SwsContext *GetSwsContext(int SrcW, int SrcH, AVPixelFormat SrcFormat, int SrcColorSpace, int SrcColorRange, int DstW, int DstH, AVPixelFormat DstFormat, int DstColorSpace, int DstColorRange, int64_t Flags) {
Flags |= SWS_FULL_CHR_H_INT | SWS_FULL_CHR_H_INP | SWS_ACCURATE_RND;
SwsContext *Context = sws_alloc_context();
if (!Context) return nullptr;
// 0 = limited range, 1 = full range
int SrcRange = SrcColorRange == AVCOL_RANGE_JPEG;
int DstRange = DstColorRange == AVCOL_RANGE_JPEG;
av_opt_set_int(Context, "sws_flags", Flags, 0);
av_opt_set_int(Context, "srcw", SrcW, 0);
av_opt_set_int(Context, "srch", SrcH, 0);
av_opt_set_int(Context, "dstw", DstW, 0);
av_opt_set_int(Context, "dsth", DstH, 0);
av_opt_set_int(Context, "src_range", SrcRange, 0);
av_opt_set_int(Context, "dst_range", DstRange, 0);
av_opt_set_int(Context, "src_format", SrcFormat, 0);
av_opt_set_int(Context, "dst_format", DstFormat, 0);
sws_setColorspaceDetails(Context,
sws_getCoefficients(SrcColorSpace), SrcRange,
sws_getCoefficients(DstColorSpace), DstRange,
0, 1<<16, 1<<16);
if(sws_init_context(Context, nullptr, nullptr) < 0){
sws_freeContext(Context);
return nullptr;
}
return Context;
}
void MovieDecoder::convertAndScaleFrame(PixelFormat format, int scaledSize, bool maintainAspectRatio, int& scaledWidth, int& scaledHeight)
{
calculateDimensions(scaledSize, maintainAspectRatio, scaledWidth, scaledHeight);
#ifdef LATEST_GREATEST_FFMPEG
// Enable this when it hits the released ffmpeg version
SwsContext* scaleContext = sws_alloc_context();
if (scaleContext == nullptr)
{
throw std::logic_error("Failed to allocate scale context");
}
av_set_int(scaleContext, "srcw", m_pVideoCodecContext->width);
av_set_int(scaleContext, "srch", m_pVideoCodecContext->height);
av_set_int(scaleContext, "src_format", m_pVideoCodecContext->pix_fmt);
av_set_int(scaleContext, "dstw", scaledWidth);
av_set_int(scaleContext, "dsth", scaledHeight);
av_set_int(scaleContext, "dst_format", format);
av_set_int(scaleContext, "sws_flags", SWS_BICUBIC);
const int* coeff = sws_getCoefficients(SWS_CS_DEFAULT);
if (sws_setColorspaceDetails(scaleContext, coeff, m_pVideoCodecContext->pix_fmt, coeff, format, 0, 1<<16, 1<<16) < 0)
{
sws_freeContext(scaleContext);
throw std::logic_error("Failed to set colorspace details");
}
if (sws_init_context(scaleContext, nullptr, nullptr) < 0)
{
sws_freeContext(scaleContext);
throw std::logic_error("Failed to initialise scale context");
}
#endif
SwsContext* scaleContext = sws_getContext(m_pVideoCodecContext->width, m_pVideoCodecContext->height,
m_pVideoCodecContext->pix_fmt, scaledWidth, scaledHeight,
format, SWS_BICUBIC, nullptr, nullptr, nullptr);
if (nullptr == scaleContext)
{
throw logic_error("Failed to create resize context");
}
AVFrame* convertedFrame = nullptr;
uint8_t* convertedFrameBuffer = nullptr;
createAVFrame(&convertedFrame, &convertedFrameBuffer, scaledWidth, scaledHeight, format);
sws_scale(scaleContext, m_pFrame->data, m_pFrame->linesize, 0, m_pVideoCodecContext->height,
convertedFrame->data, convertedFrame->linesize);
sws_freeContext(scaleContext);
av_free(m_pFrame);
av_free(m_pFrameBuffer);
m_pFrame = convertedFrame;
m_pFrameBuffer = convertedFrameBuffer;
}
SwsContext *FFGetSwsContext(int SrcW, int SrcH, PixelFormat SrcFormat, int DstW, int DstH, PixelFormat DstFormat, int64_t Flags, int ColorSpace, int ColorRange) {
Flags |= SWS_FULL_CHR_H_INT | SWS_FULL_CHR_H_INP;
#if LIBSWSCALE_VERSION_INT < AV_VERSION_INT(0, 12, 0)
return sws_getContext(SrcW, SrcH, SrcFormat, DstW, DstH, DstFormat, Flags, 0, 0, 0);
#else
SwsContext *Context = sws_alloc_context();
if (!Context) return 0;
// The intention here is to never change the color range.
int Range; // 0 = limited range, 1 = full range
if (ColorRange == AVCOL_RANGE_JPEG)
Range = 1;
else // explicit limited range, or unspecified
Range = 0;
av_opt_set_int(Context, "sws_flags", Flags, 0);
av_opt_set_int(Context, "srcw", SrcW, 0);
av_opt_set_int(Context, "srch", SrcH, 0);
av_opt_set_int(Context, "dstw", DstW, 0);
av_opt_set_int(Context, "dsth", DstH, 0);
av_opt_set_int(Context, "src_range", Range, 0);
av_opt_set_int(Context, "dst_range", Range, 0);
av_opt_set_int(Context, "src_format", SrcFormat, 0);
av_opt_set_int(Context, "dst_format", DstFormat, 0);
sws_setColorspaceDetails(Context, sws_getCoefficients(ColorSpace), Range, sws_getCoefficients(ColorSpace), Range, 0, 1<<16, 1<<16);
if(sws_init_context(Context, 0, 0) < 0){
sws_freeContext(Context);
return 0;
}
return Context;
#endif
}
struct SwsContext *update_scaler_configuration
(
struct SwsContext *sws_ctx,
int flags,
int width,
int height,
enum AVPixelFormat input_pixel_format,
enum AVPixelFormat output_pixel_format,
enum AVColorSpace colorspace,
int yuv_range
)
{
if( sws_ctx )
sws_freeContext( sws_ctx );
sws_ctx = sws_alloc_context();
if( !sws_ctx )
return NULL;
av_opt_set_int( sws_ctx, "sws_flags", flags, 0 );
av_opt_set_int( sws_ctx, "srcw", width, 0 );
av_opt_set_int( sws_ctx, "srch", height, 0 );
av_opt_set_int( sws_ctx, "dstw", width, 0 );
av_opt_set_int( sws_ctx, "dsth", height, 0 );
av_opt_set_int( sws_ctx, "src_format", input_pixel_format, 0 );
av_opt_set_int( sws_ctx, "dst_format", output_pixel_format, 0 );
const int *yuv2rgb_coeffs = sws_getCoefficients( colorspace );
sws_setColorspaceDetails( sws_ctx,
yuv2rgb_coeffs, yuv_range,
yuv2rgb_coeffs, yuv_range,
0, 1 << 16, 1 << 16 );
if( sws_init_context( sws_ctx, NULL, NULL ) < 0 )
{
sws_freeContext( sws_ctx );
return NULL;
}
return sws_ctx;
}
SwsContext *GetSwsContext(int SrcW, int SrcH, PixelFormat SrcFormat, int SrcColorSpace, int SrcColorRange, int DstW, int DstH, PixelFormat DstFormat, int DstColorSpace, int DstColorRange, int64_t Flags) {
Flags |= SWS_FULL_CHR_H_INT | SWS_FULL_CHR_H_INP;
#if LIBSWSCALE_VERSION_INT < AV_VERSION_INT(0, 12, 0)
return sws_getContext(SrcW, SrcH, SrcFormat, DstW, DstH, DstFormat, Flags, 0, 0, 0);
#else
SwsContext *Context = sws_alloc_context();
if (!Context) return 0;
// 0 = limited range, 1 = full range
int SrcRange = SrcColorRange == AVCOL_RANGE_JPEG;
int DstRange = DstColorRange == AVCOL_RANGE_JPEG;
av_opt_set_int(Context, "sws_flags", Flags, 0);
av_opt_set_int(Context, "srcw", SrcW, 0);
av_opt_set_int(Context, "srch", SrcH, 0);
av_opt_set_int(Context, "dstw", DstW, 0);
av_opt_set_int(Context, "dsth", DstH, 0);
av_opt_set_int(Context, "src_range", SrcRange, 0);
av_opt_set_int(Context, "dst_range", DstRange, 0);
av_opt_set_int(Context, "src_format", SrcFormat, 0);
av_opt_set_int(Context, "dst_format", DstFormat, 0);
sws_setColorspaceDetails(Context,
sws_getCoefficients(SrcColorSpace), SrcRange,
sws_getCoefficients(DstColorSpace), DstRange,
0, 1<<16, 1<<16);
if(sws_init_context(Context, 0, 0) < 0) {
sws_freeContext(Context);
return 0;
}
return Context;
#endif
}
int yuv420P2rgb24(unsigned char *yuv_data, unsigned char *rgb24_data, int width, int hight)
{
//Parameters
// FILE *src_file =fopen("pre.yuv", "rb");
// if (src_file == NULL)
// {
// perror("open pre.yuv error\n");
// }
const int src_w=1328,src_h=hight;//1328*720
enum AVPixelFormat src_pixfmt=AV_PIX_FMT_YUV420P;
int src_bpp=av_get_bits_per_pixel(av_pix_fmt_desc_get(src_pixfmt));
// FILE *dst_file = fopen("sintel_1280x720_rgb24.rgb", "wb");
// if (dst_file == NULL)
// {
// perror("open sintel_1280x720_rgb24.rgb error\n");
// }
const int dst_w=width,dst_h=hight;
enum AVPixelFormat dst_pixfmt=AV_PIX_FMT_RGB24;
int dst_bpp=av_get_bits_per_pixel(av_pix_fmt_desc_get(dst_pixfmt));
//Structures
uint8_t *src_data[4];
int src_linesize[4];
uint8_t *dst_data[4];
int dst_linesize[4];
int rescale_method=SWS_BICUBIC;
struct SwsContext *img_convert_ctx;
uint8_t *temp_buffer=(uint8_t *)malloc(src_w*src_h*src_bpp/8);
int frame_idx=0;
int ret=0;
ret= av_image_alloc(src_data, src_linesize,src_w, src_h, src_pixfmt, 1);
if (ret< 0) {
printf( "Could not allocate source image\n");
return -1;
}
ret = av_image_alloc(dst_data, dst_linesize,dst_w, dst_h, dst_pixfmt, 1);
if (ret< 0) {
printf( "Could not allocate destination image\n");
return -1;
}
//-----------------------------
//Init Method 1
img_convert_ctx =sws_alloc_context();
//Show AVOption
//av_opt_show2(img_convert_ctx,stdout,AV_OPT_FLAG_VIDEO_PARAM,0);
//Set Value
av_opt_set_int(img_convert_ctx,"sws_flags",SWS_BICUBIC|SWS_PRINT_INFO,0);
av_opt_set_int(img_convert_ctx,"srcw",src_w,0);
av_opt_set_int(img_convert_ctx,"srch",src_h,0);
av_opt_set_int(img_convert_ctx,"src_format",src_pixfmt,0);
//'0' for MPEG (Y:0-235);'1' for JPEG (Y:0-255)
av_opt_set_int(img_convert_ctx,"src_range",1,0);
av_opt_set_int(img_convert_ctx,"dstw",dst_w,0);
av_opt_set_int(img_convert_ctx,"dsth",dst_h,0);
av_opt_set_int(img_convert_ctx,"dst_format",dst_pixfmt,0);
av_opt_set_int(img_convert_ctx,"dst_range",1,0);
sws_init_context(img_convert_ctx,NULL,NULL);
//Init Method 2
//img_convert_ctx = sws_getContext(src_w, src_h,src_pixfmt, dst_w, dst_h, dst_pixfmt,
// rescale_method, NULL, NULL, NULL);
//-----------------------------
/*
//Colorspace
ret=sws_setColorspaceDetails(img_convert_ctx,sws_getCoefficients(SWS_CS_ITU601),0,
sws_getCoefficients(SWS_CS_ITU709),0,
0, 1 << 16, 1 << 16);
if (ret==-1) {
printf( "Colorspace not support.\n");
return -1;
}
*/
// while(1)
// {
//
memcpy(temp_buffer, yuv_data, src_w*src_h*src_bpp/8);
// if (fread(temp_buffer, 1, src_w*src_h*src_bpp/8, src_file) != src_w*src_h*src_bpp/8){
// break;
// }
switch(src_pixfmt){
case AV_PIX_FMT_GRAY8:{
memcpy(src_data[0],temp_buffer,src_w*src_h);
break;
}
case AV_PIX_FMT_YUV420P:{
memcpy(src_data[0],temp_buffer,src_w*src_h); //Y
memcpy(src_data[1],temp_buffer+src_w*src_h,src_w*src_h/4); //U
memcpy(src_data[2],temp_buffer+src_w*src_h*5/4,src_w*src_h/4); //V
break;
}
case AV_PIX_FMT_YUV422P:{
memcpy(src_data[0],temp_buffer,src_w*src_h); //Y
memcpy(src_data[1],temp_buffer+src_w*src_h,src_w*src_h/2); //U
memcpy(src_data[2],temp_buffer+src_w*src_h*3/2,src_w*src_h/2); //V
break;
}
case AV_PIX_FMT_YUV444P:{
memcpy(src_data[0],temp_buffer,src_w*src_h); //Y
memcpy(src_data[1],temp_buffer+src_w*src_h,src_w*src_h); //U
memcpy(src_data[2],temp_buffer+src_w*src_h*2,src_w*src_h); //V
break;
}
case AV_PIX_FMT_YUYV422:{
memcpy(src_data[0],temp_buffer,src_w*src_h*2); //Packed
break;
}
case AV_PIX_FMT_RGB24:{
memcpy(src_data[0],temp_buffer,src_w*src_h*3); //Packed
break;
}
default:{
printf("Not Support Input Pixel Format.\n");
break;
}
}
sws_scale(img_convert_ctx, src_data, src_linesize, 0, src_h, dst_data, dst_linesize);
frame_idx++;
switch(dst_pixfmt){
case AV_PIX_FMT_GRAY8:{
memcpy(rgb24_data, dst_data[0], dst_w*dst_h);
break;
}
case AV_PIX_FMT_YUV420P:{
memcpy(rgb24_data, dst_data[0], dst_w*dst_h);rgb24_data+=dst_w*dst_h;
memcpy(rgb24_data, dst_data[1], dst_w*dst_h/4);rgb24_data+=dst_w*dst_h/4;
memcpy(rgb24_data, dst_data[2], dst_w*dst_h/4);rgb24_data+=dst_w*dst_h/4;
break;
}
case AV_PIX_FMT_YUV422P:{
// fwrite(dst_data[0],1,dst_w*dst_h,dst_file); //Y
// fwrite(dst_data[1],1,dst_w*dst_h/2,dst_file); //U
// fwrite(dst_data[2],1,dst_w*dst_h/2,dst_file); //V
break;
}
case AV_PIX_FMT_YUV444P:{
// fwrite(dst_data[0],1,dst_w*dst_h,dst_file); //Y
// fwrite(dst_data[1],1,dst_w*dst_h,dst_file); //U
// fwrite(dst_data[2],1,dst_w*dst_h,dst_file); //V
break;
}
case AV_PIX_FMT_YUYV422:{
// fwrite(dst_data[0],1,dst_w*dst_h*2,dst_file); //Packed
break;
}
case AV_PIX_FMT_RGB24:{
memcpy(rgb24_data, dst_data[0], dst_w*dst_h*3);
// fwrite(dst_data[0],1,dst_w*dst_h*3,dst_file); //Packed
break;
}
default:{
printf("Not Support Output Pixel Format.\n");
break;
}
}
// }
sws_freeContext(img_convert_ctx);
free(temp_buffer);
// fclose(dst_file);
av_freep(&src_data[0]);
av_freep(&dst_data[0]);
return 0;
}
unsigned long* ffmpegsimple_readfirstframe_impl(
struct ffmpeg_simple_data *d
,const char* filename
,int *width
,int *height
) {
if (avformat_open_input(&d->pFormatCtx, filename, NULL, NULL)!=0) {
fprintf(stderr, "av_open_input_file failed\n");
return NULL;
}
if(avformat_find_stream_info(d->pFormatCtx, NULL)<0) {
fprintf(stderr, "avformat_find_stream_info failed\n");
return NULL;
}
int i;
for(i=0; i < d->pFormatCtx->nb_streams; i++) {
AVStream *r = d->pFormatCtx->streams[i];
if(r->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
if (!d->videoStream) {
d->videoStream = r;
d->videoStreamIndex = i;
} else {
fprintf(stderr, "Warning: ignoring other video streams\n");
}
}
}
if (!d->videoStream) {
fprintf(stderr, "No video streams found\n");
return NULL;
}
d->pCodec = avcodec_find_decoder(d->videoStream->codec->codec_id);
if (d->pCodec==NULL) {
fprintf(stderr, "Can't find the codec\n");
return NULL;
}
if(avcodec_open2(d->videoStream->codec, d->pCodec, NULL)<0){
fprintf(stderr, "Can't open the codec\n");
return NULL;
}
int packet_limit = 256;
int no_more_frames_flag = 0;
int read_at_least_one_packet = 0;
int read_at_least_one_our_packet = 0;
for(;;) {
if (!no_more_frames_flag) {
for(;;) {
int ret = av_read_frame(d->pFormatCtx, &d->packet);
if (ret<0) {
no_more_frames_flag = 1;
break;
}
read_at_least_one_packet = 1;
if (d->packet.stream_index == d->videoStream->index) {
read_at_least_one_our_packet = 1;
break; // OK, it's our packet;
}
if (!--packet_limit) {
fprintf(stderr, "Packet limit expired while reading more packets\n");
return NULL;
}
}
}
if (no_more_frames_flag && !read_at_least_one_our_packet) {
if (read_at_least_one_packet) {
fprintf(stderr, "Can't read any packet for our track\n");
} else {
fprintf(stderr, "Can't read any packets\n");
}
return NULL;
}
d->frame = avcodec_alloc_frame();
d->frameRGB = avcodec_alloc_frame();
int isFrameAvailable;
int ret = avcodec_decode_video2(d->videoStream->codec, d->frame, &isFrameAvailable, &d->packet);
if (ret < 0) {
fprintf(stderr, "avcodec_decode_video2 failed\n");
return NULL;
}
if (isFrameAvailable) {
break;
}
if (!--packet_limit) {
fprintf(stderr, "Decoding tries limit expired\n");
return NULL;
}
}
int w = d->frame->width;
int h = d->frame->height;
if (width ) *width = w;
if (height) *height = h;
int numBytes=avpicture_get_size(PIX_FMT_BGRA, w, h);
d->img_convert_ctx = sws_alloc_context();
d->img_convert_ctx = sws_getCachedContext(
d->img_convert_ctx,
w, h, d->videoStream->codec->pix_fmt,
w, h, PIX_FMT_BGRA,
SWS_BICUBIC, NULL, NULL, NULL);
if (d->img_convert_ctx == NULL) {
fprintf(stderr, "Cannot initialize the conversion context\n");
return NULL;
}
unsigned char* buffer = malloc(numBytes);
if (!buffer) {
fprintf(stderr, "Cannot allocate picture buffer\n");
return NULL;
}
// Assign appropriate parts of buffer to image planes in pFrameRGB
avpicture_fill((AVPicture *)d->frameRGB, buffer, PIX_FMT_BGRA, w, h);
sws_scale(d->img_convert_ctx,
(const unsigned char*const*)d->frame->data,
d->frame->linesize, 0, d->videoStream->codec->height,
d->frameRGB->data, d->frameRGB->linesize);
return (unsigned long*) buffer;
}
void write_video_frame(AVFormatContext *oc, AVStream *st)
{
int out_size, ret;
AVCodecContext *c;
static struct SwsContext *img_convert_ctx;
//printf("Here0 \n");
c = st->codec;
if (c->pix_fmt != PIX_FMT_YUV420P) {
/* as we only generate a YUV420P picture, we must convert it
to the codec pixel format if needed */
if (img_convert_ctx == NULL) {
#if (LIBSWSCALE_VERSION_INT<AV_VERSION_INT(0,12,0))
img_convert_ctx = sws_getContext(c->width, c->height,
PIX_FMT_YUV420P,
c->width, c->height,
c->pix_fmt,
sws_flags, NULL, NULL, NULL);
#else
img_convert_ctx = sws_alloc_context();
if (img_convert_ctx == NULL) {
fprintf(stderr, "Cannot initialize the conversion context\n");
exit(1);
}
/* see http://permalink.gmane.org/gmane.comp.video.ffmpeg.devel/118362 */
/* see http://ffmpeg-users.933282.n4.nabble.com/Documentation-for-sws-init-context-td2956723.html */
av_set_int(img_convert_ctx, "srcw", c->width);
av_set_int(img_convert_ctx, "srch", c->height);
av_set_int(img_convert_ctx, "dstw", c->width);
av_set_int(img_convert_ctx, "dsth", c->height);
av_set_int(img_convert_ctx, "src_format", PIX_FMT_YUV420P);
av_set_int(img_convert_ctx, "dst_format", c->pix_fmt);
av_set_int(img_convert_ctx, "param0", 0);
av_set_int(img_convert_ctx, "param1", 0);
av_set_int(img_convert_ctx, "flags", sws_flags);
sws_init_context(img_convert_ctx,NULL,NULL);
#endif
}
sws_scale(img_convert_ctx, (const uint8_t* const *)tmp_picture->data,
tmp_picture->linesize,
0, c->height, picture_to_encode->data, picture_to_encode->linesize);
} else {
}
if (oc->oformat->flags & AVFMT_RAWPICTURE) {
/* raw video case. The API will change slightly in the near
futur for that */
AVPacket pkt;
av_init_packet(&pkt);
pkt.flags |= AV_PKT_FLAG_KEY;
pkt.stream_index= st->index;
pkt.data= (uint8_t *)picture_to_encode;
pkt.size= sizeof(AVPicture);
ret = av_interleaved_write_frame(oc, &pkt);
} else {
/* encode the image */
//printf("Here1 \n");
out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, picture_to_encode);
/* if zero size, it means the image was buffered */
if (out_size > 0) {
AVPacket pkt;
av_init_packet(&pkt);
if (c->coded_frame->pts != AV_NOPTS_VALUE)
pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, st->time_base);
if(c->coded_frame->key_frame)
pkt.flags |= AV_PKT_FLAG_KEY;
pkt.stream_index= st->index;
pkt.data= video_outbuf;
pkt.size= out_size;
/* write the compressed frame in the media file */
ret = av_interleaved_write_frame(oc, &pkt);
} else {
ret = 0;
}
}
if (ret != 0) {
fprintf(stderr, "Error while writing video frame\n");
exit(1);
}
frame_count++;
}
static int output_single_frame(AVFilterContext *ctx, AVFrame *in, double *var_values, int i,
double *zoom, double *dx, double *dy)
{
ZPContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
int64_t pts = s->frame_count;
int k, x, y, w, h, ret = 0;
uint8_t *input[4];
int px[4], py[4];
AVFrame *out;
var_values[VAR_PX] = s->x;
var_values[VAR_PY] = s->y;
var_values[VAR_PZOOM] = s->prev_zoom;
var_values[VAR_PDURATION] = s->prev_nb_frames;
var_values[VAR_TIME] = pts * av_q2d(outlink->time_base);
var_values[VAR_FRAME] = i;
var_values[VAR_ON] = outlink->frame_count + 1;
if ((ret = av_expr_parse_and_eval(zoom, s->zoom_expr_str,
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
return ret;
*zoom = av_clipd(*zoom, 1, 10);
var_values[VAR_ZOOM] = *zoom;
w = in->width * (1.0 / *zoom);
h = in->height * (1.0 / *zoom);
if ((ret = av_expr_parse_and_eval(dx, s->x_expr_str,
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
return ret;
x = *dx = av_clipd(*dx, 0, FFMAX(in->width - w, 0));
var_values[VAR_X] = *dx;
x &= ~((1 << s->desc->log2_chroma_w) - 1);
if ((ret = av_expr_parse_and_eval(dy, s->y_expr_str,
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
return ret;
y = *dy = av_clipd(*dy, 0, FFMAX(in->height - h, 0));
var_values[VAR_Y] = *dy;
y &= ~((1 << s->desc->log2_chroma_h) - 1);
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
ret = AVERROR(ENOMEM);
return ret;
}
px[1] = px[2] = AV_CEIL_RSHIFT(x, s->desc->log2_chroma_w);
px[0] = px[3] = x;
py[1] = py[2] = AV_CEIL_RSHIFT(y, s->desc->log2_chroma_h);
py[0] = py[3] = y;
s->sws = sws_alloc_context();
if (!s->sws) {
ret = AVERROR(ENOMEM);
return ret;
}
for (k = 0; in->data[k]; k++)
input[k] = in->data[k] + py[k] * in->linesize[k] + px[k];
av_opt_set_int(s->sws, "srcw", w, 0);
av_opt_set_int(s->sws, "srch", h, 0);
av_opt_set_int(s->sws, "src_format", in->format, 0);
av_opt_set_int(s->sws, "dstw", outlink->w, 0);
av_opt_set_int(s->sws, "dsth", outlink->h, 0);
av_opt_set_int(s->sws, "dst_format", outlink->format, 0);
av_opt_set_int(s->sws, "sws_flags", SWS_BICUBIC, 0);
if ((ret = sws_init_context(s->sws, NULL, NULL)) < 0)
return ret;
sws_scale(s->sws, (const uint8_t *const *)&input, in->linesize, 0, h, out->data, out->linesize);
out->pts = pts;
s->frame_count++;
ret = ff_filter_frame(outlink, out);
sws_freeContext(s->sws);
s->sws = NULL;
s->current_frame++;
return ret;
}
int FrameScaler::SetResize(int srcWidth,int srcHeight,int srcLineWidth,int dstWidth,int dstHeight,int dstLineWidth)
{
// Check Size
if (!srcWidth || !srcHeight || !srcLineWidth || !dstWidth || !dstHeight || !dstLineWidth)
{
//If we got a context
if (resizeCtx)
//Closse context
sws_freeContext(resizeCtx);
// No valid context
resizeCtx = NULL;
//Exit
return 0;
}
// Check if we already have a scaler for this
if (resizeCtx && (resizeWidth==srcWidth) && (srcHeight==resizeHeight) && (dstWidth==resizeDstWidth) && (dstHeight==resizeDstHeight))
//Done
return 1;
//If we already got a context
if (resizeCtx)
//Closse context
sws_freeContext(resizeCtx);
// Create new context
if (!(resizeCtx = sws_alloc_context()))
// Exit
return 0;
// Set property's of context
av_opt_set_defaults(resizeCtx);
av_opt_set_int(resizeCtx, "srcw", srcWidth ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(resizeCtx, "srch", srcHeight ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(resizeCtx, "src_format", PIX_FMT_YUV420P ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(resizeCtx, "dstw", dstWidth ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(resizeCtx, "dsth", dstHeight ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(resizeCtx, "dst_format", PIX_FMT_YUV420P ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(resizeCtx, "sws_flags", resizeFlags ,AV_OPT_SEARCH_CHILDREN);
// Init context
if (sws_init_context(resizeCtx, NULL, NULL) < 0)
{
//Free context
sws_freeContext(resizeCtx);
//Nullify it
resizeCtx = NULL;
// Exit
return Error("Couldn't init sws context");
}
// Set values
resizeWidth = srcWidth;
resizeHeight = srcHeight;
resizeDstWidth = dstWidth;
resizeDstHeight = dstHeight;
resizeDstLineWidth = dstLineWidth;
//to use MM2 we need the width and heinght to be multiple of 32
tmpWidth = (resizeDstWidth/32 +1)*32;
tmpHeight = (resizeDstHeight/32 +1)*32;
//Get tmp buffer size
tmpBufferSize = tmpWidth*tmpHeight*3/2+FF_INPUT_BUFFER_PADDING_SIZE+32;
//Check if we had it already
if (tmpBuffer)
//Free it
free(tmpBuffer);
//Allocate it
tmpBuffer = (BYTE*)malloc(tmpBufferSize);
// Set values for line sizes
resizeSrc[0] = srcLineWidth;
resizeSrc[1] = srcLineWidth/2;
resizeSrc[2] = srcLineWidth/2;
/*resizeDst[0] = dstLineWidth;
resizeDst[1] = dstLineWidth/2;
resizeDst[2] = dstLineWidth/2;*/
resizeDst[0] = tmpWidth;
resizeDst[1] = tmpWidth/2;
resizeDst[2] = tmpWidth/2;
//Get tmp planes
tmpY = ALIGNTO32(tmpBuffer);
tmpU = tmpY+tmpWidth*tmpHeight;
tmpV = tmpU+tmpWidth*tmpHeight/4;
// exit
return 1;
}
/*
* 初始化视频解码参数
* platform: 0:A5s66 1:3516A(Hisi)
* encode: 0:h.264 1:h.265 2:jpeg
*/
void QDecodeStream::ipcam_decode_init(int platform,int encode)
{
int pps_code_size;
AVDictionary *opts = NULL;
avcodec_register_all(); //注册所有的文件格式和编解码库，只能调用一次
if(encode == H264)
decode_h264.codec = avcodec_find_decoder(AV_CODEC_ID_H264);
else if(encode == H265)
decode_h264.codec = avcodec_find_decoder(AV_CODEC_ID_H265);
else if(encode == JPEG)
decode_h264.codec = avcodec_find_decoder(AV_CODEC_ID_MJPEG);
decode_h264.codecCtx = avcodec_alloc_context3(decode_h264.codec); //解码器的环境变量选择解码器
//decode_h264.codecCtx->flags |= CODEC_FLAG_TRUNCATED;
int frame_thread_supported = (decode_h264.codecCtx->codec->capabilities & CODEC_CAP_FRAME_THREADS)
&& !(decode_h264.codecCtx->flags & CODEC_FLAG_TRUNCATED)
&& !(decode_h264.codecCtx->flags2 & CODEC_FLAG_LOW_DELAY)
&& !(decode_h264.codecCtx->flags2 & CODEC_FLAG2_CHUNKS);
decode_h264.codecCtx->delay = 0;
if(decode_h264.codecCtx->thread_count == 1)
{
decode_h264.codecCtx->active_thread_type = 0;
}
else if(frame_thread_supported && (decode_h264.codecCtx->thread_type & FF_THREAD_FRAME))
{
decode_h264.codecCtx->active_thread_type = FF_THREAD_FRAME;
}
else if((decode_h264.codecCtx->codec->capabilities & CODEC_CAP_SLICE_THREADS) &&
(decode_h264.codecCtx->thread_type & FF_THREAD_SLICE))
{
decode_h264.codecCtx->active_thread_type = FF_THREAD_SLICE;
}
else if(!(decode_h264.codecCtx->codec->capabilities & CODEC_CAP_AUTO_THREADS))
{
decode_h264.codecCtx->thread_count = 1;
decode_h264.codecCtx->active_thread_type = 0;
}
if(decode_h264.codecCtx->thread_count > MAX_AUTO_THREADS)
{
av_log(decode_h264.codecCtx,AV_LOG_WARNING,"Application has requested %d threads.Using a thread count greater than %d is not recommended.\n",
decode_h264.codecCtx->thread_count,MAX_AUTO_THREADS);
}
//根据编码，决定PPS PSP的头格式数据
pps_code_size = decoder_pps_psp(platform,encode);
if(pps_code_size == 0)
printf("get pps & psp head failed!\n");
/*
//解码设置
if(encode == H265)
{
av_opt_set(decode_h264.codecCtx->priv_data,"x265-params","qp=0",0);
av_opt_set(decode_h264.codecCtx->priv_data,"preset","veryfast",0);
av_opt_set(decode_h264.codecCtx->priv_data,"x265-params","crf=10",0);
}
decode_h264.codecCtx->codec_type = AVMEDIA_TYPE_VIDEO;
decode_h264.codecCtx->time_base.den = 25;
decode_h264.codecCtx->global_quality = 1;
av_opt_set(decode_h264.codecCtx->priv_data,"tune","zero-latency",0);
decode_h264.codecCtx->active_thread_type |= FF_THREAD_FRAME;
*/
//打开编码
avcodec_open2(decode_h264.codecCtx, decode_h264.codec, &opts);
decode_h264.frame = av_frame_alloc();
decode_h264.parser = av_parser_init(AV_CODEC_ID_H264);
decode_h264.img_convert_ctx = sws_alloc_context();
sws_init_context(decode_h264.img_convert_ctx,NULL,NULL);
//分配一帧图像的存储空间
one_frame_buffer = (uint8_t *)av_malloc(avpicture_get_size(AV_PIX_FMT_RGB24,
play_win->image.width,play_win->image.height));
}
void VideoPlayer::start()
{
LOG_START();
if (! mStop) {
return;
}
mStop = false;
mTimeScale = 1.0;
av_register_all();
mFilePath = CCFileUtils::sharedFileUtils()->fullPathForFilename(mPath);
vLOGE("file path: %s\n", mFilePath.c_str());
if (avformat_open_input(&mFormatCtx, mFilePath.c_str(), nullptr, nullptr) != 0) {
vLOGE("avformat_open_input failed.\n");
return;
}
if (avformat_find_stream_info(mFormatCtx, nullptr) < 0) {
vLOGE("avformat_find_stream_info failed.\n");
return;
}
for (int i = 0; i < mFormatCtx->nb_streams; i ++) {
if (mVideoStreamIndex == -1 && mFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
mVideoStreamIndex = i;
break;
}
}
vLOGE("video stream index: %d\n", mVideoStreamIndex);
if (mVideoStreamIndex == -1) {
return;
}
if (mWidth <= 0) {
mWidth = mFormatCtx->streams[mVideoStreamIndex]->codec->width;
}
if (mHeight <= 0) {
mHeight = mFormatCtx->streams[mVideoStreamIndex]->codec->height;
}
vLOGE("width: %d height: %d\n", mWidth, mHeight);
mCodecCtx = mFormatCtx->streams[mVideoStreamIndex]->codec;
mCodecCtx->thread_count = 4;
AVCodec *codec = avcodec_find_decoder(mCodecCtx->codec_id);
if (codec == nullptr) {
vLOGE("avcodec_find_decoder failed.\n");
return;
}
if (avcodec_open2(mCodecCtx, codec, nullptr) != 0) {
vLOGE("avcodec_open2 failed.\n");
return;
}
if ((mFrame = av_frame_alloc()) == nullptr) {
vLOGE("av_frame_alloc failed.\n");
}
mImageConvertCtx = sws_alloc_context();
if (mImageConvertCtx == nullptr) {
vLOGE("sws_alloc_context failed.\n");
return;
}
sws_init_context(mImageConvertCtx, nullptr, nullptr);
mImageConvertCtx = sws_getContext(mCodecCtx->width,
mCodecCtx->height,
mCodecCtx->pix_fmt,
mWidth,
mHeight,
PIX_FMT_RGB24,
SWS_FAST_BILINEAR, NULL, NULL, NULL);
const CCSize& size = CCDirector::getInstance()->getWinSize();
setPosition(Vec2(size.width, size.height));
pthread_create(&mDcoderThread, nullptr, doProcessVideo, this);
pthread_create(&mRenderThread, nullptr, doTimeCounter, this);
LOG_END();
}
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
{
AVFilterContext *ctx = inlink->dst;
AVFilterLink *outlink = ctx->outputs[0];
ZPContext *s = ctx->priv;
double var_values[VARS_NB], nb_frames, zoom, dx, dy;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(in->format);
AVFrame *out;
int i, k, x, y, w, h, ret = 0;
var_values[VAR_IN_W] = var_values[VAR_IW] = in->width;
var_values[VAR_IN_H] = var_values[VAR_IH] = in->height;
var_values[VAR_OUT_W] = var_values[VAR_OW] = s->w;
var_values[VAR_OUT_H] = var_values[VAR_OH] = s->h;
var_values[VAR_IN] = inlink->frame_count + 1;
var_values[VAR_ON] = outlink->frame_count + 1;
var_values[VAR_PX] = s->x;
var_values[VAR_PY] = s->y;
var_values[VAR_X] = 0;
var_values[VAR_Y] = 0;
var_values[VAR_PZOOM] = s->prev_zoom;
var_values[VAR_ZOOM] = 1;
var_values[VAR_PDURATION] = s->prev_nb_frames;
var_values[VAR_A] = (double) in->width / in->height;
var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
(double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
var_values[VAR_HSUB] = 1 << desc->log2_chroma_w;
var_values[VAR_VSUB] = 1 << desc->log2_chroma_h;
if ((ret = av_expr_parse_and_eval(&nb_frames, s->duration_expr_str,
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
goto fail;
var_values[VAR_DURATION] = nb_frames;
for (i = 0; i < nb_frames; i++) {
int px[4];
int py[4];
uint8_t *input[4];
int64_t pts = av_rescale_q(in->pts, inlink->time_base,
outlink->time_base) + s->frame_count;
var_values[VAR_TIME] = pts * av_q2d(outlink->time_base);
var_values[VAR_FRAME] = i;
var_values[VAR_ON] = outlink->frame_count + 1;
if ((ret = av_expr_parse_and_eval(&zoom, s->zoom_expr_str,
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
goto fail;
zoom = av_clipd(zoom, 1, 10);
var_values[VAR_ZOOM] = zoom;
w = in->width * (1.0 / zoom);
h = in->height * (1.0 / zoom);
if ((ret = av_expr_parse_and_eval(&dx, s->x_expr_str,
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
goto fail;
x = dx = av_clipd(dx, 0, FFMAX(in->width - w, 0));
var_values[VAR_X] = dx;
x &= ~((1 << desc->log2_chroma_w) - 1);
if ((ret = av_expr_parse_and_eval(&dy, s->y_expr_str,
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
goto fail;
y = dy = av_clipd(dy, 0, FFMAX(in->height - h, 0));
var_values[VAR_Y] = dy;
y &= ~((1 << desc->log2_chroma_h) - 1);
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!out) {
ret = AVERROR(ENOMEM);
goto fail;
}
px[1] = px[2] = FF_CEIL_RSHIFT(x, desc->log2_chroma_w);
px[0] = px[3] = x;
py[1] = py[2] = FF_CEIL_RSHIFT(y, desc->log2_chroma_h);
py[0] = py[3] = y;
s->sws = sws_alloc_context();
if (!s->sws) {
ret = AVERROR(ENOMEM);
goto fail;
}
for (k = 0; in->data[k]; k++)
input[k] = in->data[k] + py[k] * in->linesize[k] + px[k];
av_opt_set_int(s->sws, "srcw", w, 0);
av_opt_set_int(s->sws, "srch", h, 0);
av_opt_set_int(s->sws, "src_format", in->format, 0);
av_opt_set_int(s->sws, "dstw", outlink->w, 0);
av_opt_set_int(s->sws, "dsth", outlink->h, 0);
av_opt_set_int(s->sws, "dst_format", outlink->format, 0);
av_opt_set_int(s->sws, "sws_flags", SWS_BICUBIC, 0);
if ((ret = sws_init_context(s->sws, NULL, NULL)) < 0)
goto fail;
sws_scale(s->sws, (const uint8_t *const *)&input, in->linesize, 0, h, out->data, out->linesize);
out->pts = pts;
s->frame_count++;
ret = ff_filter_frame(outlink, out);
if (ret < 0)
break;
sws_freeContext(s->sws);
s->sws = NULL;
}
s->x = dx;
s->y = dy;
s->prev_zoom = zoom;
s->prev_nb_frames = nb_frames;
fail:
sws_freeContext(s->sws);
s->sws = NULL;
av_frame_free(&in);
return ret;
}
MediaRet MediaRecorder::setup_video_stream(const char *fname, int w, int h, int d)
{
AVCodecContext *ctx;
vid_st = av_new_stream(oc, 0);
if(!vid_st) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOMEM;
}
ctx = vid_st->codec;
ctx->codec_id = oc->oformat->video_codec;
ctx->codec_type = AVMEDIA_TYPE_VIDEO;
ctx->width = w;
ctx->height = h;
ctx->time_base.den = 60;
ctx->time_base.num = 1;
// dunno if any of these help; some output just looks plain crappy
// will have to investigate further
ctx->bit_rate = 400000;
ctx->gop_size = 12;
ctx->max_b_frames = 2;
switch(d) {
case 16:
// FIXME: test & make endian-neutral
pixfmt = PIX_FMT_RGB565LE;
break;
case 24:
pixfmt = PIX_FMT_RGB24;
break;
case 32:
default: // should never be anything else
pixfmt = PIX_FMT_RGBA;
break;
}
ctx->pix_fmt = pixfmt;
pixsize = d >> 3;
linesize = pixsize * w;
ctx->max_b_frames = 2;
if(oc->oformat->flags & AVFMT_GLOBALHEADER)
ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;
AVCodec *codec = avcodec_find_encoder(oc->oformat->video_codec);
// make sure RGB is supported (mostly not)
if(codec->pix_fmts) {
const enum PixelFormat *p;
int64_t mask = 0;
for(p = codec->pix_fmts; *p != -1; p++) {
// may get complaints about 1LL; thus the cast
mask |= ((int64_t)1) << *p;
if(*p == pixfmt)
break;
}
if(*p == -1) {
// if not supported, use a converter to the next best format
// this is swscale, the converter used by the output demo
enum PixelFormat dp = (PixelFormat)avcodec_find_best_pix_fmt(mask, pixfmt, 0, NULL);
if(dp == -1)
dp = codec->pix_fmts[0];
if(!(convpic = avcodec_alloc_frame()) ||
avpicture_alloc((AVPicture *)convpic, dp, w, h) < 0) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOMEM;
}
#if LIBSWSCALE_VERSION_INT < AV_VERSION_INT(0, 12, 0)
converter = sws_getContext(w, h, pixfmt, w, h, dp, SWS_BICUBIC,
NULL, NULL, NULL);
#else
converter = sws_alloc_context();
// what a convoluted, inefficient way to set options
av_set_int(converter, "sws_flags", SWS_BICUBIC);
av_set_int(converter, "srcw", w);
av_set_int(converter, "srch", h);
av_set_int(converter, "dstw", w);
av_set_int(converter, "dsth", h);
av_set_int(converter, "src_format", pixfmt);
av_set_int(converter, "dst_format", dp);
sws_init_context(converter, NULL, NULL);
#endif
ctx->pix_fmt = dp;
}
}
if(!codec || avcodec_open(ctx, codec)) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOCODEC;
}
return MRET_OK;
}
MediaRet MediaRecorder::setup_sound_stream(const char *fname, AVOutputFormat *fmt)
{
oc = avformat_alloc_context();
if(!oc)
return MRET_ERR_NOMEM;
oc->oformat = fmt;
strncpy(oc->filename, fname, sizeof(oc->filename) - 1);
oc->filename[sizeof(oc->filename) - 1] = 0;
if(fmt->audio_codec == CODEC_ID_NONE)
return MRET_OK;
AVCodecContext *ctx;
#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53,10,0)
aud_st = av_new_stream(oc, 1);
#else
aud_st = avformat_new_stream(oc, NULL);
#endif
if(!aud_st) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOMEM;
}
AVCodec *codec = avcodec_find_encoder(fmt->audio_codec);
ctx = aud_st->codec;
ctx->codec_id = fmt->audio_codec;
ctx->codec_type = AVMEDIA_TYPE_AUDIO;
// Some encoders don't like int16_t (SAMPLE_FMT_S16)
ctx->sample_fmt = codec->sample_fmts[0];
// This was changed in the initial ffmpeg 3.0 update,
// but shouldn't (as far as I'm aware) cause problems with older versions
ctx->bit_rate = 128000; // arbitrary; in case we're generating mp3
ctx->sample_rate = soundGetSampleRate();
ctx->channels = 2;
ctx->time_base.den = 60;
ctx->time_base.num = 1;
if(fmt->flags & AVFMT_GLOBALHEADER)
ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(53,6,0)
if(!codec || avcodec_open(ctx, codec)) {
#else
if(!codec || avcodec_open2(ctx, codec, NULL)) {
#endif
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOCODEC;
}
return MRET_OK;
}
MediaRet MediaRecorder::setup_video_stream(const char *fname, int w, int h, int d)
{
AVCodecContext *ctx;
#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53,10,0)
vid_st = av_new_stream(oc, 0);
#else
vid_st = avformat_new_stream(oc, NULL);
#endif
if(!vid_st) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOMEM;
}
ctx = vid_st->codec;
ctx->codec_id = oc->oformat->video_codec;
ctx->codec_type = AVMEDIA_TYPE_VIDEO;
ctx->width = w;
ctx->height = h;
ctx->time_base.den = 60;
ctx->time_base.num = 1;
// dunno if any of these help; some output just looks plain crappy
// will have to investigate further
ctx->bit_rate = 400000;
ctx->gop_size = 12;
ctx->max_b_frames = 2;
switch(d) {
case 16:
// FIXME: test & make endian-neutral
pixfmt = PIX_FMT_RGB565LE;
break;
case 24:
pixfmt = PIX_FMT_RGB24;
break;
case 32:
default: // should never be anything else
pixfmt = PIX_FMT_RGBA;
break;
}
ctx->pix_fmt = pixfmt;
pixsize = d >> 3;
linesize = pixsize * w;
ctx->max_b_frames = 2;
if(oc->oformat->flags & AVFMT_GLOBALHEADER)
ctx->flags |= CODEC_FLAG_GLOBAL_HEADER;
AVCodec *codec = avcodec_find_encoder(oc->oformat->video_codec);
// make sure RGB is supported (mostly not)
if(codec->pix_fmts) {
const enum PixelFormat *p;
#if LIBAVCODEC_VERSION_MAJOR < 55
int64_t mask = 0;
#endif
for(p = codec->pix_fmts; *p != -1; p++) {
// may get complaints about 1LL; thus the cast
#if LIBAVCODEC_VERSION_MAJOR < 55
mask |= ((int64_t)1) << *p;
#endif
if(*p == pixfmt)
break;
}
if(*p == -1) {
// if not supported, use a converter to the next best format
// this is swscale, the converter used by the output demo
#if LIBAVCODEC_VERSION_MAJOR < 55
enum PixelFormat dp = (PixelFormat)avcodec_find_best_pix_fmt(mask, pixfmt, 0, NULL);
#else
#if LIBAVCODEC_VERSION_MICRO >= 100
// FFmpeg
enum AVPixelFormat dp = avcodec_find_best_pix_fmt_of_list(codec->pix_fmts, pixfmt, 0, NULL);
#else
// Libav
enum AVPixelFormat dp = avcodec_find_best_pix_fmt2(codec->pix_fmts, pixfmt, 0, NULL);
#endif
#endif
if(dp == -1)
dp = codec->pix_fmts[0];
if(!(convpic = avcodec_alloc_frame()) ||
avpicture_alloc((AVPicture *)convpic, dp, w, h) < 0) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOMEM;
}
#if LIBSWSCALE_VERSION_INT < AV_VERSION_INT(0, 12, 0)
converter = sws_getContext(w, h, pixfmt, w, h, dp, SWS_BICUBIC,
NULL, NULL, NULL);
#else
converter = sws_alloc_context();
// what a convoluted, inefficient way to set options
av_opt_set_int(converter, "sws_flags", SWS_BICUBIC, 0);
av_opt_set_int(converter, "srcw", w, 0);
av_opt_set_int(converter, "srch", h, 0);
av_opt_set_int(converter, "dstw", w, 0);
av_opt_set_int(converter, "dsth", h, 0);
av_opt_set_int(converter, "src_format", pixfmt, 0);
av_opt_set_int(converter, "dst_format", dp, 0);
sws_init_context(converter, NULL, NULL);
#endif
ctx->pix_fmt = dp;
}
}
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(53,6,0)
if(!codec || avcodec_open(ctx, codec)) {
#else
if(!codec || avcodec_open2(ctx, codec, NULL)) {
#endif
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOCODEC;
}
return MRET_OK;
}
MediaRet MediaRecorder::finish_setup(const char *fname)
{
if(audio_buf)
free(audio_buf);
if(audio_buf2)
free(audio_buf2);
audio_buf2 = NULL;
in_audio_buf2 = 0;
if(aud_st) {
frame_len = aud_st->codec->frame_size * 4;
sample_len = soundGetSampleRate() * 4 / 60;
switch(aud_st->codec->codec_id) {
case CODEC_ID_PCM_S16LE:
case CODEC_ID_PCM_S16BE:
case CODEC_ID_PCM_U16LE:
case CODEC_ID_PCM_U16BE:
frame_len = sample_len;
}
audio_buf = (uint8_t *)malloc(AUDIO_BUF_LEN);
if(!audio_buf) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOMEM;
}
if(frame_len != sample_len && (frame_len > sample_len || sample_len % frame_len)) {
audio_buf2 = (uint16_t *)malloc(frame_len);
if(!audio_buf2) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOMEM;
}
}
} else
audio_buf = NULL;
if(video_buf)
free(video_buf);
if(vid_st) {
video_buf = (uint8_t *)malloc(VIDEO_BUF_LEN);
if(!video_buf) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_NOMEM;
}
} else {
video_buf = NULL;
}
if(!(oc->oformat->flags & AVFMT_NOFILE)) {
if(avio_open(&oc->pb, fname, AVIO_FLAG_WRITE) < 0) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_FERR;
}
}
avformat_write_header(oc, NULL);
return MRET_OK;
}
MediaRet MediaRecorder::Record(const char *fname, int width, int height, int depth)
{
if(oc)
return MRET_ERR_RECORDING;
aud_st = vid_st = NULL;
AVOutputFormat *fmt = av_guess_format(NULL, fname, NULL);
if(!fmt)
fmt = av_guess_format("avi", NULL, NULL);
if(!fmt || fmt->video_codec == CODEC_ID_NONE)
return MRET_ERR_FMTGUESS;
MediaRet ret;
if((ret = setup_sound_stream(fname, fmt)) == MRET_OK &&
(ret = setup_video_stream(fname, width, height, depth)) == MRET_OK)
ret = finish_setup(fname);
return ret;
}
MediaRet MediaRecorder::Record(const char *fname)
{
if(oc)
return MRET_ERR_RECORDING;
aud_st = vid_st = NULL;
AVOutputFormat *fmt = av_guess_format(NULL, fname, NULL);
if(!fmt)
fmt = av_guess_format("wav", NULL, NULL);
if(!fmt || fmt->audio_codec == CODEC_ID_NONE)
return MRET_ERR_FMTGUESS;
MediaRet ret;
if((ret = setup_sound_stream(fname, fmt)) == MRET_OK)
ret = finish_setup(fname);
return ret;
}
void MediaRecorder::Stop()
{
if(oc) {
if(in_audio_buf2)
AddFrame((uint16_t *)0);
av_write_trailer(oc);
avformat_free_context(oc);
oc = NULL;
}
if(audio_buf) {
free(audio_buf);
audio_buf = NULL;
}
if(video_buf) {
free(video_buf);
video_buf = NULL;
}
if(audio_buf2) {
free(audio_buf2);
audio_buf2 = NULL;
}
if(convpic) {
avpicture_free((AVPicture *)convpic);
av_free(convpic);
convpic = NULL;
}
if(converter) {
sws_freeContext(converter);
converter = NULL;
}
}
MediaRecorder::~MediaRecorder()
{
Stop();
}
// Still needs updating for avcodec_encode_video2
MediaRet MediaRecorder::AddFrame(const uint8_t *vid)
{
if(!oc || !vid_st)
return MRET_OK;
AVCodecContext *ctx = vid_st->codec;
AVPacket pkt;
#if LIBAVCODEC_VERSION_MAJOR > 56
int ret, got_packet = 0;
#endif
// strip borders. inconsistent between depths for some reason
// but fortunately consistent between gb/gba.
int tbord, rbord;
switch(pixsize) {
case 2:
// 16-bit: 2 @ right, 1 @ top
tbord = 1; rbord = 2; break;
case 3:
// 24-bit: no border
tbord = rbord = 0; break;
case 4:
// 32-bit: 1 @ right, 1 @ top
tbord = 1; rbord = 1; break;
}
avpicture_fill((AVPicture *)pic, (uint8_t *)vid + tbord * (linesize + pixsize * rbord),
(PixelFormat)pixfmt, ctx->width + rbord, ctx->height);
// satisfy stupid sws_scale()'s integrity check
pic->data[1] = pic->data[2] = pic->data[3] = pic->data[0];
pic->linesize[1] = pic->linesize[2] = pic->linesize[3] = pic->linesize[0];
AVFrame *f = pic;
if(converter) {
sws_scale(converter, pic->data, pic->linesize, 0, ctx->height,
convpic->data, convpic->linesize);
f = convpic;
}
av_init_packet(&pkt);
pkt.stream_index = vid_st->index;
if(oc->oformat->flags & AVFMT_RAWPICTURE) {
// this won't work due to border
// not sure what formats set this, anyway
pkt.flags |= AV_PKT_FLAG_KEY;
pkt.data = f->data[0];
pkt.size = linesize * ctx->height;
} else {
#if LIBAVCODEC_VERSION_MAJOR > 56
pkt.data = video_buf;
pkt.size = VIDEO_BUF_LEN;
f->format = ctx->pix_fmt;
f->width = ctx->width;
f->height = ctx->height;
ret = avcodec_encode_video2(ctx, &pkt, f, &got_packet);
if(!ret && got_packet && ctx->coded_frame) {
ctx->coded_frame->pts = pkt.pts;
ctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
}
#else
pkt.size = avcodec_encode_video(ctx, video_buf, VIDEO_BUF_LEN, f);
#endif
if(!pkt.size)
return MRET_OK;
if(ctx->coded_frame && ctx->coded_frame->pts != AV_NOPTS_VALUE)
pkt.pts = av_rescale_q(ctx->coded_frame->pts, ctx->time_base, vid_st->time_base);
if(pkt.size > VIDEO_BUF_LEN) {
avformat_free_context(oc);
oc = NULL;
return MRET_ERR_BUFSIZE;
}
if(ctx->coded_frame->key_frame)
pkt.flags |= AV_PKT_FLAG_KEY;
pkt.data = video_buf;
}
if(av_interleaved_write_frame(oc, &pkt) < 0) {
avformat_free_context(oc);
oc = NULL;
// yeah, err might not be a file error, but if it isn't, it's a
// coding error rather than a user-controllable error
// and better resolved using debugging
return MRET_ERR_FERR;
}
return MRET_OK;
}
#if LIBAVCODEC_VERSION_MAJOR > 56
/* FFmpeg depricated avcodec_encode_audio.
* It was removed completely in 3.0.
* This will at least get audio recording *working*
*/
static inline int MediaRecorderEncodeAudio(AVCodecContext *ctx,
AVPacket *pkt,
uint8_t *buf, int buf_size,
const short *samples)
{
AVFrame *frame;
av_init_packet(pkt);
int ret, samples_size, got_packet = 0;
pkt->data = buf;
pkt->size = buf_size;
if (samples) {
frame = frame = av_frame_alloc();
if (ctx->frame_size) {
frame->nb_samples = ctx->frame_size;
} else {
frame->nb_samples = (int64_t)buf_size * 8 /
(av_get_bits_per_sample(ctx->codec_id) *
ctx->channels);
}
frame->format = ctx->sample_fmt;
frame->channel_layout = ctx->channel_layout;
samples_size = av_samples_get_buffer_size(NULL, ctx->channels,
frame->nb_samples, ctx->sample_fmt, 1);
avcodec_fill_audio_frame(frame, ctx->channels, ctx->sample_fmt,
(const uint8_t *)samples, samples_size, 1);
//frame->pts = AV_NOPTS_VALUE;
} else {
frame = NULL;
}
ret = avcodec_encode_audio2(ctx, pkt, frame, &got_packet);
if (!ret && got_packet && ctx->coded_frame) {
ctx->coded_frame->pts = pkt->pts;
ctx->coded_frame->key_frame = !!(pkt->flags & AV_PKT_FLAG_KEY);
}
if (frame && frame->extended_data != frame->data)
av_freep(&frame->extended_data);
return ret;
}
int Logo::Load(const char* fileName)
{
AVFormatContext *fctx = NULL;
AVCodecContext *ctx = NULL;
AVCodec *codec = NULL;
AVFrame *logoRGB = NULL;
AVFrame* logo = NULL;
SwsContext *sws = NULL;
AVPacket packet;
int res = 0;
int gotLogo = 0;
int numpixels = 0;
int size = 0;
//Create context from file
if(avformat_open_input(&fctx, fileName, NULL, NULL)<0)
return Error("Couldn't open the logo image file [%s]\n",fileName);
//Check it's ok
if(avformat_find_stream_info(fctx,NULL)<0)
{
//Set error
res = Error("Couldn't find stream information for the logo image file...\n");
//Free resources
goto end;
}
//Get codec from file fromat
if (!(ctx = fctx->streams[0]->codec))
{
//Set errror
res = Error("Context codec not valid\n");
//Free resources
goto end;
}
//Get decoder for format
if (!(codec = avcodec_find_decoder(ctx->codec_id)))
{
//Set errror
res = Error("Couldn't find codec for the logo image file...\n");
//Free resources
goto end;
}
//Only one thread
ctx->thread_count = 1;
//Open codec
if (avcodec_open2(ctx, codec, NULL)<0)
{
//Set errror
res = Error("Couldn't open codec for the logo image file...\n");
//Free resources
goto end;
}
//Read logo frame
if (av_read_frame(fctx, &packet)<0)
{
//Set errror
res = Error("Couldn't read frame from the image file...\n");
//Free resources
goto end;
}
//Alloc frame
if (!(logoRGB = av_frame_alloc()))
{
//Set errror
res = Error("Couldn't alloc frame\n");
//Free resources
goto end;
}
//Use only one thread to avoid decoding on background and logo not displayed
ctx->thread_count = 1;
//Decode logo
if (avcodec_decode_video2(ctx, logoRGB, &gotLogo, &packet)<0)
{
//Set errror
res = Error("Couldn't decode logo\n");
//Free resources
av_free_packet(&packet);
goto end;
}
av_free_packet(&packet);
//If it we don't have a logo
if (!gotLogo)
{
//Set errror
res = Error("No logo on file\n");
//Free resources
goto end;
}
//Allocate new one
if (!(logo = av_frame_alloc()))
{
//Set errror
res = Error("Couldn't alloc frame\n");
//Free resources
goto end;
}
//Get frame sizes
width = ctx->width;
height = ctx->height;
// Create YUV rescaller cotext
if (!(sws = sws_alloc_context()))
{
//Set errror
res = Error("Couldn't alloc sws context\n");
// Exit
goto end;
}
// Set property's of YUV rescaller context
av_opt_set_defaults(sws);
av_opt_set_int(sws, "srcw", width ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(sws, "srch", height ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(sws, "src_format", ctx->pix_fmt ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(sws, "dstw", width ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(sws, "dsth", height ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(sws, "dst_format", AV_PIX_FMT_YUV420P ,AV_OPT_SEARCH_CHILDREN);
av_opt_set_int(sws, "sws_flags", SWS_FAST_BILINEAR ,AV_OPT_SEARCH_CHILDREN);
// Init YUV rescaller context
if (sws_init_context(sws, NULL, NULL) < 0)
{
//Set errror
res = Error("Couldn't init sws context\n");
// Exit
goto end;
}
//Check if we already had one
if (frame)
//Free memory
free(frame);
//Check if we already had one
if (frameRGBA)
//Free memory
free(frameRGBA);
//Get size with padding
size = (((width/32+1)*32)*((height/32+1)*32)*3)/2+FF_INPUT_BUFFER_PADDING_SIZE+32;
//And numer of pixels
numpixels = width*height;
//Allocate frame
frame = (BYTE*)malloc32(size); /* size for YUV 420 */
frameRGBA = (BYTE*)malloc32(numpixels*4);
//Alloc data
logo->data[0] = frame;
logo->data[1] = logo->data[0] + numpixels;
logo->data[2] = logo->data[1] + numpixels / 4;
//Set size for planes
logo->linesize[0] = width;
logo->linesize[1] = width/2;
logo->linesize[2] = width/2;
//Convert
sws_scale(sws, logoRGB->data, logoRGB->linesize, 0, height, logo->data, logo->linesize);
//Copy logo from rgbA to rgb
for (int j=0;j<height;j++)
for (int i=0;i<width;i++)
//Copy line by line
memcpy(frameRGBA+(width*j+i)*4,logoRGB->data[0]+logoRGB->linesize[0]*j+i*3,3);
//Everything was ok
res = 1;
end:
if (logo)
av_free(logo);
if (logoRGB)
av_free(logoRGB);
if (ctx)
avcodec_close(ctx);
if (sws)
sws_freeContext(sws);
if (fctx)
avformat_close_input(&fctx);
//Exit
return res;
}