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split rawvideo encoder and decoder in their own files

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Originally committed as revision 9560 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs
2007-07-09 16:26:11 +00:00
parent 0d336e44db
commit 3a763f0f0b
5 changed files with 249 additions and 163 deletions
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166
libavcodec/raw.c
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@ -25,19 +25,9 @@
*/
#include "avcodec.h"
#include "raw.h"
typedef struct RawVideoContext {
unsigned char * buffer; /* block of memory for holding one frame */
int length; /* number of bytes in buffer */
AVFrame pic; ///< AVCodecContext.coded_frame
} RawVideoContext;
typedef struct PixelFormatTag {
int pix_fmt;
unsigned int fourcc;
} PixelFormatTag;
static const PixelFormatTag pixelFormatTags[] = {
const PixelFormatTag ff_raw_pixelFormatTags[] = {
{ PIX_FMT_YUV420P, MKTAG('I', '4', '2', '0') }, /* Planar formats */
{ PIX_FMT_YUV420P, MKTAG('I', 'Y', 'U', 'V') },
{ PIX_FMT_YUV420P, MKTAG('Y', 'V', '1', '2') },
@ -64,38 +54,9 @@ static const PixelFormatTag pixelFormatTags[] = {
{ -1, 0 },
};
static const PixelFormatTag pixelFormatBpsAVI[] = {
{ PIX_FMT_PAL8, 8 },
{ PIX_FMT_RGB555, 15 },
{ PIX_FMT_RGB555, 16 },
{ PIX_FMT_BGR24, 24 },
{ PIX_FMT_RGB32, 32 },
{ -1, 0 },
};
static const PixelFormatTag pixelFormatBpsMOV[] = {
/* FIXME fix swscaler to support those */
/* http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/chapter_4_section_2.html */
{ PIX_FMT_PAL8, 8 },
{ PIX_FMT_BGR555, 16 },
{ PIX_FMT_RGB24, 24 },
{ PIX_FMT_BGR32_1, 32 },
{ -1, 0 },
};
static int findPixelFormat(const PixelFormatTag *tags, unsigned int fourcc)
{
while (tags->pix_fmt >= 0) {
if (tags->fourcc == fourcc)
return tags->pix_fmt;
tags++;
}
return PIX_FMT_YUV420P;
}
unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat fmt)
{
const PixelFormatTag * tags = pixelFormatTags;
const PixelFormatTag * tags = ff_raw_pixelFormatTags;
while (tags->pix_fmt >= 0) {
if (tags->pix_fmt == fmt)
return tags->fourcc;
@ -103,124 +64,3 @@ unsigned int avcodec_pix_fmt_to_codec_tag(enum PixelFormat fmt)
}
return 0;
}
/* RAW Decoder Implementation */
static int raw_init_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
if (avctx->codec_tag == MKTAG('r','a','w',' '))
avctx->pix_fmt = findPixelFormat(pixelFormatBpsMOV, avctx->bits_per_sample);
else if (avctx->codec_tag)
avctx->pix_fmt = findPixelFormat(pixelFormatTags, avctx->codec_tag);
else if (avctx->bits_per_sample)
avctx->pix_fmt = findPixelFormat(pixelFormatBpsAVI, avctx->bits_per_sample);
context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
context->buffer = av_malloc(context->length);
context->pic.pict_type = FF_I_TYPE;
context->pic.key_frame = 1;
avctx->coded_frame= &context->pic;
if (!context->buffer)
return -1;
return 0;
}
static void flip(AVCodecContext *avctx, AVPicture * picture){
if(!avctx->codec_tag && avctx->bits_per_sample && picture->linesize[2]==0){
picture->data[0] += picture->linesize[0] * (avctx->height-1);
picture->linesize[0] *= -1;
}
}
static int raw_decode(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
RawVideoContext *context = avctx->priv_data;
AVFrame * frame = (AVFrame *) data;
AVPicture * picture = (AVPicture *) data;
frame->interlaced_frame = avctx->coded_frame->interlaced_frame;
frame->top_field_first = avctx->coded_frame->top_field_first;
if(buf_size < context->length - (avctx->pix_fmt==PIX_FMT_PAL8 ? 256*4 : 0))
return -1;
avpicture_fill(picture, buf, avctx->pix_fmt, avctx->width, avctx->height);
if(avctx->pix_fmt==PIX_FMT_PAL8 && buf_size < context->length){
frame->data[1]= context->buffer;
}
if (avctx->palctrl && avctx->palctrl->palette_changed) {
memcpy(frame->data[1], avctx->palctrl->palette, AVPALETTE_SIZE);
avctx->palctrl->palette_changed = 0;
}
flip(avctx, picture);
if (avctx->codec_tag == MKTAG('Y', 'V', '1', '2'))
{
// swap fields
unsigned char *tmp = picture->data[1];
picture->data[1] = picture->data[2];
picture->data[2] = tmp;
}
*data_size = sizeof(AVPicture);
return buf_size;
}
static int raw_close_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
av_freep(&context->buffer);
return 0;
}
/* RAW Encoder Implementation */
#ifdef CONFIG_RAWVIDEO_ENCODER
static int raw_init_encoder(AVCodecContext *avctx)
{
avctx->coded_frame = (AVFrame *)avctx->priv_data;
avctx->coded_frame->pict_type = FF_I_TYPE;
avctx->coded_frame->key_frame = 1;
if(!avctx->codec_tag)
avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
return 0;
}
static int raw_encode(AVCodecContext *avctx,
unsigned char *frame, int buf_size, void *data)
{
return avpicture_layout((AVPicture *)data, avctx->pix_fmt, avctx->width,
avctx->height, frame, buf_size);
}
AVCodec rawvideo_encoder = {
"rawvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
sizeof(AVFrame),
raw_init_encoder,
raw_encode,
};
#endif // CONFIG_RAWVIDEO_ENCODER
#ifdef CONFIG_RAWVIDEO_DECODER
AVCodec rawvideo_decoder = {
"rawvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
sizeof(RawVideoContext),
raw_init_decoder,
NULL,
raw_close_decoder,
raw_decode,
};
#endif // CONFIG_RAWVIDEO_DECODER