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vp8enc: minor optimization in setting up image buffer

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This commit is contained in:
Mark Nauwelaerts 2011-03-24 13:59:35 +01:00
parent 1cd8e12c19
commit b7ae60f617
2 changed files with 39 additions and 23 deletions
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60
ext/vp8/gstvp8enc.c
View file

@ -477,6 +477,8 @@ gst_vp8_enc_set_format (GstBaseVideoEncoder * base_video_encoder,
GstVP8Enc *encoder;
vpx_codec_enc_cfg_t cfg;
vpx_codec_err_t status;
vpx_image_t *image;
guint8 *data = NULL;
encoder = GST_VP8_ENC (base_video_encoder);
GST_DEBUG_OBJECT (base_video_encoder, "set_format");
@ -567,6 +569,32 @@ gst_vp8_enc_set_format (GstBaseVideoEncoder * base_video_encoder,
state->fps_d * GST_SECOND, state->fps_n));
encoder->inited = TRUE;
/* prepare cached image buffer setup */
image = &encoder->image;
memset (image, 0, sizeof (image));
image->fmt = VPX_IMG_FMT_I420;
image->bps = 12;
image->x_chroma_shift = image->y_chroma_shift = 1;
image->w = image->d_w = state->width;
image->h = image->d_h = state->height;
image->stride[VPX_PLANE_Y] =
gst_video_format_get_row_stride (state->format, 0, state->width);
image->stride[VPX_PLANE_U] =
gst_video_format_get_row_stride (state->format, 1, state->width);
image->stride[VPX_PLANE_V] =
gst_video_format_get_row_stride (state->format, 2, state->width);
image->planes[VPX_PLANE_Y] =
data + gst_video_format_get_component_offset (state->format, 0,
state->width, state->height);
image->planes[VPX_PLANE_U] =
data + gst_video_format_get_component_offset (state->format, 1,
state->width, state->height);
image->planes[VPX_PLANE_V] =
data + gst_video_format_get_component_offset (state->format, 2,
state->width, state->height);
return TRUE;
}
@ -753,32 +781,18 @@ gst_vp8_enc_finish (GstBaseVideoEncoder * base_video_encoder)
static vpx_image_t *
gst_vp8_enc_buffer_to_image (GstVP8Enc * enc, GstBuffer * buffer)
{
vpx_image_t *image = g_slice_new0 (vpx_image_t);
vpx_image_t *image = g_slice_new (vpx_image_t);
guint8 *data = GST_BUFFER_DATA (buffer);
GstVideoState *state = &GST_BASE_VIDEO_CODEC (enc)->state;
const GstVideoState *state;
state = gst_base_video_encoder_get_state (GST_BASE_VIDEO_ENCODER (enc));
memcpy (image, &enc->image, sizeof (*image));
image->fmt = VPX_IMG_FMT_I420;
image->bps = 12;
image->x_chroma_shift = image->y_chroma_shift = 1;
image->img_data = data;
image->w = image->d_w = state->width;
image->h = image->d_h = state->height;
image->stride[VPX_PLANE_Y] =
gst_video_format_get_row_stride (state->format, 0, state->width);
image->stride[VPX_PLANE_U] =
gst_video_format_get_row_stride (state->format, 1, state->width);
image->stride[VPX_PLANE_V] =
gst_video_format_get_row_stride (state->format, 2, state->width);
image->planes[VPX_PLANE_Y] =
data + gst_video_format_get_component_offset (state->format, 0,
state->width, state->height);
image->planes[VPX_PLANE_U] =
data + gst_video_format_get_component_offset (state->format, 1,
state->width, state->height);
image->planes[VPX_PLANE_V] =
data + gst_video_format_get_component_offset (state->format, 2,
state->width, state->height);
image->planes[VPX_PLANE_Y] += (data - (guint8 *) NULL);
image->planes[VPX_PLANE_U] += (data - (guint8 *) NULL);
image->planes[VPX_PLANE_V] += (data - (guint8 *) NULL);
return image;
}

2
ext/vp8/gstvp8enc.h
View file

@ -75,6 +75,8 @@ struct _GstVP8Enc
/* state */
gboolean inited;
vpx_image_t image;
int n_frames;
int keyframe_distance;
};