diff options
Diffstat (limited to 'examples/simple_decoder.c')
| -rw-r--r-- | examples/simple_decoder.c | 148 |
1 files changed, 60 insertions, 88 deletions
diff --git a/examples/simple_decoder.c b/examples/simple_decoder.c index 17a598739..23399f44f 100644 --- a/examples/simple_decoder.c +++ b/examples/simple_decoder.c @@ -77,110 +77,82 @@ // few exeptions, vpx_codec functions return an enumerated error status, // with the value `0` indicating success. -#include <stdarg.h> #include <stdio.h> #include <stdlib.h> #include <string.h> + #define VPX_CODEC_DISABLE_COMPAT 1 -#include "./vpx_config.h" + #include "vpx/vp8dx.h" #include "vpx/vpx_decoder.h" -#define interface (vpx_codec_vp8_dx()) +#include "./ivfdec.h" +#include "./tools_common.h" +#include "./vpx_config.h" -#define IVF_FILE_HDR_SZ (32) -#define IVF_FRAME_HDR_SZ (12) +static const char *exec_name; -static unsigned int mem_get_le32(const unsigned char *mem) { - return (mem[3] << 24)|(mem[2] << 16)|(mem[1] << 8)|(mem[0]); +void usage_exit() { + fprintf(stderr, "Usage: %s <infile> <outfile>\n", exec_name); + exit(EXIT_FAILURE); } -static void die(const char *fmt, ...) { - va_list ap; +int main(int argc, char **argv) { + FILE *infile, *outfile; + vpx_codec_ctx_t codec; + vpx_codec_iface_t *iface; + int flags = 0, frame_cnt = 0; + vpx_video_t *video; - va_start(ap, fmt); - vprintf(fmt, ap); - if(fmt[strlen(fmt)-1] != '\n') - printf("\n"); - exit(EXIT_FAILURE); -} + exec_name = argv[0]; -static void die_codec(vpx_codec_ctx_t *ctx, const char *s) { - const char *detail = vpx_codec_error_detail(ctx); + if (argc != 3) + die("Invalid number of arguments"); - printf("%s: %s\n", s, vpx_codec_error(ctx)); - if(detail) - printf(" %s\n",detail); - exit(EXIT_FAILURE); -} + if (!(infile = fopen(argv[1], "rb"))) + die("Failed to open %s for reading", argv[1]); + if (!(outfile = fopen(argv[2], "wb"))) + die("Failed to open %s for writing", argv[2]); -int main(int argc, char **argv) { - FILE *infile, *outfile; - vpx_codec_ctx_t codec; - int flags = 0, frame_cnt = 0; - unsigned char file_hdr[IVF_FILE_HDR_SZ]; - unsigned char frame_hdr[IVF_FRAME_HDR_SZ]; - unsigned char frame[256*1024]; - vpx_codec_err_t res; - - (void)res; - /* Open files */ - if(argc!=3) - die("Usage: %s <infile> <outfile>\n", argv[0]); - if(!(infile = fopen(argv[1], "rb"))) - die("Failed to open %s for reading", argv[1]); - if(!(outfile = fopen(argv[2], "wb"))) - die("Failed to open %s for writing", argv[2]); - - /* Read file header */ - if(!(fread(file_hdr, 1, IVF_FILE_HDR_SZ, infile) == IVF_FILE_HDR_SZ - && file_hdr[0]=='D' && file_hdr[1]=='K' && file_hdr[2]=='I' - && file_hdr[3]=='F')) - die("%s is not an IVF file.", argv[1]); - - printf("Using %s\n",vpx_codec_iface_name(interface)); - /* Initialize codec */ - if(vpx_codec_dec_init(&codec, interface, NULL, flags)) - die_codec(&codec, "Failed to initialize decoder"); - - /* Read each frame */ - while(fread(frame_hdr, 1, IVF_FRAME_HDR_SZ, infile) == IVF_FRAME_HDR_SZ) { - int frame_sz = mem_get_le32(frame_hdr); - vpx_codec_iter_t iter = NULL; - vpx_image_t *img; - - - frame_cnt++; - if(frame_sz > sizeof(frame)) - die("Frame %d data too big for example code buffer", frame_sz); - if(fread(frame, 1, frame_sz, infile) != frame_sz) - die("Frame %d failed to read complete frame", frame_cnt); - - /* Decode the frame */ - if(vpx_codec_decode(&codec, frame, frame_sz, NULL, 0)) - die_codec(&codec, "Failed to decode frame"); - - /* Write decoded data to disk */ - while((img = vpx_codec_get_frame(&codec, &iter))) { - unsigned int plane, y; - - for(plane=0; plane < 3; plane++) { - unsigned char *buf =img->planes[plane]; - - for(y=0; y < (plane ? (img->d_h + 1) >> 1 : img->d_h); y++) { - (void) fwrite(buf, 1, (plane ? (img->d_w + 1) >> 1 : img->d_w), - outfile); - buf += img->stride[plane]; - } - } - } + video = vpx_video_open_file(infile); + if (!video) + die("%s is not an IVF file.", argv[1]); + + iface = get_codec_interface(vpx_video_get_fourcc(video)); + if (!iface) + die("Unknown FOURCC code."); + + printf("Using %s\n", vpx_codec_iface_name(iface)); + + if (vpx_codec_dec_init(&codec, iface, NULL, flags)) + die_codec(&codec, "Failed to initialize decoder"); + + while (vpx_video_read_frame(video)) { + vpx_codec_iter_t iter = NULL; + vpx_image_t *img = NULL; + size_t frame_size = 0; + const unsigned char *frame = vpx_video_get_frame(video, &frame_size); + if (vpx_codec_decode(&codec, frame, frame_size, NULL, 0)) + die_codec(&codec, "Failed to decode frame"); + + while ((img = vpx_codec_get_frame(&codec, &iter)) != NULL) { + vpx_img_write(img, outfile); + ++frame_cnt; } - printf("Processed %d frames.\n",frame_cnt); - if(vpx_codec_destroy(&codec)) - die_codec(&codec, "Failed to destroy codec"); + } + + printf("Processed %d frames.\n", frame_cnt); + if (vpx_codec_destroy(&codec)) + die_codec(&codec, "Failed to destroy codec"); + + printf("Play: ffplay -f rawvideo -pix_fmt yuv420p -s %dx%d %s\n", + vpx_video_get_width(video), vpx_video_get_height(video), argv[2]); + + vpx_video_close(video); + + fclose(outfile); + fclose(infile); - fclose(outfile); - fclose(infile); - return EXIT_SUCCESS; + return EXIT_SUCCESS; } |