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lavd/opengl_enc: implement uncoded frame callback 

Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
This commit is contained in:
Lukasz Marek 2014-02-05 00:30:38 +01:00
parent db403023c0
commit db4a704482
1 changed files with 65 additions and 20 deletions
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85
libavdevice/opengl_enc.c
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@ -56,6 +56,7 @@
#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavformat/avformat.h"
#include "libavformat/internal.h"
#include "libavdevice/avdevice.h"
#include "opengl_enc_shaders.h"
@ -82,6 +83,7 @@
#define FF_GL_UNSIGNED_BYTE_3_3_2 0x8032
#define FF_GL_UNSIGNED_BYTE_2_3_3_REV 0x8362
#define FF_GL_UNSIGNED_SHORT_1_5_5_5_REV 0x8366
#define FF_GL_UNPACK_ROW_LENGTH 0x0CF2
/* MinGW exposes only OpenGL 1.1 API */
#define FF_GL_ARRAY_BUFFER 0x8892
@ -185,6 +187,7 @@ typedef struct OpenGLContext {
GLint max_viewport_width; ///< Maximum viewport size
GLint max_viewport_height; ///< Maximum viewport size
int non_pow_2_textures; ///< 1 when non power of 2 textures are supported
int unpack_subimage; ///< 1 when GL_EXT_unpack_subimage is available
/* Current OpenGL configuration */
GLuint program; ///< Shader program
@ -271,7 +274,7 @@ static const struct OpenGLFormatDesc {
};
static av_cold int opengl_prepare_vertex(AVFormatContext *s);
static int opengl_draw(AVFormatContext *h, AVPacket *pkt, int repaint);
static int opengl_draw(AVFormatContext *h, void *intput, int repaint, int is_pkt);
static av_cold int opengl_init_context(OpenGLContext *opengl);
static av_cold void opengl_deinit_context(OpenGLContext *opengl)
@ -315,7 +318,7 @@ static int opengl_resize(AVFormatContext *h, int width, int height)
}
if ((ret = opengl_prepare_vertex(h)) < 0)
goto end;
ret = opengl_draw(h, NULL, 1);
ret = opengl_draw(h, NULL, 1, 0);
}
end:
return ret;
@ -612,8 +615,14 @@ static av_cold int opengl_read_limits(OpenGLContext *opengl)
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &opengl->max_texture_size);
glGetIntegerv(GL_MAX_VIEWPORT_DIMS, &opengl->max_viewport_width);
opengl->non_pow_2_textures = major >= 2 || strstr(extensions, "GL_ARB_texture_non_power_of_two");
#if defined(GL_ES_VERSION_2_0)
opengl->unpack_subimage = !!strstr(extensions, "GL_EXT_unpack_subimage");
#else
opengl->unpack_subimage = 1;
#endif
av_log(opengl, AV_LOG_DEBUG, "Non Power of 2 textures support: %s\n", opengl->non_pow_2_textures ? "Yes" : "No");
av_log(opengl, AV_LOG_DEBUG, "Unpack Subimage extension support: %s\n", opengl->unpack_subimage ? "Yes" : "No");
av_log(opengl, AV_LOG_DEBUG, "Max texture size: %dx%d\n", opengl->max_texture_size, opengl->max_texture_size);
av_log(opengl, AV_LOG_DEBUG, "Max viewport size: %dx%d\n",
opengl->max_viewport_width, opengl->max_viewport_height);
@ -1137,7 +1146,45 @@ static uint8_t* opengl_get_plane_pointer(OpenGLContext *opengl, AVPacket *pkt, i
return data;
}
static int opengl_draw(AVFormatContext *h, AVPacket *pkt, int repaint)
#define LOAD_TEXTURE_DATA(comp_index, sub) \
{ \
int width = sub ? FF_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w) : opengl->width; \
int height = sub ? FF_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h): opengl->height; \
uint8_t *data; \
int plane = desc->comp[comp_index].plane; \
\
glBindTexture(GL_TEXTURE_2D, opengl->texture_name[comp_index]); \
if (!is_pkt) { \
GLint length = ((AVFrame *)input)->linesize[plane]; \
int bytes_per_pixel = opengl_type_size(opengl->type); \
if (!(desc->flags & AV_PIX_FMT_FLAG_PLANAR)) \
bytes_per_pixel *= desc->nb_components; \
data = ((AVFrame *)input)->data[plane]; \
if (!(length % bytes_per_pixel) && \
(opengl->unpack_subimage || ((length / bytes_per_pixel) == width))) { \
length /= bytes_per_pixel; \
if (length != width) \
glPixelStorei(FF_GL_UNPACK_ROW_LENGTH, length); \
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, \
opengl->format, opengl->type, data); \
if (length != width) \
glPixelStorei(FF_GL_UNPACK_ROW_LENGTH, 0); \
} else { \
int h; \
for (h = 0; h < height; h++) { \
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, h, width, 1, \
opengl->format, opengl->type, data); \
data += length; \
} \
} \
} else { \
data = opengl_get_plane_pointer(opengl, input, comp_index, desc); \
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, \
opengl->format, opengl->type, data); \
} \
}
static int opengl_draw(AVFormatContext *h, void *input, int repaint, int is_pkt)
{
OpenGLContext *opengl = h->priv_data;
enum AVPixelFormat pix_fmt = h->streams[0]->codec->pix_fmt;
@ -1157,23 +1204,12 @@ static int opengl_draw(AVFormatContext *h, AVPacket *pkt, int repaint)
glClear(GL_COLOR_BUFFER_BIT);
if (!repaint) {
glBindTexture(GL_TEXTURE_2D, opengl->texture_name[0]);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, opengl->width, opengl->height, opengl->format, opengl->type,
opengl_get_plane_pointer(opengl, pkt, 0, desc));
LOAD_TEXTURE_DATA(0, 0)
if (desc->flags & AV_PIX_FMT_FLAG_PLANAR) {
int width_chroma = FF_CEIL_RSHIFT(opengl->width, desc->log2_chroma_w);
int height_chroma = FF_CEIL_RSHIFT(opengl->height, desc->log2_chroma_h);
glBindTexture(GL_TEXTURE_2D, opengl->texture_name[1]);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width_chroma, height_chroma, opengl->format, opengl->type,
opengl_get_plane_pointer(opengl, pkt, 1, desc));
glBindTexture(GL_TEXTURE_2D, opengl->texture_name[2]);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width_chroma, height_chroma, opengl->format, opengl->type,
opengl_get_plane_pointer(opengl, pkt, 2, desc));
if (desc->flags & AV_PIX_FMT_FLAG_ALPHA) {
glBindTexture(GL_TEXTURE_2D, opengl->texture_name[3]);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, opengl->width, opengl->height, opengl->format, opengl->type,
opengl_get_plane_pointer(opengl, pkt, 3, desc));
}
LOAD_TEXTURE_DATA(1, 1)
LOAD_TEXTURE_DATA(2, 1)
if (desc->flags & AV_PIX_FMT_FLAG_ALPHA)
LOAD_TEXTURE_DATA(3, 0)
}
}
ret = AVERROR_EXTERNAL;
@ -1211,7 +1247,15 @@ static int opengl_draw(AVFormatContext *h, AVPacket *pkt, int repaint)
static int opengl_write_packet(AVFormatContext *h, AVPacket *pkt)
{
return opengl_draw(h, pkt, 0);
return opengl_draw(h, pkt, 0, 1);
}
static int opengl_write_frame(AVFormatContext *h, int stream_index,
AVFrame **frame, unsigned flags)
{
if ((flags & AV_WRITE_UNCODED_FRAME_QUERY))
return 0;
return opengl_draw(h, *frame, 0, 0);
}
#define OFFSET(x) offsetof(OpenGLContext, x)
@ -1238,6 +1282,7 @@ AVOutputFormat ff_opengl_muxer = {
.video_codec = AV_CODEC_ID_RAWVIDEO,
.write_header = opengl_write_header,
.write_packet = opengl_write_packet,
.write_uncoded_frame = opengl_write_frame,
.write_trailer = opengl_write_trailer,
.control_message = opengl_control_message,
.flags = AVFMT_NOFILE | AVFMT_VARIABLE_FPS | AVFMT_NOTIMESTAMPS,