int video_scaler_create(video_scaler_t **scaler_out,
const struct video_scale_info *dst,
const struct video_scale_info *src,
enum video_scale_type type)
{
enum AVPixelFormat format_src = get_ffmpeg_video_format(src->format);
enum AVPixelFormat format_dst = get_ffmpeg_video_format(dst->format);
int scale_type = get_ffmpeg_scale_type(type);
const int *coeff_src = get_ffmpeg_coeffs(src->colorspace);
const int *coeff_dst = get_ffmpeg_coeffs(dst->colorspace);
int range_src = get_ffmpeg_range_type(src->range);
int range_dst = get_ffmpeg_range_type(dst->range);
struct video_scaler *scaler;
int ret;
if (!scaler_out)
return VIDEO_SCALER_FAILED;
if (format_src == AV_PIX_FMT_NONE ||
format_dst == AV_PIX_FMT_NONE)
return VIDEO_SCALER_BAD_CONVERSION;
scaler = bzalloc(sizeof(struct video_scaler));
scaler->src_height = src->height;
scaler->swscale = sws_getCachedContext(NULL,
src->width, src->height, format_src,
dst->width, dst->height, format_dst,
scale_type, NULL, NULL, NULL);
if (!scaler->swscale) {
blog(LOG_ERROR, "video_scaler_create: Could not create "
"swscale");
goto fail;
}
ret = sws_setColorspaceDetails(scaler->swscale,
coeff_src, range_src,
coeff_dst, range_dst,
0, FIXED_1_0, FIXED_1_0);
if (ret < 0) {
blog(LOG_DEBUG, "video_scaler_create: "
"sws_setColorspaceDetails failed, ignoring");
}
*scaler_out = scaler;
return VIDEO_SCALER_SUCCESS;
fail:
video_scaler_destroy(scaler);
return VIDEO_SCALER_FAILED;
}
static inline void video_input_free(struct video_input *input)
{
for (size_t i = 0; i < MAX_CONVERT_BUFFERS; i++)
video_frame_free(&input->frame[i]);
video_scaler_destroy(input->scaler);
}
