(a), av_int2i(b));
+ ci= av_int2i(c);
+ ai= av_add_i(ai, av_shr_i(ci,1));
- l= a&0xFFFFFFFF;
- l *= b;
- h *= b;
+ return av_i2int(av_div_i(ai, ci));
+}
+
+/* av_log API */
+
+static int av_log_level = AV_LOG_DEBUG;
- l += (h%c)<<32;
+static void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)
+{
+ static int print_prefix=1;
+ AVClass* avc= ptr ? *(AVClass**)ptr : NULL;
+ if(level>av_log_level)
+ return;
+#undef fprintf
+ if(print_prefix && avc) {
+ fprintf(stderr, "[%s @ %p]", avc->item_name(ptr), avc);
+ }
+#define fprintf please_use_av_log
+
+ print_prefix= strstr(fmt, "\n") != NULL;
+
+ vfprintf(stderr, fmt, vl);
+}
- return ((h/c)<<32) + l/c;
+static void (*av_log_callback)(void*, int, const char*, va_list) = av_log_default_callback;
+
+void av_log(void* avcl, int level, const char *fmt, ...)
+{
+ va_list vl;
+ va_start(vl, fmt);
+ av_vlog(avcl, level, fmt, vl);
+ va_end(vl);
+}
+
+void av_vlog(void* avcl, int level, const char *fmt, va_list vl)
+{
+ av_log_callback(avcl, level, fmt, vl);
}
+
+int av_log_get_level(void)
+{
+ return av_log_level;
+}
+
+void av_log_set_level(int level)
+{
+ av_log_level = level;
+}
+
+void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))
+{
+ av_log_callback = callback;
+}
+
+#if !defined(HAVE_PTHREADS) && !defined(HAVE_W32THREADS)
+int avcodec_thread_init(AVCodecContext *s, int thread_count){
+ return -1;
+}
+#endif
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