#include "avcodec.h"
+typedef struct RawVideoContext {
+ unsigned char * buffer; /* block of memory for holding one frame */
+ unsigned char * p; /* current position in buffer */
+ int length; /* number of bytes in buffer */
+ AVFrame pic; ///< AVCodecContext.coded_frame
+} RawVideoContext;
typedef struct PixleFormatTag {
int pix_fmt;
} PixelFormatTag;
const PixelFormatTag pixelFormatTags[] = {
- { PIX_FMT_YUV422, MKTAG('Y', '4', '2', '2') },
+ { PIX_FMT_YUV420P, MKTAG('I', '4', '2', '0') }, /* Planar formats */
+ { PIX_FMT_YUV420P, MKTAG('I', 'Y', 'U', 'V') },
+ { PIX_FMT_YUV410P, MKTAG('Y', 'U', 'V', '9') },
+ { PIX_FMT_YUV411P, MKTAG('Y', '4', '1', 'B') },
+ { PIX_FMT_YUV422P, MKTAG('Y', '4', '2', 'B') },
+ { PIX_FMT_GRAY8, MKTAG('Y', '8', '0', '0') },
+ { PIX_FMT_GRAY8, MKTAG(' ', ' ', 'Y', '8') },
+
+
+ { PIX_FMT_YUV422, MKTAG('Y', '4', '2', '2') }, /* Packed formats */
+ { PIX_FMT_YUV422, MKTAG('U', 'Y', 'V', 'Y') },
+ { PIX_FMT_GRAY8, MKTAG('G', 'R', 'E', 'Y') },
+
{ -1, 0 },
};
return PIX_FMT_YUV420P;
}
+static unsigned int findFourCC(int fmt)
+{
+ const PixelFormatTag * tags = pixelFormatTags;
+ while (tags->pix_fmt >= 0) {
+ if (tags->pix_fmt == fmt)
+ return tags->fourcc;
+ tags++;
+ }
+ return 0;
+}
-typedef struct RawVideoContext {
- unsigned char * buffer; /* block of memory for holding one frame */
- unsigned char * p; /* current position in buffer */
- int length; /* number of bytes in buffer */
-} RawVideoContext;
-
+/* RAW Decoder Implementation */
-static int raw_init(AVCodecContext *avctx)
+static int raw_init_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
- if (avctx->codec_tag) {
- avctx->pix_fmt = findPixelFormat(avctx->codec_tag);
- }
-
- context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
- context->buffer = av_malloc(context->length);
- context->p = context->buffer;
-
- if (! context->buffer) {
+ if (avctx->codec_tag)
+ avctx->pix_fmt = findPixelFormat(avctx->codec_tag);
+
+ context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
+ context->buffer = av_malloc(context->length);
+ context->p = context->buffer;
+ context->pic.pict_type = FF_I_TYPE;
+ context->pic.key_frame = 1;
+
+ avctx->coded_frame= &context->pic;
+
+ if (!context->buffer)
return -1;
- }
-
+
return 0;
}
uint8_t *buf, int buf_size)
{
RawVideoContext *context = avctx->priv_data;
+ int bytesNeeded;
AVPicture * picture = (AVPicture *) data;
return buf_size;
}
- int bytesNeeded = context->length - (context->p - context->buffer);
+ bytesNeeded = context->length - (context->p - context->buffer);
if (buf_size < bytesNeeded) {
memcpy(context->p, buf, buf_size);
context->p += buf_size;
- *data_size = 0;
return buf_size;
}
return bytesNeeded;
}
-static int raw_close(AVCodecContext *avctx)
+static int raw_close_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
+
+ av_freep(&context->buffer);
+ return 0;
+}
- av_freep(& context->buffer);
+/* RAW Encoder Implementation */
+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;
+ avctx->codec_tag = findFourCC(avctx->pix_fmt);
return 0;
}
static int raw_encode(AVCodecContext *avctx,
unsigned char *frame, int buf_size, void *data)
{
- AVPicture * picture = data;
-
- unsigned char *src;
- unsigned char *dest = frame;
- int i, j;
-
- int w = avctx->width;
- int h = avctx->height;
- int size = avpicture_get_size(avctx->pix_fmt, w, h);
-
- if (size > buf_size) {
- return -1;
- }
-
- switch(avctx->pix_fmt) {
- case PIX_FMT_YUV420P:
- for(i=0;i<3;i++) {
- if (i == 1) {
- w >>= 1;
- h >>= 1;
- }
- src = picture->data[i];
- for(j=0;j<h;j++) {
- memcpy(dest, src, w);
- dest += w;
- src += picture->linesize[i];
- }
- }
- break;
- case PIX_FMT_YUV422P:
- for(i=0;i<3;i++) {
- if (i == 1) {
- w >>= 1;
- }
- src = picture->data[i];
- for(j=0;j<h;j++) {
- memcpy(dest, src, w);
- dest += w;
- src += picture->linesize[i];
- }
- }
- break;
- case PIX_FMT_YUV444P:
- for(i=0;i<3;i++) {
- src = picture->data[i];
- for(j=0;j<h;j++) {
- memcpy(dest, src, w);
- dest += w;
- src += picture->linesize[i];
- }
- }
- break;
- case PIX_FMT_YUV422:
- src = picture->data[0];
- for(j=0;j<h;j++) {
- memcpy(dest, src, w * 2);
- dest += w * 2;
- src += picture->linesize[0];
- }
- break;
- case PIX_FMT_RGB24:
- case PIX_FMT_BGR24:
- src = picture->data[0];
- for(j=0;j<h;j++) {
- memcpy(dest, src, w * 3);
- dest += w * 3;
- src += picture->linesize[0];
- }
- break;
- default:
- return -1;
- }
-
- return size;
+ 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,
+};
-AVCodec rawvideo_codec = {
+AVCodec rawvideo_decoder = {
"rawvideo",
CODEC_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
sizeof(RawVideoContext),
- raw_init,
- raw_encode,
- raw_close,
+ raw_init_decoder,
+ NULL,
+ raw_close_decoder,
raw_decode,
};
projects / ffmpeg / blobdiff